Commission Regulation (EU) 2025/258 of 7 February 2025 amending Regulation (EU) 2017/2400 as regards the determination of the CO2 emissions and fuel consumption of medium and heavy lorries and heavy buses and the inclusion of vehicles running on hydrogen and other new technologies and amending Regulation (EU) No 582/2011 as regards the applicable rules on the determination of CO2 emissions and fuel consumption in order to obtain an extension to an EU type-approval

Official Journal EN of the European Union L series 2025/258 20.2.2025 COMMISSION REGULATION (EU) 2025/258 of 7 February 2025 amending Regulation (EU) 2017/2400 as regards the determination of the CO emissions and fuel 2 consumption of medium and heavy lorries and heavy buses and the inclusion of vehicles running on hydrogen and other new technologies and amending Regulation (EU) No 582/2011 as regards the applicable rules on the determination of CO emissions and fuel consumption in order to obtain an 2 extension to an EU type-approval (Text with EEA relevance) THE EUROPEAN COMMISSION, Having regard to the Treaty on the Functioning of the European Union, Having regard to Regulation (EC) No 595/2009 of the European Parliament and of the Council of 18 June 2009on type- approval of motor vehicles and engines with respect to emissions from heavy duty vehicles (Euro VI) and on access to vehicle repair and maintenance information and amending Regulation (EC) No 715/2007 and Directive 2007/46/EC and repealing Directives 80/1269/EEC, 2005/55/EC and 2005/78/EC(1), and in particular Article 4(3) and Article 5(4), point (e), thereof, Whereas: (1) Commission Regulation (EU) 2017/2400(2)introduced a common method to compare the performance of heavy- duty vehicles placed on the Union market as regards their CO emissions and fuel consumption. It lays down 2 provisions for the certification of components with an impact on CO emissions and fuel consumption of heavy- 2 duty vehicles, introduces a simulation tool for the purpose of determining and declaring CO emissions and fuel 2 consumption of those vehicles, and lays down, inter alia, requirements for Member States’ authorities and manufacturers to verify the conformity of the certification of the components and the conformity of the simulation tool operation. (2) Commission Regulation (EU) 2022/1379(3)expanded the scope of Regulation (EU) 2017/2400 to medium lorries and heavy buses and added new technologies such as hybrid and pure electric vehicles, dual-fuel vehicles and waste heat recovery. (3) As other new technologies are being developed and may enter the market in the future, requirements for such new technologies should be laid down. Such new technologies should include vehicles running on hydrogen, efficient wheel ends, vehicles propelled by several drivetrains operating independently or vehicles capable of recharging while in motion. (4) As it may be unclear at the time of certification of the CO emissions and fuel consumption values whether a vehicle 2 will be a vocational vehicle or not, all simulations for vehicles in the concerned groups should be simulated on all mission profiles. The correct allocation of the certified CO emissions and fuel consumption values should thus be 2 made depending on the status of the registration of the vehicle. (5) As equipping vehicles with efficient wheel ends makes a positive impact on CO emissions, a new procedure is 2 introduced to allow for the certification of efficient wheel ends in order to ensure that their high efficiency is reflected in the determination CO and fuel consumption values. 2 (1) OJ L 188, 18.7.2009, p. 1, ELI: http://data.europa.eu/eli/reg/2009/595/oj. (2) Commission Regulation (EU) 2017/2400 of 12 December 2017 implementing Regulation (EC) No 595/2009 of the European Parliament and of the Council as regards the determination of the CO emissions and fuel consumption of heavy-duty vehicles and 2 amending Directive 2007/46/EC of the European Parliament and of the Council and Commission Regulation (EU) No 582/2011 (OJ L 349, 29.12.2017, p. 1, ELI: http://data.europa.eu/eli/reg/2017/2400/oj). (3) Commission Regulation (EU) 2022/1379 of 5 July 2022 amending Regulation (EU) 2017/2400 as regards the determination of the CO emissions and fuel consumption of medium and heavy lorries and heavy buses and to introduce electric vehicles and other new 2 technologies (OJ L 212, 12.8.2022, p. 1, ELI: http://data.europa.eu/eli/reg/2022/1379/oj). ELI: http://data.europa.eu/eli/reg/2025/258/oj 1/105EN OJ L, 20.2.2025 (6) The procedure for determining the air drag performances of vehicles should be reinforced in order to improve its repeatability and reproducibility and, in order to reduce the testing burden and to ensure that features improving aerodynamic performances can be effectively certified it should be complemented with a new process relying on computational fluid dynamics simulation. (7) As the on-road verification testing procedure proved to be an important tool for the verification of calculations of CO emissions and fuel consumption of medium and heavy lorries, it should also apply to heavy buses, with certain 2 adjustments to reflect the complexity of the frequent multi-step production of such vehicles. (8) As new technologies will be covered by this Regulation, notably for medium lorries, conflicting obligations between Regulation (EU) 2017/2400 and the Worldwide Harmonised Light-duty Vehicles Test Procedures for the purpose of determining CO emissions and fuel consumption values as prescribed in Commission Regulation (EU) 2 No 582/2011(4)should be avoided. Regulation (EU) No 582/2011 should be amended accordingly to ensure that no medium lorries are tested under two different regimes for the purpose of determining CO emissions and fuel 2 consumption values. (9) In order to provide Member States, national authorities and economic operators with sufficient time to prepare for the application of the rules introduced by this Regulation, its date of application should be deferred. (10) In order to allow for an early application of the Regulation, in particular for technologies newly covered by this amendment, it should be possible to obtain a licence to operate the simulation tool and to receive a certification for components in accordance with Regulation (EU) 2017/2400 as amended by this Regulation as of the entry into force. (11) The measures provided for in this Regulation are in accordance with the opinion of the Technical Committee – Motor Vehicles, HAS ADOPTED THIS REGULATION: Article 1 Regulation (EU) 2017/2400 is amended as follows: (1) Article 12 is amended as follows: (a) in paragraph 1, the following point (k) is added: ‘(k) wheel ends.’; (b) paragraph 2 is replaced by the following: ‘2. The CO emissions and fuel consumption related properties of the components, separate technical units 2 and systems referred to in points (b) to (g), (i), (j) and (k) of paragraph 1 of this Article shall be based either on the values determined, for each component, separate technical unit, system or if applicable their respective family, in accordance with Article 14 and certified in accordance with Article 17 (‘certified values’) or, in the absence of the certified values, on the standard values determined in accordance with Article 13.’; (2) Article 13 is amended as follows: (a) paragraph 6 is replaced by the following: ‘6. The standard values for air drag shall be determined in accordance with Appendix 7 of Annex VIII.’; (4) Commission Regulation (EU) No 582/2011 of 25 May 2011 implementing and amending Regulation (EC) No 595/2009 of the European Parliament and of the Council with respect to emissions from heavy duty vehicles (Euro VI) and amending Annexes I and III to Directive 2007/46/EC of the European Parliament and of the Council (OJ L 167, 25.6.2011, p. 1, ELI: http://data.europa.eu/eli/reg/ 2011/582/oj). 2/105 ELI: http://data.europa.eu/eli/reg/2025/258/ojEN OJ L, 20.2.2025 (b) paragraph 9 is replaced by the following: ‘9. The standard values for electric powertrain components shall be determined in accordance with Appendices 8, 9, 10 and 11 to Annex Xb.’; (c) paragraph 10 is added: ‘10. The standard values for wheel ends shall be determined in accordance with point 6 of Annex VIIa.’; (3) Article 14 is amended as follows: (a) paragraph 1 is replaced by the following: ‘1. The values determined in accordance with paragraphs 2 to 11 of this Article may be used by the vehicle manufacturer as the simulation tool input data if they are certified in accordance with Article 17.’; (b) paragraph 8 is replaced by the following: ‘8. The certified values for air drag shall be determined in accordance with point 3 of Annex VIII.’; (c) paragraph 11 is added: ‘11. The certified values for wheel ends shall be determined in accordance with Annex VIIa.’; (4) in Article 15, paragraph 1, the following indent is added: ‘— Annex VIIa as regards the family concept of wheel ends.’; (5) in Article 16, paragraph 2, the following indent is added: ‘— Appendix 2 to Annex VIIa as regards wheel ends.’; (6) in Article 17, paragraph 2, the following indent is added: ‘— Appendix 1 to Annex VIIa as regards wheel ends.’; (7) in Article 18, paragraph 1, the following indent is added to the first subparagraph: ‘— Annex VIIa as regards the family concept of wheel ends.’; (8) in Article 22, point 1, the second paragraph is amended as follows: (a) the fourth indent is replaced by the following: ‘— the procedures laid down in Appendix 6 to Annex VIII as regards air drag;’; (b) the following indent is added: ‘— the procedures laid down in point 5 of Annex VIIa as regards wheel ends.’; (9) Article 24 is replaced by the following: ‘Article 24 Application of the requirements Without prejudice to Article 10(3) of this Regulation, where the obligations referred to in Article 9 of this Regulation have not been complied with, Member States shall consider certificates of conformity for type approved vehicles to be no longer valid for the purposes of Article 48 of Regulation (EU) 2018/858, and, for type approved vehicles and individually approved vehicles, shall prohibit the registration, sale or entry into service of vehicles in groups 1s, 1, 2, 3, 4, 5, 9, 10, 11, 12, 16, 31 to 40, 53 and 54.’; (10) Annex I is amended as set out in Annex I to this Regulation; (11) Annex III is amended as set out in Annex II to this Regulation; (12) Annex IV is amended as set out in Annex III to this Regulation; (13) Annex V is amended as set out in Annex IV to this Regulation; ELI: http://data.europa.eu/eli/reg/2025/258/oj 3/105EN OJ L, 20.2.2025 (14) Annex VI is amended as set out in Annex V to this Regulation; (15) the text in Annex VI to this Regulation is inserted as Annex VIIa; (16) Annex VIII is amended as set out in Annex VII to this Regulation; (17) Annex IX is amended as set out in Annex VIII to this Regulation; (18) Annex Xa is amended as set out in Annex IX to this Regulation; (19) Annex Xb is amended as set out in Annex X to this Regulation. Article 2 Article 3 of Regulation (EU) No 582/2011 is amended as follows: (1) in paragraph 1, second subparagraph, the second sentence is deleted; (2) paragraph 3 is replaced by the following: ‘3. In order to receive an extension of the EU type-approval of a vehicle with regard to emissions type-approved under this Regulation with a reference mass exceeding 2 380kg but not exceeding 2 610kg, the manufacturer shall meet the requirements set out in Section 5 of Annex VIII unless CO emissions and fuel consumption values for such 2 vehicles are determined in accordance with Regulation (EU) 2017/2400.’. Article 3 This Regulation shall enter into force on the twentieth day following that of its publication in the Official Journal of the European Union. This Regulation shall apply from 1 January 2026. Point (21) of Annex X shall apply as from 1 March 2025. Notwithstanding the second and the third paragraphs, from 12 March 2025, approval authorities shall not refuse to grant certification of CO emissions and fuel consumption related properties of the components in accordance with Regulation 2 (EU) 2017/2400, as amended by this Regulation. From 12 March 2025 Member States shall not prohibit registration, placing on the market and entry into service of a new vehicle, where the vehicle concerned complies with Regulation (EU) 2017/2400 and Regulation (EU) No 582/2011, as amended by this Regulation, if a manufacturer so requests. This Regulation shall be binding in its entirety and directly applicable in all Member States. Done at Brussels, 7 February 2025. For the Commission The President Ursula VON DER LEYEN 4/105 ELI: http://data.europa.eu/eli/reg/2025/258/ojANNEX I Annex I to Regulation (EU) 2017/2400 is amended as follows: (1) in point 1.1, Table 1 is replaced by the following: ‘Table 1 Vehicle groups for heavy lorries Description of elements relevant to the classification in vehicle groups puorg elciheV Allocation of mission profile and vehicle configuration noitarugifnoc elxA noitarugifnoc sissahC elbissimrep yllacinhceT )snot( ssam nedal mumixam luah gnoL )*(SME luah gnoL yreviled lanoigeR )*(SME yreviled lanoigeR yreviled nabrU ytilitu lapicinuM >/>noitcurtsnoC EN OJ L, 20.2.2025 4 × 2 Rigid lorry (or > 7,4 –7,5 1s R R tractor)(**) Rigid lorry (or > 7,5 – 10 1 R R tractor)(**) Rigid lorry (or > 10 – 12 2 R+T1 R R tractor)(**) Rigid lorry (or > 12 – 16 3 R R tractor)(**) Rigid lorry > 16 4 R+T2 R R R R Tractor > 16 5 T+ST T+ST T+ST T+ST T T+ST +T2 +T2 +ST 4 ×4 Rigid lorry > 7,5 – 16 (6) Rigid lorry > 16 (7) Tractor > 16 (8) 6 ×2 Rigid lorry all weights 9 R+T2 R+D+ST R R+D+ST R R Tractor all weights 10 T+ST T+ST T+ST T+ST T+ST +T2 +T2 6 ×4 Rigid lorry all weights 11 R+T2 R+D+ST R R+D+ST R R Tractor all weights 12 T+ST T+ST T+ST T+ST T+ST +T2 +T2 6 × 6 Rigid lorry all weights (13) Tractor all weights (14) 8 × 2 Rigid lorry all weights (15) 8 × 4 Rigid lorry all weights 16 R+T2 R+D+ST R R+D+ST R 8 ×6 Rigid lorry all weights (17) 8 × 8 8 ×2 Tractor all weights (18) 8 ×4 8 ×6 8 ×8 ELI: http://data.europa.eu/eli/reg/2025/258/oj 5/105Description of elements relevant to the classification in vehicle groups puorg elciheV Allocation of mission profile and vehicle configuration noitarugifnoc elxA noitarugifnoc sissahC elbissimrep yllacinhceT )snot( ssam nedal mumixam luah gnoL )*(SME luah gnoL yreviled lanoigeR )*(SME yreviled lanoigeR yreviled nabrU ytilitu lapicinuM >/>noitcurtsnoC EN OJ L, 20.2.2025 5 axles, all Rigid lorry or all weights (19) configura- tractor tions (*) EMS - European Modular System (**) In these vehicle classes tractors are treated as rigid lorries but with specific curb weight of tractor T= Tractor R= Rigid lorry & standard body T1, T2= standard trailers ST= standard semitrailer D= standard dolly’; (2) point 2.3 is amended as follows: (a) the following text is added: ‘If a heavy bus is approved as a complete vehicle, only the mission profiles for the primary vehicle group related to the group of the complete vehicle as set out in Table 7 may be simulated. If the complete vehicle group changes in a subsequent manufacturing step, the primary vehicle manufacturer shall make the VIF with the set 1 of 22 results available to the manufacturer responsible for the subsequent manufacturing step.’; (b) the following table is added: ‘Table 7 Primary Vehicle Groups to be simulated in case of complete heavy buses Complete Vehicle Group Primary Vehicle Group to be calculated 31a, 31b1, 31b2, 31d P31 SD 31c, 31e P31 DD 32a, 32b, 32c, 32d P32 SD 32e, 32f P32 DD 33a, 33b1, 33b2, 33d P33 SD 33c, 33e P33 DD 34a, 34b, 34c, 34d P34 SD 34e, 34f P34 DD 35a, 35b1, 35b2 P35 SD 35c P35 DD 36a, 36b, 36c, 36d P36 SD 36e, 36f P36 DD 37a, 37b1, 37b2, 37d P37 SD 6/105 ELI: http://data.europa.eu/eli/reg/2025/258/ojEN OJ L, 20.2.2025 Complete Vehicle Group Primary Vehicle Group to be calculated 37c, 37e P37 DD 38a, 38b, 38c, 38d P38 SD 38e, 38f P38 DD 39a, 39b1, 39b2 P39 SD 39c P39 DD 40a, 40b, 40c, 40d P40 SD 40e, 40f P40 DD’ ELI: http://data.europa.eu/eli/reg/2025/258/oj 7/105EN OJ L, 20.2.2025 ANNEX II Annex III to Regulation (EU) 2017/2400 is amended as follows: (1) in point 2, the following points are added: ‘(38) ‘dynamic charging technology’ means a technology that enables the vehicle to be connected to an external electrical power supply while in motion, providing direct power to the vehicle’s propulsion and/or auxiliary systems and/or charging the batteries; (39) ‘overhead pantograph’ means dynamic charging technology for connection and power supply with overhead contact line infrastructure on roads; (40) ‘overhead trolley’ means dynamic charging technology with current collector poles for connection with overhead contact line infrastructure; (41) ‘ground rail’ means dynamic charging technology that conductively transfers the electrical energy to the vehicle through rails embedded in or on top of the road surface; (42) ‘wireless’ means dynamic charging technology that inductively transfers the electrical energy to the vehicle through devices embedded in or on top of the road surface providing magnetic fields; (43) ‘compressed gaseous hydrogen’ means a hydrogen storage technology which stores hydrogen in gaseous form; (44) ‘liquid hydrogen’ means a hydrogen storage technology which stores hydrogen in liquid form; (45) ‘cryo-compressed hydrogen’ means a hydrogen storage technology which stores hydrogen at temperatures from close to liquefication up to ambient temperature and at a pressure of at least 200 bar. The hydrogen storage technology may be capable of operating at ambient temperature but its nominal capacity may only be reached close to the liquefaction temperature of hydrogen; (46) ‘empty hydrogen tank condition’ means the condition of a hydrogen tank from which it is still possible to reach a full tank in a single refuelling event without venting and which meets any of the following conditions: (a) below which an indication to the driver ‘empty’ or ‘almost empty’ or similar appears; (b) below which a significantly limited performance is provided by the hydrogen energy conversion system; (47) ‘off-vehicle charging hybrid vehicle’ or ‘OVC-HV’ means a hybrid vehicle that can be charged from an external source; (48) ‘off-vehicle charging fuel cell hybrid vehicle’ or ‘OVC-FCHV’ means a fuel cell hybrid vehicle that can be charged from an external source; (49) ‘driver-selectable mode’ means a distinct driver-selectable condition which could affect emissions, or fuel and/or energy consumption; (50) ‘predominant mode’ means a single driver-selectable mode that is always selected when the vehicle is switched on, regardless of the driver-selectable mode in operation when the vehicle was previously shut down, which meets the following conditions: (a) it cannot be redefined to another mode; (b) it can only be switched to another driver-selectable mode by an intentional action of the driver after the vehicle is switched on; (51) ‘battery-only predominant mode’ means a predominant mode where an OVC-HV is operating with the propulsion energy being provided exclusively by the REESS.’; 8/105 ELI: http://data.europa.eu/eli/reg/2025/258/ojEN OJ L, 20.2.2025 (2) in point 3, first paragraph, the first sentence is replaced by the following: ‘In Tables 1 to 17 the sets of input parameters to be provided regarding the characteristics of the vehicle are specified.’; (3) Table 1 is amended as follows: (a) in row ‘IdlingSpeed’, in column ‘Description/Reference’ the second sentence is replaced by the following: ‘For PEV and FCHV no input is required’; (b) in row ‘RetarderType’, in column ‘Description/Reference’ the text is replaced by the following: ‘Allowed values: ‘None’, ‘Losses included in Gearbox’, ‘Engine Retarder’, ‘Transmission Input Retarder’, ‘Transmission Output Retarder’, ‘Axlegear Input Retarder’ ‘Axlegear Input Retarder’ is applicable only for powertrain architectures ‘E3’, ‘S3’, ‘F3, ‘S-IEPC’, ‘F-IEPC’ and ‘E-IEPC’. Separate entry for each individual powertrain in the case of multiple mechanically independent powertrains in accordance with point 10.1.4.’; (c) in rows ‘RetarderRatio’ and ‘AngledriveType’, in column ‘Description/Reference’, the following text is added: ‘Separate entry for each individual powertrain in the case of multiple mechanically independent powertrains in accordance with point 10.1.4.’; (d) in row ‘PTOShafts GearWheels’, in column ‘Description/Reference’, the following text is added: ‘Separate entry for each individual powertrain in the case of multiple mechanically independent powertrains in accordance with point 10.1.4. In case of IEPS and IHPC, no input shall be made.’; (e) in row ‘PTOOther Elements’, in column ‘Description/Reference’, the following text is added: ‘Separate entry for each individual powertrain in the case of multiple mechanically independent powertrains in accordance with point 10.1.4.’; (f) in row ‘CertificationNumberEngine’, in columns ‘Parameter name’, ‘Parameter ID’, ‘Type’ and ‘Unit’, the four cells are merged together and the text of the four cells is replaced by the following: ‘Engine input data in accordance with Appendix 7 of Annex V’; (g) in row ‘CertificationNumberGearbox’, in columns ‘Parameter name’, ‘Parameter ID’, ‘Type’ and ‘Unit’, the four cells are merged together and the text in the four cells is replaced by the following: ‘Transmission input data in accordance with Table 1 to Table 3 in Appendix 12 of Annex VI’; (h) in row ‘CertificationNumberGearbox’, in column ‘Description/Reference’ the text is replaced by the following: ‘Only applicable if the component is present in the vehicle. Separate entry for each individual powertrain in the case of multiple mechanically independent powertrains in accordance with point 10.1.4’; (i) in row ‘CertificationNumberTorqueconverter’, in columns ‘Parameter name’, ‘Parameter ID’, ‘Type’ and ‘Unit’, the four cells are merged together and the text of the four cells is replaced by the following: ‘Torque converter input data in accordance with Table 4 and Table 5 in Appendix 12 of Annex VI’; ELI: http://data.europa.eu/eli/reg/2025/258/oj 9/105EN OJ L, 20.2.2025 (j) in row ‘CertificationNumberTorqueconverter’, in column ‘Description/Reference’ the text is replaced by the following: ‘Only applicable if the component is present in the vehicle. Separate entry for each individual powertrain in the case of multiple mechanically independent powertrains in accordance with point 10.1.4’; (k) in row ‘CertificationNumberAxlegear’, in columns ‘Parameter name’, ‘Parameter ID’, ‘Type’ and ‘Unit’, the four cells are merged together and the text of the four cells is replaced by the following: ‘Axle input data in accordance with Table 1 and Table 2 in Appendix 6 of Annex VII’; (l) in row ‘CertificationNumberAxlegear’, in column ‘Description/Reference’ the text is replaced by the following: ‘Only applicable if the component is present in the vehicle. Separate entry for each individual powertrain in the case of multiple mechanically independent powertrains in accordance with point 10.1.4’; (m) in row ‘CertificationNumberAngledrive’, in columns ‘Parameter name’, ‘Parameter ID’, ‘Type’ and ‘Unit’, the four cells are merged together and the text of the four cells is replaced by the following: ‘Angle drive input data in accordance with Table 6 and Table 7 in Appendix 12 of Annex VI’; (n) in row ‘CertificationNumberAngledrive’, in column ‘Description/Reference’ the text is replaced by the following: ‘Refers to certified ADC component installed in the angle drive position. Only applicable if the component is present in the vehicle. Separate entry for each individual powertrain in the case of multiple mechanically independent powertrains in accordance with point 10.1.4.’; (o) in row ‘CertificationNumberRetarder’, in columns ‘Parameter name’, ‘Parameter ID’, ‘Type’ and ‘Unit’, the four cells are merged together and the text of the four cells is replaced by the following: ‘Retarder input data in accordance with Table 8 and Table 9 in Appendix 12 of Annex VI’; (p) in row ‘CertificationNumberRetarder’, in column ‘Description/Reference’ the text is replaced by the following: ‘Only applicable if the component is present in the vehicle and the retarder losses are not provided together with the input data for the transmission component. Separate entry for each individual powertrain in the case of multiple mechanically independent powertrains in accordance with point 10.1.4.’; (q) in row ‘Certification NumberAirdrag’, in columns ‘Parameter name’, ‘Parameter ID’, ‘Type’ and ‘Unit’, the four cells are merged together and the text of the four cells is replaced by the following: ‘Air drag input data in accordance with Table 1 in Appendix 9 of Annex VIII’; (r) in row ‘Certification NumberIEPC’, in columns ‘Parameter name’, ‘Parameter ID’, ‘Type’ and ‘Unit’, the four cells are merged together and the text of the four cells is replaced by the following: ‘IEPC input data in accordance with Appendix 15 of Annex Xb’; (s) in row ‘Certification NumberIEPC’, in column ‘Description/Reference’ the text is replaced by the following: ‘Only applicable if the component is present in the vehicle. Separate entry for each individual powertrain in the case of multiple mechanically independent powertrains in accordance with point 10.1.4’; 10/105 ELI: http://data.europa.eu/eli/reg/2025/258/ojEN OJ L, 20.2.2025 (t) in the row ‘BodyworkCode’, in the column ‘Description/Reference’, the text is replaced by the following: ‘Allowed values: ‘CA’, ‘CB’, ‘CC’, ‘CD’, ‘CE’, ‘CF’, ‘CG’, ‘CH’, ‘CI’, ‘CJ’ in accordance with point 3 of part C of Annex I to Regulation (EU) 2018/858. In the case of bus chassis with vehicle code CX, no input shall be delivered.’; (u) in the row ‘LowEntry’, in the column ‘Description/Reference’, the text is replaced by the following: ‘‘low entry’ in accordance with point 1.2.3. of Annex I’; (v) the following rows are added: ‘H2StorageU- P545 double, 1 [kg] In accordance with point 12. X X X X sableCapacity Only relevant for vehicles with a fuel storage system containing hydrogen. For heavy buses, the input shall only be provided by the manufacturer responsible for the fuel storage system or if changes have been made to an existing fuel storage system. Hydrogen- P546 string [-] Allowed values: X X X X StorageTech- ‘Compressed’, ‘Liquid’, ‘Cryo- nology compressed’ Only relevant for vehicles with a fuel storage system containing hydrogen. For heavy buses, the input shall only be provided by the manufacturer responsible for the fuel storage system or if changes have been made to an existing fuel storage system. Simulation- P547 token [-] Licence number related to the X X X X’ ToolLicence- operation of the simulation Number tool in accordance with Article 7. (4) Table 2 is amended as follows: (a) the following row is inserted before the row ‘Twin Tyres’: ‘AxleNumber P548 integer [-] Position of the wheel axle on X X X’ the vehicle, counting from the front to the rear starting with 1 ELI: http://data.europa.eu/eli/reg/2025/258/oj 11/105EN OJ L, 20.2.2025 (b) the row ‘Certification NumberTyre’ is replaced by the following: ‘Tyre input data in accordance with X X X’ Appendix 3 of Annex X (c) the following rows are added: ‘Wheel End P549 double, 1 [Nm] Declared wheel end friction X X Friction value Determined in accordance with point 3.6 in Annex VIIa. The wheel ends installed in the vehicle shall have the same or lower friction values. In the case of standard values no input shall be provided. Input only relevant for non- driven axles. Certification P550 token [-] Certification number(s) of X X’ number wheel the certificate(s) for the end declared wheel end friction referred to by the input on wheel end friction (P549) Input only relevant for axles where an input on wheel end friction is actually provided. Multiple entries possible. (5) Table 3 is amended as follows: (a) in row ‘EngineCoolingFan/Technology’, in column ‘Description/Reference’ the text is replaced by the following: ‘Allowed values: ‘Crankshaft mounted - Electronically controlled visco clutch’, ‘Crankshaft mounted - Bimetallic controlled visco clutch’, ‘Crankshaft mounted - Discrete step clutch’, ‘Crankshaft mounted - On/off clutch’, ‘Belt driven or driven via transm. - Electronically controlled visco clutch’, ‘Belt driven or driven via transm. - Bimetallic controlled visco clutch’, ‘Belt driven or driven via transm. - Discrete step clutch’, ‘Belt driven or driven via transm. - On/off clutch’, ‘Hydraulic driven - Variable displacement pump’, ‘Hydraulic driven - Constant displacement pump’, ‘Electrically driven - Electronically controlled’’; (b) in row ‘SteeringPump/Technology’, in column ‘Description/Reference’ the text is replaced by the following: ‘Allowed values: ‘Fixed displacement’, ‘Fixed displacement with elec. control’, ‘Dual displacement’, ‘Dual displacement with elec. control’, ‘Variable displacement mech. controlled’, ‘Variable displacement elec. controlled’, ‘Electric driven pump’, ‘Full electric steering gear’ For PEV, FCHV or HEV with a powertrain configuration ‘S’ or ‘S-IEPC’ in accordance with point 10.1.1 ‘Electric driven pump’ or ‘Full electric steering gear’ are the only allowed values. Separate entry for each active steered wheel axle required in combination with axle position counting from the front to the rear starting with 1.’; 12/105 ELI: http://data.europa.eu/eli/reg/2025/258/ojEN OJ L, 20.2.2025 (c) in row ‘PneumaticSystem/Technology’, in column ‘Description/Reference’ the text is replaced by the following: ‘Allowed values: ‘Small’, ‘Small + ESS’, ‘Small + visco clutch’, ‘Small + mech. clutch’, ‘Small + ESS + AMS’, ‘Small + visco clutch + AMS’, ‘Small + mech. clutch + AMS’, ‘Medium Supply 1-stage’, ‘Medium Supply 1-stage + ESS’, ‘Medium Supply 1-stage + visco clutch’, ‘Medium Supply 1-stage + mech. clutch’, ‘Medium Supply 1-stage + ESS + AMS’, ‘Medium Supply 1-stage + visco clutch + AMS’, ‘Medium Supply 1-stage + mech. clutch + AMS’, ‘Medium Supply 2-stage’, ‘Medium Supply 2-stage + ESS’, ‘Medium Supply 2-stage + visco clutch’, ‘Medium Supply 2-stage + mech. clutch’, ‘Medium Supply 2-stage + ESS + AMS’, ‘Medium Supply 2-stage + visco clutch + AMS’, ‘Medium Supply 2-stage + mech. clutch + AMS’, ‘Large Supply’, ‘Large Supply + ESS’, ‘Large Supply + visco clutch’, ‘Large Supply + mech. clutch’, ‘Large Supply + ESS + AMS’, ‘Large Supply + visco clutch + AMS’, ‘Large Supply + mech. clutch + AMS’, ‘Vacuum pump’, ‘Small + elec. driven’, ‘Small + ESS AMS + elec. driven’, ‘Medium Supply 1-stage + elec. driven’, ‘Medium Supply 1-stage + AMS + elec. driven’, ‘Medium Supply 2-stage + elec. driven’, ‘Medium Supply 2-stage + AMS + elec. driven’, ‘Large Supply + elec. driven’, ‘Large Supply + AMS + elec. driven’, ‘Vacuum pump + elec. driven’; For PEV or FCHV only ‘elec. driven’ technologies are allowed values.’; (6) Table 3a is amended as follows: (a) in row ‘EngineCoolingFan/Technology’, in column ‘Description/Reference’ the text is replaced by the following: ‘Allowed values: ‘Crankshaft mounted - Electronically controlled visco clutch’, ‘Crankshaft mounted - Bimetallic controlled visco clutch’, ‘Crankshaft mounted - Discrete step clutch 2 stages’, ‘Crankshaft mounted - Discrete step clutch 3 stages’, ‘Crankshaft mounted - On/off clutch’, ‘Belt driven or driven via transm. - Electronically controlled visco clutch’, ‘Belt driven or driven via transm. - Bimetallic controlled visco clutch’, ‘Belt driven or driven via transm. - Discrete step clutch 2 stages’, ‘Belt driven or driven via transm. - Discrete step clutch 3 stages’, ‘Belt driven or driven via transm. - On/off clutch’, ‘Hydraulic driven - Variable displacement pump’, ‘Hydraulic driven - Constant displacement pump’, ‘Electrically driven - Electronically controlled’’; (b) in row ‘SteeringPump/Technology’, in column ‘Description/Reference’ the text is replaced by the following: ‘Allowed values: ‘Fixed displacement’, ‘Fixed displacement with elec. control’, ‘Dual displacement’, ‘Dual displacement with elec. control’, ‘Variable displacement mech. controlled’, ‘Variable displacement elec. controlled’, ‘Electric driven pump’, ‘Full electric steering gear’ For PEV, FCHV or HEV with a powertrain configuration ‘S’ or ‘S-IEPC’ in accordance with point 10.1.1 only ‘Electric driven pump’ or ‘Full electric steering gear’ are allowed values Separate entry for each active steered wheel axle required in combination with axle position counting from the front to the rear starting with 1.’; (c) in row ‘ElectricSystem/AlternatorTechnology’, in column ‘Description/Reference’ the following text is added: ‘For PEV or FCHV no input is required.’; (d) in row ‘ElectricSystem/SupplyFromHEVPossible’, in column ‘Description/Reference’ the following text is added: ‘Input only required for HEV in combination with alternator technology “conventional” or “smart”.’; (e) in row ‘PneumaticSystem/SizeOfAirSupply’, in column ‘Description/Reference’ the text is replaced by the following: ‘Allowed values: ‘Small’, ‘Medium Supply 1-stage’, ‘Medium Supply 2-stage’, ‘Large Supply 1-stage’, ‘Large Supply 2-stage’, ‘not applicable’ For electrically driven compressor ‘not applicable’ shall be provided. For PEV or FCHV no input is required.’; (f) in row ‘PneumaticSystem/CompressorDrive’, in column ‘Description/Reference’ the text is replaced by the following: ‘Allowed values: ‘mechanically’, ‘electrically’ For PEV or FCHV, only ‘electrically’ is an allowed value.’; ELI: http://data.europa.eu/eli/reg/2025/258/oj 13/105EN OJ L, 20.2.2025 (g) in row ‘PneumaticSystem/Clutch’, in column ‘Description/Reference’ the text is replaced by the following: ‘Allowed values: ‘none’, ‘visco’, ‘mechanically’ For PEV or FCHV no input is required.’; (h) in row ‘PneumaticSystem/SmartCompressionSystem’, in column ‘Description/Reference’ the text is replaced by the following: ‘For PEV, FCHV or HEV with a powertrain configuration ‘S’ or ‘S-IEPC’ in accordance with point 10.1.1 no input is required.’; (i) in row ‘PneumaticSystem/Ratio Compressor ToEngine’, in column ‘Description/Reference’ the text is replaced by the following: ‘For electrically driven compressor ‘0.000’ shall be provided. For PEV or FCHV no input is required.’; (j) in row ‘HVAC/EngineWasteGasHeatExchanger’, in column ‘Description/Reference’ the text is replaced by the following: ‘For PEV or FCHV no input is required.’; (k) in rows ‘HVAC/WaterElectricHeater’, ‘HVAC/AirElectricHeater’ and ‘HVAC/OtherHeating Technology’, in column ‘Description/Reference’ the text is replaced by the following: ‘Input to be provided only for HEV, FCHV and PEV’; (7) Table 4 is amended as follows: (a) the heading is replaced by the following: ‘Input parameters ‘VehicleTorqueLimits’ per gear (optional)’; (b) in row ‘Gear’, in column ‘Description/Reference’ the text is replaced by the following: ‘Only gear numbers need to be specified where vehicle related torque limits according to point 6 are applicable.’; (c) in row ‘MaxTorque’, in column ‘Description/Reference’ the following text is inserted: ‘Maximum engine or transmission input torque for the specific gear defined in accordance with point 6.’; (8) Table 5 is amended as follows: (a) in row ‘BodyworkCode’, in column ‘Description/Reference’ the text is replaced by the following: ‘Allowed values: ‘CA’, ‘CB’, ‘CC’, ‘CD’, ‘CE’, ‘CF’, ‘CG’, ‘CH’, ‘CI’, ‘CJ’ in accordance with point 3 of part C of Annex I to Regulation (EU) 2018/858’; (b) in row ‘Technology’, in column ‘Description/Reference’ the text is replaced by the following: ‘In accordance with Table 1 of Appendix 1. Allowed values: ‘FCV Article 9 exempted’, ‘Dual-fuel vehicle Article 9 exempted’, ‘HEV Article 9 exempted’, ‘PEV Article 9 exempted’, ‘In-motion charging Article 9 exempted’, ‘Multiple powertrains Article 9 exempted’, ‘H2 ICE Article 9 exempted’, ‘HV Article 9 exempted’, ‘Other technology Article 9 exempted’’; (c) the following row is added: ‘Simulation- P551 token [-] Licence number related to the X X X X’ ToolLicence- operation of the simulation Number tool in accordance with Article 7. (9) Table 6 is amended as follows: (a) row ‘EngineStopStart’, column ‘Description/Reference’ the following text is added: ‘For OVC-HEV the input shall be set to ‘true’.’; 14/105 ELI: http://data.europa.eu/eli/reg/2025/258/oj(b) row ‘PredictiveCruiseControl’, column ‘Description/Reference’ the text is replaced by the following: ‘In accordance with point 8.1.4, allowed values: ‘none’, ‘1,2’, ‘1,2,3’’; (10) Table 7 is replaced by the following: ‘Table 7 General input parameters for HEV, PEV and FCHV Parameter Parameter Type Unit Description/Reference name ID seirrol yvaeH seirrol muideM )elcihev yramirp( sesub yvaeH ro etelpmoc( sesub yvaeH )elcihev detelpmoc EN OJ L, 20.2.2025 Architec- P400 string [-] In accordance with point X X X tureID 10.1.3, the following values are allowed inputs: ‘E2’, ‘E3’, ‘E4’, ‘E-IEPC’, ‘P1’, ‘P2’, ‘P2.5’, ‘P3’, ‘P4’, ‘S2’, ‘S3’, ‘S4’, ‘S-IEPC’, ‘F2’, ‘F3’, ‘F4’, ‘F-IEPC’ Architec- P552 string [-] In the case of multiple X X tur- mechanically independent eIDPwt2 powertrains in accordance with point 10.1.4, the architecture ID of the second powertrain shall be provided. In accordance with points 10.1.3 and 10.1.4, the following values are allowed inputs: ‘E2’, ‘E3’, ‘E4’, ‘E-IEPC’, ‘S2’, ‘S3’, ‘S4’, ‘S-IEPC’, ‘F2’, ‘F3’, ‘F4’, ‘F-IEPC’ OVC P553 boolean [-] Vehicle where the REESS can X X X be charged from an external source. Shall be set to true for: — OVC-HEV — PEV — OVC-FCHV in case the charging device is also designed for normal operation of the vehicle and not just for service purposes ELI: http://data.europa.eu/eli/reg/2025/258/oj 15/105Parameter Parameter Type Unit Description/Reference name ID seirrol yvaeH seirrol muideM )elcihev yramirp( sesub yvaeH ro etelpmoc( sesub yvaeH )elcihev detelpmoc EN OJ L, 20.2.2025 BatteryOn- P554 boolean [-] To be declared for HV in X X X lyMode accordance with point 2(50). For PEV this input shall always be set to ‘true’. Dynamic P555 string [-] Allowed values: ‘None’, X X X X’ Charging ‘Overhead pantograph’, Technol- ‘Overhead trolley’, ‘Ground ogy rail’, ‘Wireless’ ‘Overhead pantograph’ is not applicable to medium lorries. ‘Overhead trolley’ is only applicable to heavy buses. (11) Table 8 is amended as follows: (a) the heading and the introductory wording are replaced by the following: ‘Table 8 Input parameters per electric machine position Separate entry for each individual powertrain in the case of multiple mechanically independent powertrains in accordance with point 10.1.4. (Only applicable if the component is present in the vehicle or in the specific powertrain)’; (b) the row ‘CertificationNumberEM’ is replaced by the following, whereby the first four columns of this row are merged together: ‘Electric machine system input data in accordance with Appendix 15 of Annex Xb’ (c) the row ‘CertificationNumberADC’ is replaced by the following, whereby the first four columns of this row are merged together: ‘ADC input data in accordance with Appendix 12 of Annex VI Optional input in the case of additional single-step gear ratio (ADC) between EM shaft and connection point to vehicle’s powertrain according to point 10.1.2 In case of EMS connected via belt the provisions in accordance with point 6.1.3 of Annex VI shall apply. Not allowed where parameter ‘IHPCType’ is set to ‘IHPC Type 1’.’ 16/105 ELI: http://data.europa.eu/eli/reg/2025/258/ojEN OJ L, 20.2.2025 (12) in Table 9, the following paragraph is added after the introductory paragraph: ‘Separate entry for each individual powertrain in the case of multiple mechanically independent powertrains in accordance with point 10.1.4.’; (13) Table 10 is replaced by the following: ‘Table 10 Input parameters per REESS (Only applicable if the component is present in the vehicle) Parameter Parameter name Type Unit Description/Reference ID StringID P411 integer [-] The arrangement of representative battery sub-systems in accordance with Annex Xb on vehicle level shall be declared by allocation of each battery sub-system to a specific string defined by this parameter. All specific strings are connected in parallel, all battery sub-system located in one specific parallel string are connected in series. Allowed values: ‘1’, ‘2’, ‘3’, … REESS input data in accordance with Appendix 15 of Annex Xb DeteriorationPer- P557 double, 2 [%] For PEV and OVC-HV either the minimum performance formanceRatio requirement (MPR) applicable to the vehicle in main lifetime according to Table 3 of Annex II of Regulation (EU) 2024/1257 of the European Parliament and of the Council(1)or a declared performance requirement (DPR) higher than the MPR shall be declared as input, if in turn such DPR is declared by the manufacturer and assessed for the vehicle in main lifetime according to the provisions of Regulation (EU) 2024/1257 and its implementing legislation. For HV which are not OVC-HV no input shall be provided. SOCmin P413 double, 1 [%] Only relevant in the case of REESS type ‘battery’. For PEV and for OVC-HV with a battery-only predominant mode in accordance with point 2(50) this input shall be declared as percentage of the rated capacity when zero (or other low limit defined by OEM) remaining battery charge is indicated to the driver or if normal vehicle operation(2)in battery-only predominant mode is not possible due to low battery charge. For HV which are not OVC-HV and for OVC-HV without a battery-only predominant mode in accordance with point 2(50) this input is optional and the parameter is only effective in the simulation tool where the input is higher than generic value as documented in the user manual. ELI: http://data.europa.eu/eli/reg/2025/258/oj 17/105EN OJ L, 20.2.2025 Parameter Parameter name Type Unit Description/Reference ID SOCmax P414 double, 1 [%] Only relevant in the case of REESS type ‘battery’. For PEV and for OVC-HV with a battery-only predominant mode in accordance with point 2(50) this input shall be declared as percentage of the rated capacity when the vehicle is indicated as fully charged to the driver. For HV which are not OVC-HV and for OVC-HV without a battery-only predominant mode in accordance with point 2(50) this input is optional and the parameter is only effective in the simulation tool where the input is lower than generic value as documented in the user manual. (1) Regulation (EU) 2024/1257 of the European Parliament and of the Council of 24 April 2024on type-approval of motor vehicles and engines and of systems, components and separate technical units intended for such vehicles, with respect to their emissions and battery durability (Euro 7), amending Regulation (EU) 2018/858 of the European Parliament and of the Council and repealing Regulations (EC) No 715/2007 and (EC) No 595/2009 of the European Parliament and of the Council, Commission Regulation (EU) No 582/2011, Commission Regulation (EU) 2017/1151, Commission Regulation (EU) 2017/2400 and Commission Implementing Regulation (EU) 2022/1362 (OJ L, 2024/1257, 8.5.2024, ELI: http://data. europa.eu/eli/reg/2024/1257/oj). (2) ‘normal vehicle operation’ shall exclude any significant limitation of operation (e.g. ‘limp home operation’ shall not be considered normal vehicle operation).’; (14) the following table is inserted after Table 11: ‘Table 11a Input parameters per fuel cell system (Only applicable if the component is present in the vehicle) One or two different fuel cell systems, each may have up to 3 identical units installed. Parameter Parameter name Type Unit Description/Reference ID Count P558 integer [-] Number of identical units, allowed values: ‘1’, ‘2’, ‘3’ MinPower P559 integer [W] Optional input for declaration of applicable lower power limit of fuel cell system on vehicle integration level. MaxPower P560 integer [W] Optional input for declaration of applicable upper power limit of fuel cell system on vehicle integration level.’ fuel cell system input data in accordance with Appendix 15 of Annex Xb (15) point 6 is replaced by the following: ‘6. Gear dependent torque limits and gear disabling’; 18/105 ELI: http://data.europa.eu/eli/reg/2025/258/ojEN OJ L, 20.2.2025 (16) point 6.2. is replaced by the following: ‘6.2. Gear disabling Either for the highest gear only or for both of the highest two gears (e.g. gear 5 and 6 for a 6-gear transmission) the vehicle manufacturer may declare a complete disabling of gears by providing 0 Nm as gear specific torque limit in the input to the simulation tool. Declaring such gear disabling only for the second highest gear is not allowed.’; (17) point 10 is replaced by the following: ‘10. HEV, FCHV and PEV The following provisions shall apply only in the case of HEV, FCHV and PEV.’; (18) in point 10.1.1 the following paragraph is added: ‘In the case of a FCHV: (a) ‘F’ in the case an EM component is present in the vehicle (b) ‘F-IEPC’ in the case an IEPC component is present in the vehicle’; (19) in point 10.1.2 the first paragraph is replaced by the following: ‘Where the configuration of the vehicle’s powertrain in accordance with point 10.1.1 is ‘P’, ‘S’, ‘F’ or ‘E’, the position of the EM installed in the vehicle’s powertrain shall be determined in accordance with the definitions set out in Table 14.’; (20) Table 14 is amended as follows: (a) in row ‘2’, in the column ‘Powertrain configuration in accordance with point 10.1.1’, the text is replaced by the following: ‘E, S, F’; (b) in the second row ‘3’, in the column ‘Powertrain configuration in accordance with point 10.1.1’, the text is replaced by the following: ‘E, S, F’; (c) in the second row ‘4’, in the column ‘Powertrain configuration in accordance with point 10.1.1’, the text is replaced by the following: ‘E, S, F’; (21) in Table 15, the following entry is added: ‘FCHV F F2 no no no yes yes no yes no F3 no no no no no yes yes no F4 no no no no no no no yes F-IEPC no no no no no no (1) no (1) ‘Yes’ (i.e. axle component present) only in the case that both parameters ‘DifferentialIncluded’ and ‘DesignTypeWheelMotor’ are set to ‘false’’; (22) the following point is inserted after Table 15: ‘10.1.4. Definition of architecture ID for second mechanically independent powertrain In case the vehicle is equipped with two powertrains where each powertrain is propelling different wheel axles of the vehicle and where these different powertrains can under no circumstances be mechanically connected, the vehicle manufacturer shall declare a second powertrain ID defined in accordance with point 10.1.3. Additionally, the two powertrains shall share the same REESS and separate electrical to mechanical energy converters. In this regard hydraulically driven axles shall, in accordance with point 5, second subparagraph, point (a) of this Annex, be treated as non-driven axles and shall thus not be counted as a mechanically independent powertrain. ELI: http://data.europa.eu/eli/reg/2025/258/oj 19/105Only powertrains of configuration S, S-IEPC, F, F-IEPC and E, in accordance with point 10.1.1, shall be allowed to be declared in case of presence of a second mechanically independent powertrain. Furthermore, only the combinations of architecture IDs for the first and second powertrain indicated with ‘yes’ in Table 15a may be declared.’; (23) the following table is inserted after point 10.1.4: ‘Table 15a Valid inputs of powertrain architecture into the simulation tool erutcetihcrA DI 2twPDIerutcetihcrA EN OJ L, 20.2.2025 E2 E3 E4 E-IEPC S2 S3 S4 S-IEPC F2 F3 F4 F-IEPC E2 yes yes yes yes no no no no no no no no E3 yes yes yes yes no no no no no no no no E4 yes yes yes yes no no no no no no no no E-IEPC yes yes yes yes no no no no no no no no S2 no no no no yes yes yes yes no no no no S3 no no no no yes yes yes yes no no no no S4 no no no no yes yes yes yes no no no no S-IEPC no no no no yes yes yes yes no no no no F2 no no no no no no no no yes yes yes yes F3 no no no no no no no no yes yes yes yes F4 no no no no no no no no yes yes yes yes F-IEPC no no no no no no no no yes yes yes yes’ (24) the following points are added after point 11.5: ‘12. Usable capacity of the hydrogen fuel storage system For fuel storage systems containing hydrogen the usable capacity shall be determined. 12.1. Compressed gaseous hydrogen The usable capacity shall be calculated based on the following equation: m usable¼VCHSS•ðρ15°C; NWP – ρ15°C; p Þ•0;001 min;rel where: m usable capacity [kg] usable V volume of the compressed hydrogen storage technology [l] CHSS p relative pressure corresponding to empty hydrogen tank condition [MPa] min,rel ρ density of the compressed gaseous hydrogen at 15 °C and at nominal working pressure (NWP) 15°C, NWP as defined in point 2.17. of UN Regulation No 134 [g/l] This density value shall be determined from Table 16 by linear interpolation. ρ density of the compressed gaseous hydrogen at 15 °C and at p [g/l] 15°C, pmin,rel min,rel This density value shall be determined from Table 16 by linear interpolation. 20/105 ELI: http://data.europa.eu/eli/reg/2025/258/ojEN OJ L, 20.2.2025 Table 16 Density of compressed hydrogen at 15 °C [g/l] Temperature (°C) Pressure (MPa) 0,5 1 2 3 4 5 6 7 8 9 10 35 70 15 0,5 0,9 1,7 2,6 3,4 4,2 4,9 5,7 6,5 7,3 8,0 24,0 40,2 12.2. Liquid hydrogen The usable capacity shall be calculated based on the following equation: m usable¼VLHSS•ðρ full;ref – ρemptyÞ•0;001 where: m usable capacity [kg] usable V volume of the liquid hydrogen storage technology [l] LHSS ρ density of the liquid hydrogen corresponding to full hydrogen tank full ref condition [g/l], defined by the following operational conditions: (a) the vehicle is operated until the empty hydrogen tank condition is reached. (b) the refilling starts immediately afterwards. (c) with regard to the state of the hydrogen as provided by the hydrogen refuelling infrastructure, reference shall be made to international standards, if available. ρ density of the liquid hydrogen corresponding to the empty hydrogen tank empty condition [g/l] The calculation model of the densities shall be disclosed to the approval authority on request. 12.3. Cryo-compressed hydrogen The usable capacity shall be calculated based on the following equations: m usable¼VCCHSS •ρ filling •f usable•0;001 ρ ¼0;0589•p + 52;395 filling filling where: m usable capacity [kg] usable V volume of the cryo-compressed hydrogen storage technology [l] CCHSS ρ density of the hydrogen at the end of the refuelling process [g/l] filling f usable share determined from Table 17 by linear interpolation [-] usable p absolute hydrogen pressure in the tank at the end of the refuelling filling process [bar] The value for hydrogen pressure in the tank at the end of the refuelling process used in the calculations shall be documented in the information document for the cryo-compressed hydrogen tank system. Existing international standards on cryo-compressed refuelling infrastructure shall be taken into account when determining this value, if already available. ELI: http://data.europa.eu/eli/reg/2025/258/oj 21/105EN OJ L, 20.2.2025 Table 17 Usable share of the hydrogen mass in a cryo-compressed hydrogen storage technology [-] Absolute pressure corresponding to empty hydrogen tank condition f (*)[-] [bar] usable 5 0,97 8 0,95 10 0,93 15 0,88 20 0,85 30 0,75 (*) The specified values for f assume that the tank has an internal heating system that is activated when the minimum pressure is reached. usable Where there is no such in-tank heating system, the manufacturer shall apply, upon approval from the approval authority, a lower value for f .’ usable (25) in Appendix 1, Table 1 is amended as follows: (a) in row ‘Fuel cell vehicle’, in column ‘Criteria for exemption’ the text is replaced by the following: ‘Vehicles shall be exempted where at least one of the following criteria apply: — A fuel cell vehicle which is not a fuel cell hybrid vehicle in accordance with point 2 (13) of this Annex. — The vehicle is equipped with multiple EMs located within a single powertrain which are not placed at the same connection point in the drivetrain in accordance with point 10.1.2 of this Annex; — The vehicle is equipped with multiple EMs located within a single powertrain which are placed at the same connection point in the drivetrain in accordance with point 10.1.2 of this Annex but do not have identical specifications (i.e. the same component certificate). — The vehicle has a powertrain architecture other than F2 to F4 or F-IEPC in accordance with point 10.1.3 of this Annex.’; (b) the row ‘ICE operated with hydrogen’ is deleted; (c) in row ‘Dual-fuel’, in column ‘Criteria for exemption’ the text is replaced by the following: ‘Dual-fuel vehicles with an engine operated with natural gas or LPG being of types 1B, 2B and 3B as defined in Article 2(53), 2(55) and 2(56) of Regulation (EU) No 582/2011 or dual-fuel vehicles with an engine operated with hydrogen being of a type other than 1A as defined in Article 2(52) of Regulation (EU) No 582/2011.’; (d) in row ‘HEV’, in column ‘Criteria for exemption’ the text is replaced by the following: ‘Vehicles shall be exempted where at least one of the following criteria apply: — The vehicle is equipped with multiple EMs located within a single powertrain which are not placed at the same connection point in the drivetrain in accordance with point 10.1.2 of this Annex. — The vehicle is equipped with multiple EMs located within a single powertrain which are placed at the same connection point in the drivetrain in accordance with point 10.1.2 of this Annex but do not have identical specifications (i.e. the same component certificate). — The vehicle has a powertrain architecture other than P1 to P4, S2 to S4, S-IEPC in accordance with point 10.1.3 of this Annex or other than IHPC Type 1.’; 22/105 ELI: http://data.europa.eu/eli/reg/2025/258/ojEN OJ L, 20.2.2025 (e) in row ‘PEV’, in column ‘Criteria for exemption’ the text is replaced by the following: ‘Vehicles shall be exempted where at least one of the following criteria apply: — The vehicle is equipped with multiple EMs located within a single powertrain which are not placed at the same connection point in the drivetrain in accordance with point 10.1.2 of this Annex. — The vehicle is equipped with multiple EMs located within a single powertrain which are placed at the same connection point in the drivetrain in accordance with point 10.1.2 of this Annex but do not have identical specifications (i.e. the same component certificate). — The vehicle has a powertrain architecture other than E2 to E4 or E-IEPC in accordance with point 10.1.3 of this Annex.’; (f) in row ‘Multiple permanently mechanically independent powertrains’, in column ‘Criteria for exemption’ the first paragraph is replaced by the following: ‘The vehicle is equipped with more than one powertrain where each powertrain is propelling different wheel axle(s) of the vehicle and where different powertrains can under no circumstances be mechanically connected and where the specific system is not covered by the allowed combinations defined in point 10.1.4 of this Annex.’; (g) the row ‘in-motion charging’ is deleted; (h) the following row is added: ‘Other Any other propulsion technology that is not listed in this table for which it is ‘Other technology not possible to perform a simulation in accordance with Article 9 of this Article 9 exempted’’ Regulation due to limitations of the simulation tool regarding this specific propulsion technology. ELI: http://data.europa.eu/eli/reg/2025/258/oj 23/105EN OJ L, 20.2.2025 ANNEX III Annex IV to Regulation (EU) 2017/2400 is amended as follows: (1) in point 2 the following subpoint is added: ‘(4) ‘hydrogen range’: The range that can be driven based on the usable amount of hydrogen.’; (2) point 3 is amended as follows: (a) Part I is amended as follows: (a) point 1.1.9. is deleted; (b) the following point is inserted after point 1.1.15.: ‘1.1.15a. FCHV architecture (e.g. F2, F3) .................................................................. ’; (c) point 1.1.18. is deleted; (d) point 1.1.29. is replaced by the following: ‘1.1.29. Tank system in the case of natural gas or hydrogen (e.g. compressed, liquified) ................ ’; (e) points 1.1.31. and 1.1.32 are inserted after point 1.1.30.: ‘1.1.31. Vehicle type approval number .................................................................... 1.1.32. Simulation tool licence number ................................................................ ’; (f) the following points are inserted after point 1.8.3.: ‘1.8.3a. CFD method licence number (if applicable) ...................................................... 1.8.3b. Delta CdxA from CFD (if applicable) ........................................................... ’; (g) points 1.10.5.2. to 1.10.5.5 are replaced by the following: ‘1.10.5.2. Heat pump type driver compartment cooling .................................................... 1.10.5.3. Heat pump type driver compartment heating .................................................... 1.10.5.4. Heat pump type passenger compartment cooling .............................................. ’; 1.10.5.5. Heat pump type passenger compartment heating .............................................. ’; (h) point 1.10.5.7. is replaced by the following: ‘1.10.5.7. Double glazing (yes/no) ........................................................................ ’; (i) the following point is inserted after point 1.13.15.: ‘1.13. 16 Boosting limitations ............................................................................ ’; (j) the following point is added after point 1.14.7.: ‘1.14.7a. Design type wheel motors (yes/no) ............................................................. ’; (k) point 1.15. is replaced by the following: ‘1.15. Rechargeable Energy Storage Systems specifications - Battery’; (l) point 1.15.6. is replaced by the following: ‘1.15.6. Certification method (measured, standard values) ...............................................’; (m) the following points are inserted after point 1.15.8.: ‘1.16. Rechargeable Energy Storage Systems specifications – Capacitor 1.16.1. Model ............................................................................................. 1.16.2. Certification number ............................................................................. 1.16.3. Capacitance (F) ................................................................................... 1.16.4. Minimum voltage (V) ............................................................................. 1.16.5. Maximum voltage (V) ............................................................................. 24/105 ELI: http://data.europa.eu/eli/reg/2025/258/ojEN OJ L, 20.2.2025 1.16.6. Hash of the input data and input information .................................................... 1.16.7. Certification method (measured, standard values) ................................................ 1.17. Fuel Cell System(s) specifications 1.17.1. Model ............................................................................................. 1.17.2. Certification number ............................................................................. 1.17.3. Certification method (measured, standard values) ................................................ 1.17.4. Rated power (kW) ................................................................................ 1.17.5. Count ........................................................................................... ’; (n) point 2.1. is replaced by the following: ‘2.1. Simulation parameters (for each mission profile and loading combination, for OVC-HEVs separately for charge depleting mode, charge sustaining mode and weighted, for OVC-FCHV separately for charge depleting mode and charge sustaining mode)’; (o) the following point is inserted after point 2.1.4.: ‘2.1.5. Primary vehicle sub-group ......................................................................... ’; (p) the following points are inserted after point 2.2.8.: ‘2.2.9. Average gearbox efficiency (%) ................................................................... 2.2.10. Average axle efficiency (%) ...................................................................... ’; (q) the following points are inserted after point 2.3.16.: ‘2.3.17. Fuel and energy consumption of auxiliary heater in case of zero emission vehicle (g/km, g/p-km, l/100km, l/p-km, MJ/km, MJ/p-km) .............................................................. 2.3.18. CO of auxiliary heater in case of zero emission vehicle (g/km, g/p-km) ......................... 2 2.3.19. Utility factor .................................................................................... ’; (r) point 2.4. is replaced by the following: ‘2.4. Electric and zero emission ranges (for beginning and end of life)’; (s) the following point is inserted after point 2.4.3.: ‘2.4.4. Hydrogen range (km) .............................................................................. ’; (b) Part II is amended as follows: (a) the following point is inserted after point 1.1.5a.: ‘1.1.5b. Total propulsion power relevant for subgroup allocation .......................................’; (b) point 1.1.9. is deleted; (c) the following point is inserted after point 1.1.15.: ‘1.1.15a. FCHV architecture (e.g. F2, F3) .................................................................. ’; (d) point 1.1.18. is deleted; (e) the following point is inserted after point 1.1.21.: ‘1.1.22. Vehicle type approval number .................................................................. ’; (f) the following point is inserted after point 1.2.18.: ‘1.2.19. Fuel cell system(s) total rated power (kW) ...................................................... ’; (g) point 2 is replaced by the following: ‘2. CO emissions and fuel consumption of the vehicle (for each mission profile and loading 2 combination, for OVC-HEVs separately for charge depleting mode, charge sustaining mode and weighted, for OVC-FCHV separately for charge depleting mode and charge sustaining mode)’; ELI: http://data.europa.eu/eli/reg/2025/258/oj 25/105EN OJ L, 20.2.2025 (h) the following points are inserted after point 2.4.5.: ‘2.4.6. Fuel and energy consumption of auxiliary heater in case of zero emission vehicle (g/km, g/p-km, l/100km, l/p-km, MJ/km, MJ/p-km) ................................................................. 2.4.7. CO of auxiliary heater in case of zero emission vehicle (g/km, g/p-km) ............................ 2 2.4.8. Utility factor ....................................................................................... ’; (i) point 2.5. is replaced by the following: ‘2.5. Electric Ranges (for begin and end of life)’; (j) the following point is inserted after point 2.5.3.: ‘2.5.4. Hydrogen range (km) .............................................................................. ’; (k) point 2.6.1. is replaced by the following: ‘2.6.1. Specific CO emissions (g/t-km) ................................................................... ’; 2 (l) point 2.6.4. is replaced by the following: ‘2.6.4. Specific CO emissions (g/p-km) ................................................................... ’; 2 (m) points 2.6.7., 2.6.8. and 2.6.9. are replaced by the following: ‘2.6.7. Actual charge depleting range for beginning and end of life (km) ................................... 2.6.8. Equivalent all electric range for beginning and end of life (km) ...................................... 2.6.9. Zero CO emission range for beginning and end of life (km) ...................................... ’; 2 (n) the following points are inserted after point 2.6.9.: ‘2.6.10. Hydrogen range (km) ............................................................................. 2.6.11. CO (g/km) ....................................................................................... 2 2.6.12. CO (g/m3-km) .................................................................................... 2 2.6.13. Fuel consumption (g/km) ......................................................................... 2.6.14. Fuel consumption (g/t-km) ....................................................................... 2.6.15. Fuel consumption (g/p-km) ....................................................................... 2.6.16. Fuel consumption (g/m3-km) .................................................................... 2.6.17. Fuel consumption (l/100km) ..................................................................... 2.6.18. Fuel consumption (l/t-km) ........................................................................ 2.6.19. Fuel consumption (l/p-km) ....................................................................... 2.6.20. Fuel consumption (l/m3-km) ..................................................................... 2.6.21. Energy consumption (MJ/km, kWh/km) .......................................................... 2.6.22. Energy consumption (MJ/t-km) ................................................................... 2.6.23. Energy consumption (MJ/p-km) .................................................................. 2.6.24. Energy consumption (MJ/m3-km, kWh/m3-km) ............................................... ’; (c) in Part III, point 1.1. is replaced by the following: ‘1.1. Input data and input information as set out in Annex III for the primary vehicle except: engine fuel map; engine correction factors WHTC_Urban, WHTC_Rural, WHTC_Motorway, BFColdHot, CFRegPer; torque converter characteristics; loss maps for transmission, retarder, angle drive and axle; electric power consumption map(s) for electric motor systems and IEPC; electric loss parameters for REESS; fuel map for FCS’. 26/105 ELI: http://data.europa.eu/eli/reg/2025/258/ojEN OJ L, 20.2.2025 ANNEX IV Annex V to Regulation (EU) 2017/2400 is amended as follows: (1) in point 3.1.2, the following paragraph is added: ‘If an engine of the engine CO family, defined in accordance with Appendix 3, is installed in a vehicle equipped 2 with an on-board device for the monitoring and recording of fuel and/or energy consumption and mileage of motor vehicles, in accordance with the requirements referred to in point (b) of Article 5c of Regulation (EC) No 595/2009, the test engine shall be equipped with this on-board device.’; (2) in point 3.1.6.2, the heading of the table ‘Table 1’ is replaced by ‘Table 1a’; (3) point 3.2. is amended as follows: (a) the first paragraph is replaced by the following: ‘The respective reference fuel for the engine systems under test shall be selected from the fuel types listed in Table 1 and shall be the same as the reference fuel used for the EC type-approval in accordance with Regulation (EU) No 582/2011. The fuel properties of the reference fuels listed in Table 1 shall be those specified in Annex IX to Commission Regulation (EU) No 582/2011 and for hydrogen in Annex 5 of UN Regulation No 49.’; (b) the sixth paragraph is replaced by the following: ‘For gas and hydrogen fuels the standards for determining the NCV according to Table 1 contain the calculation of the calorific value based on the fuel composition. The gas or hydrogen fuel composition for determining the NCV shall be taken from the analysis of the reference fuel batch used for the certification tests. For the determination of the gas or hydrogen fuel composition used for determining the NCV only one single analysis by a lab independent from the manufacturer applying for certification shall be performed. For gas or hydrogen fuels the NCV shall be determined based on this single analysis instead of a mean value of two separate measurements.’; (c) the seventh paragraph is replaced by the following: ‘For gas and hydrogen fuels, switches between fuel supply tanks of different production batches are allowed exceptionally. In that case, the NCV of each used fuel batch shall be calculated and the highest of those values shall be documented.’; (d) in Table 1 is amended as follows: (a) in row ‘Diesel / CI’, in column ‘Reference fuel type’ the text is replaced by the following: ‘B7 or B100’; (b) the following row is added: ‘Hydrogen / PI or Hydrogen / CI Hydrogen ISO 6976 or ASTM 3588’ (4) in point 3.2.1, first paragraph, the second sentence is replaced by the following: ‘One of the two reference fuels shall always be B7 or B100 and the other reference fuel shall be G25, GR, LPG Fuel B or Hydrogen.’; (5) in point 3.5., Table 2, the row ‘Fuel mass flow for gaseous fuels’ is replaced by the following: ‘Fuel mass flow for ≤ 1 % max 0,99 – ≤ 1 % max ≥ 0,995 1 % of reading or ≤ 2 s’ gaseous and calibration(3) 1,01 calibration 0,5 % of max. hydrogen fuels (3) calibration (3) of flow whichever is larger ELI: http://data.europa.eu/eli/reg/2025/258/oj 27/105EN OJ L, 20.2.2025 (6) in point 4.3.3.1, the paragraph is replaced by the following: ‘In addition to the provisions defined in Annex 4 to UN Regulation No 49, the actual fuel mass flow consumed by the engine in accordance with paragraph 3.4 and the data referred to in point 4.3.5.3(5)(a) in application to the WHTC test shall be recorded.’; (7) in point 4.3.4.1, the paragraph is replaced by the following: ‘In addition to the provisions defined in Annex 4 to UN Regulation No 49, the actual fuel mass flow consumed by the engine in accordance with paragraph 3.4 and the data referred to in point 4.3.5.3(5)(a) in application to the WHSC test shall be recorded.’; (8) in point 4.3.5.3, the first paragraph, the following subpoint is added after subpoint (4): ‘(5) If the test engine is equipped with an on-board device for the monitoring and recording of fuel and/or energy consumption and mileage of motor vehicles, according to point 3.1.2: (a) the information described in points 8.13.15.3 to 8.13.15.8 of Annex Xa; (b) for each point of the fuel mass flow recorded according to point (3) the OBFCM instantaneous value of the engine fuel rate referred to in point 5.13 of Annex Xa; (c) the time intervals between the different points of the fuel mass flow recorded according to point (3).’; (9) in point 5.3.3.1., Table 4, the following entries are added: ‘Hydrogen / PI or Hydrogen 120,0 Hydrogen / CI Diesel / CI B100 37,2’ (10) in point 6.1.9 the following text is added: ‘In case of a diesel engine tested with a reference fuel type of B100 in accordance with point 3.2, “Diesel B100 CI” shall be the input to the engine pre-processing tool’; (11) in Appendix 2, Part 1, is amended as follows: (a) point 3.2.2.2 is replaced by the following: ‘3.2.2.2. Heavy duty vehicles Diesel/Petrol/ LPG/NG/Ethanol (ED95)/Ethanol (E85)/ Hydrogen (T) /Hydrogen (TD) /Hydrogen (U) /Hydrogen (UD)/Diesel B100(1)(11)’ (b) point 3.2.17.1 is replaced by the following: ‘3.2.17.1. Fuel: LPG /NG-H/NG-L /NG-HL/ Hydrogen (T) /Hydrogen (TD) /Hydrogen (U) /Hydrogen (UD)(1)(11)’ (c) point 3.5.5.2.1 is replaced by the following: ‘3.5.5.2.1. For dual-fuel engines operated with natural gas or LPG: Specific CO 2 emissions over the WHSC in accordance with point 6.1 of Appendix 4 g/kWh’ 28/105 ELI: http://data.europa.eu/eli/reg/2025/258/ojEN OJ L, 20.2.2025 (d) the following points are inserted after point 3.5.5.2.1: ‘3.5.5.2.2. For dual-fuel engines operated with hydrogen: Specific energy consumption over the WHSC in accordance with point 6.2 of Appendix 4 MJ/kWh 3.5.5.2.3. For dual-fuel engines operated with hydrogen: Specific diesel consumption over the WHSC, SFC , determined in WHSC,corr accordance with point 6 of Appendix 4 g/kWh’ (e) the following table note is added: ‘(11) For hydrogen fuelled engines the letters T, TD, U and UD correspond to the following: (a) T in case of a PI engine being approved and calibrated for gaseous hydrogen (b) TD in case of a CI engine being approved and calibrated for gaseous hydrogen (c) U in case of a PI engine being approved and calibrated for liquefied hydrogen (d) UD in case of a CI engine being approved and calibrated for liquefied hydrogen’; (12) in Appendix 3, the following points are added after point 1.10.1: ‘1.11. Special provisions for diesel engines tested with a reference fuel type of B100 1.11.1 All engines within the same CO -family shall be capable of running on pure B100 and shall be capable of 2 running on the exact same range of biodiesel blends as indicated in point 3.2.2.2.1 of the Information Document drawn up in accordance with Appendix 2.’; (13) Appendix 4 is amended as follows: (a) point 4 is amended as follows: (a) the following paragraph is inserted after the second paragraph: ‘If an engine of the engine CO family selected according to point 3 is installed in a vehicle equipped with 2 an on-board device for the monitoring and recording of fuel and/or energy consumption and mileage of motor vehicles, in accordance with the requirements referred to in point (b) of Article 5c of Regulation (EC) No 595/2009, the test engine shall be equipped with this on-board device.’; (b) in the fifth paragraph, subpoint (3) the following paragraph is added: ‘In case market fuel or reference fuel of the type hydrogen is used, the NCV shall be calculated in accordance with the applicable standards as set out in Table 1 of this Annex from the fuel analysis submitted by the fuel supplier.’; (b) in point 5.3, first paragraph, subpoint (b) is amended as follows: (a) in sub-subpoint E, the first sentence is replaced by the following: ‘For dual-fuel engines operated with natural gas or LPG point D. above shall not apply.’; ELI: http://data.europa.eu/eli/reg/2025/258/oj 29/105EN OJ L, 20.2.2025 (b) the following sub-subpoint is added: ‘F. For dual-fuel engines operated with hydrogen, point D. shall not apply. Instead, the evolution coefficient shall be calculated by dividing the specific energy consumption of the second test by the specific energy consumption of the first test. The two values for specific energy consumption shall be determined in accordance with the provisions set out in point 6.2 of this Appendix using the two values of SFC determined in accordance with sub-subpoint C. The evolution coefficient may WHSC,corr have a value less than one.’; (c) point 5.4 is replaced by the following: ‘5.4. If the provisions laid down in point 5.3 (b) of this Appendix are applied, the subsequent engines selected for testing of conformity of CO emissions and fuel consumption related properties shall 2 not be subjected to the running-in procedure, but their specific fuel consumption over the WHSC or specific CO emissions over the WHSC in the case of dual-fuel engines operated with natural 2 gas or LPG or specific energy consumption in the case of dual-fuel engines operated with hydrogen determined on the newly manufactured engine with a maximum run-in time of 15 hours in accordance with point 5.1 of this Appendix shall be multiplied by the evolution coefficient.’; (d) point 5.5 is amended as follows: (a) the introductory wording is replaced by the following: ‘In the case described in point 5.4 of this Appendix the values for the specific fuel consumption over the WHSC or specific CO2 emissions over the WHSC in the case of dual-fuel engines operated with natural gas or LPG or specific energy consumption in the case of dual-fuel engines operated with hydrogen to be taken shall be the following:’; (b) subpoint (b) is replaced by the following: ‘(b) for the other engines, the values determined on the newly manufactured engine with a maximum run-in time of 15 hours in accordance with point 5.1 of this Appendix multiplied by the evolution coefficient determined in accordance with point 5.3, subpoint (b), sub-subpoint (D), of this Appendix or point 5.3, subpoint (b), sub-subpoint (E), of this Appendix in the case of dual- fuel engines operated with natural gas or LPG or point 5.3 subpoint (b), sub-subpoint (F), of this Appendix in the case of dual-fuel engines operated with hydrogen.’; (e) in point 5.6, the second sentence is replaced by the following: ‘In this case the specific fuel consumption over the WHSC or specific CO2 emissions over the WHSC in the case of dual-fuel engines operated with natural gas or LPG or specific energy consumption in the case of dual-fuel engines operated with hydrogen determined on the newly manufactured engine with a maximum run-in time of 15 hours in accordance with point 5.1 of this Appendix shall be multiplied by the generic evolution coefficient of 0,99.’; (f) point 6.1 is amended as follows: (a) the first paragraph is replaced by the following: ‘For dual-fuel engines operated with natural gas or LPG, the target value to assess the conformity of the certified CO emissions and fuel consumption related properties shall be calculated from the two 2 separate values for each fuel of the corrected specific fuel consumption over the WHSC, SFC , WHSC,corr in g/kWh determined in accordance with point 5.3.3 of this Annex. Each of the two separate values for each fuel shall be multiplied by the respective CO emission factor for each fuel in accordance 2 with Table 1 of this Appendix. The sum of the two resulting values of specific CO emissions over 2 the WHSC defines the applicable target value to assess the conformity of the certified CO emissions 2 and fuel consumption related properties of dual-fuel engines operated with natural gas or LPG.’; (b) in Table 1, the following row is added ‘Diesel / CI B100 2,83’ 30/105 ELI: http://data.europa.eu/eli/reg/2025/258/ojEN OJ L, 20.2.2025 (g) the following point is added after point 6.1: ‘6.2. Special requirements for dual-fuel engines operated with hydrogen For dual-fuel engines operated with hydrogen, the target value to assess the conformity of the certified CO emissions and fuel consumption related properties shall be calculated from the two 2 separate values for each fuel of the corrected specific fuel consumption over the WHSC, SFC WHSC, , in g/kWh determined in accordance with point 5.3.3 of this Annex. Each of the two separate corr values for each fuel shall be multiplied by the respective NCV , as set out in point 5.3.3.1, and std then multiplied by a factor of 0,001. The sum of the two resulting values of specific energy consumption over the WHSC defines the applicable target value to assess the conformity of the certified CO emissions and fuel consumption related properties of dual-fuel engines operated 2 with hydrogen.’; (h) point 7.6 is replaced by the following: ‘7.6. For dual-fuel engines operated with natural gas or LPG point 7.5 shall not apply. Instead, the actual value for assessment of conformity of the certified CO emissions and fuel consumption related 2 properties shall be the sum of the two resulting values of specific CO emissions over the WHSC 2 determined in accordance with the provisions set out in point 6.1 of this Appendix using the two values of SFC determined in accordance with point 7.4 of this Appendix.’; WHSC,corr (i) the following point is added after point 7.6: ‘7.7. For dual-fuel engines operated with hydrogen point 7.5 shall not apply. Instead, the actual value for assessment of conformity of the certified CO emissions and fuel consumption related properties 2 shall be the sum of the two resulting values of specific energy consumption over the WHSC determined in accordance with the provisions set out in point 6.2 using the two values of SFC determined in accordance with point 7.4.’; WHSC,corr (j) point 8 is replaced by the following: ‘8. Limit for conformity of one single test For diesel engines (B7 or B100), the limit values for the assessment of conformity of one single engine tested shall be the target value determined in accordance with point 6 plus 4 percent. For engines operated with a single fuel other than diesel (B7 or B100) and for dual-fuel engines, the limit values for the assessment of conformity of one single engine tested shall be the target value determined in accordance with point 6 plus 5 percent.’; (k) the following point is inserted after point 8: ‘8.1. For dual-fuel engines operated with hydrogen an additional limit value regarding the specific diesel consumption over the WHSC, SFC , shall apply. The applicable additional limit value for the WHSC,corr assessment of conformity of one single engine tested shall be the specific diesel consumption over the WHSC, SFC , determined in accordance with point 6 plus a tolerance of 4g/kWh.’; WHSC,corr (l) in point 9.2 the following paragraph is added: ‘Notwithstanding the first paragraph, for dual-fuel engines operated with hydrogen a single test of one engine tested in accordance with point 4 of this Appendix shall also be considered as nonconforming if the actual value of the specific diesel consumption over the WHSC, SFC , determined in WHSC,corr accordance with point 7 is higher than the limit values defined in accordance with point 8.1.’; (14) in Appendix 7, Table 1a, the row ‘FuelType’ is replaced by the following: ‘FuelType P193 string [-] Allowed values: “Diesel CI”, “Ethanol CI”, “Petrol PI”, “Ethanol PI”, “LPG PI”, “NG PI”, “NG CI”, “H2 CI”, “H2 PI”, “Diesel B100 CI”;’ ELI: http://data.europa.eu/eli/reg/2025/258/oj 31/105EN OJ L, 20.2.2025 ANNEX V Annex VI to Regulation (EU) 2017/2400 is amended as follows: (1) the point 4.1.7.2 after point 4.2.7.1 is replaced by the following: ‘4.2.7.2. Measurement sequence’; (2) the following point is added after point 6.1.2.1: ‘6.1.3. Case C: Belt (or similar technology) that is used for connection of an electric machine system to the main powertrain of the vehicle (as defined in the description of the optional ADC input data in Table 8 of Annex III of this Regulation). In this case the input data required in accordance with Table 7 of Appendix 12 shall be determined in accordance with the provisions defined in Appendix 11, whereby the value of f shall be 0,08 and the T maximum available torque of the electric machine system shall be used for T .’; max,in (3) in point 7.6, the second sentence is replaced by the following: ‘Only one transmission per family shall be tested.’; (4) in point 7.10, the first sentence is replaced by the following: ‘Notwithstanding point 7.6, if the result of a test performed in accordance with point 8 is higher than the one specified in point 8.1.3., three additional transmissions from the same family shall be tested.’; (5) in Appendix 9, the second ‘Stall point’ section is replaced by the following: ‘Stall point: — Torque ratio at stall point v =0: 0 μ(v ) = 1,8/v’; 0 s (6) in Appendix 12, Table 1, in row ‘DifferentialIncluded’, in column ‘Description/Reference’ the following text is added: ‘This input parameter is only required for front wheel driven vehicles.’. 32/105 ELI: http://data.europa.eu/eli/reg/2025/258/ojEN OJ L, 20.2.2025 ANNEX VI ‘ANNEX VIIA Certification procedure for testing wheel ends 1. Introduction and definitions 1.1 Introduction This Annex describes the certification procedure regarding the friction losses of wheel ends for non-driven axle applications. The certification of wheel ends on driven axles is included in the procedure laid down in Annex VII. Alternatively to the certification of wheel ends, the standard friction losses of wheel ends as set out in point 6 can be applied for the purpose of the determination of vehicle specific CO emissions. 2 1.2 Definitions For the purposes of this Annex the following definitions shall apply: (1) ‘wheel bearing’ means the bearings that are used to support one wheel end in a vehicle. (2) ‘wheel end’ means the assembly of components that establish the connection between the wheel and the axle, which includes the wheel bearings, seals and lubricants as well as the wheel hub, if available, and all other components relevant to the rotational friction, and may exclude the brake disc and wheel flange. (3) ‘radial load’ means the load applied to the wheel end perpendicular and vertically to the shaft axis. (4) ‘axial load’ means the load applied to the wheel end in the direction of the shaft axis considering the dynamic wheel radius. (5) ‘load line position’ means the position on the wheel end through which the radial load is applied. (6) ‘wheel end manufacturer’ means the legal entity that produces the wheel end. (7) ‘wheel end family’ means a manufacturer's grouping of wheel ends which through their design, as set out in point 2.3, have similar design characteristics and CO and fuel consumption properties. 2 (8) ‘customer’ means the legal entity that sells the vehicle or axle in which the wheel end is installed. (9) ‘testing entity’ means the legal entity responsible for testing the wheel end, either the wheel end manufacturer or a third-party. (10) ‘seal’ means the part of the wheel bearing designed to prevent the intrusion of particles or liquids in the wheel bearing, or to prevent lubricant leakage. (11) ‘clearance’ means the total distance through which one bearing ring can be moved relative to the other in the axial direction. (12) ‘preload’ means the negative operating clearance in the wheel bearing. (13) ‘inner ring’ means the ring or rings of the wheel bearings with smaller diameter than the outer ring. (14) ‘outer ring’ means the ring or rings of the wheel bearings with greater diameter than the inner ring. (15) ‘measurement’ means the measurement of friction losses in the wheel end expressed as a friction torque in Nm. (16) ‘bearing rated load’ means the maximum design load as defined in the wheel bearing specifications. (17) ‘pitch diameter’ means the distance in a wheel bearing between the geometrical centre of two rolling elements when the two rolling elements are diametrically opposed. ELI: http://data.europa.eu/eli/reg/2025/258/oj 33/105EN OJ L, 20.2.2025 (18) ‘run-in procedure’ means the procedure of conditioning an unused wheel end under load in order to bring it to a state of representative in-use conditions. 2. General requirements 2.1 Wheel end selection The wheel ends used for the verification of friction loss measurements shall be new. They shall be the same wheel ends as defined by specifications, as intended for series production, and as will be installed in the customer’s applications. These specifications include, but are not limited to, the dimensions, the materials, the surfaces’ quality and treatments, the numbers of rollers, the seal, the lubricant’s type, quality, and quantity as well as any other characteristic relevant for the friction of the wheel end. 2.2 Number of wheel ends to test For the purpose of the CO certification of a wheel end family, at least four different wheel ends from the family 2 parent shall be tested according to the procedures described in points 3. and 4. using for each the same speed and load target steps. 2.3 Parameters defining a wheel end family The following criteria shall be the same to all members of a wheel end family: — rolling elements’ quantity; — rolling elements’ diameter within ± 0,5mm (when measured perpendicular and at the centre of the long axis); — rolling elements’ length within ± 1mm (when measured along the long axis); — pitch diameter within ±1mm; — number of rows; — outer ring contact angle with the rolling elements with ± 1deg; — the lubricant type: oil or grease; — load-line position (in the case the family parent is not tested at the indicated position in Figure 2). 2.4 Choice of the wheel end family parent The family parent of a wheel end family shall be the member with the highest friction. If a family has more than one member, the testing entity shall justify the choice of the family parent based on the component properties. The bearing rated load for the family shall be the highest bearing rated load of all family members. For each family member, the testing entity shall provide quantifiable data on: — the seals performance (e.g. friction losses); — the lubrication (oil or grease) performance (e.g. viscosity); — the preload / clearance range (e.g. maximum and minimum). The approval authority may request the testing entity to provide additional justification, including by means of simulations or calculations, when it considers that the properties listed in the fourth paragraph are sufficient to justify the choice of the family. 34/105 ELI: http://data.europa.eu/eli/reg/2025/258/ojEN OJ L, 20.2.2025 2.5 Run-in The testing entity shall apply a run-in procedure on the wheel ends. The run-in procedure shall use the same test set up and have the same requirements as for the measurements of friction losses. 2.5.1 Run-in procedure The run-in procedure shall comprise of four successive phases. During the first phase, the wheel end shall be run clockwise at a constant speed of 300 rpm with a radial load applied corresponding to 50 % of the bearing rated load for a duration of 60 ±2 minutes. During the second phase, the wheel end shall be run counterclockwise at a constant speed of 300 rpm with a radial load applied corresponding to 50 % of the bearing rated load for a duration of 60 ±2 minutes. During the third phase, the wheel end shall be run clockwise at a constant speed of 500 rpm with a radial load applied corresponding to 100 % of the bearing rated load for a duration of 660 ±2 minutes. During the fourth phase, the wheel end shall be run counterclockwise at a constant speed of 500 rpm with a radial load applied corresponding to 100 % of the bearing rated load for a duration of 660 ±2 minutes. The run-in procedure shall be documented by the testing entity with regard to run-time, speed, radial load, and bearing temperature, and reported to the approval authority. 2.6 Lubricant 2.6.1 Lubricant requirements The lubricant type, quality and quantity shall be the same as defined by specifications, as intended for series production, and as will be in customer’s applications. If the wheel end manufacturer is not delivering lubricant with the wheel bearing, the customer shall provide the necessary information on the lubricant that will be used in the final application to allow accurate testing of the wheel end. 2.6.2 Oil lubricant If the lubricant is of the oil type, the oil level within the bearing shall be as defined in the axle specifications. In the absence of a specification the maximum geometrically possible oil level of the axle shall be applied. 2.7 Operating clearance/Preload If the bearing operating clearance/preload can be adjusted, the clearance/preload used for testing the wheel bearing shall be set at the arithmetic mean of the clearance/preload range defined in the specifications, within a tolerance of ±20 μm. 2.8 Seals The seals used for testing the wheel end shall be the same as defined by the specifications, as intended for series production, and as will be installed in the customer’s applications. If the wheel end manufacturer is not delivering seals with the wheel end, the customer shall provide the necessary information on the seals that will be used in the final application to allow accurate testing of the wheel end. ELI: http://data.europa.eu/eli/reg/2025/258/oj 35/105EN OJ L, 20.2.2025 3. Testing procedure for wheel ends 3.1 Test conditions 3.1.1 Ambient temperature The temperature in the test cell shall be maintained at 25 °C ± 10 °C. The ambient temperature shall be measured within a distance of 1 metre to the wheel bearing’s outer ring and documented in the test report. It shall be a target temperature for the testing entity, of which systematic deviations across tests are not allowed. 3.1.2 Wheel bearing temperature The wheel bearing temperature shall be measured on the bore-side of the inner ring located on the inner-side of the vehicle. During measurements, the wheel bearing temperature shall be kept at a maximum of 60 °C. For that purpose, air cooling may be applied in accordance with section 3.3.5. 3.2 Test set-up The test set-up shall be as illustrated in Figure 1. Figure 1 Simplified schematic of the test set-up 3.2.1 Installation of torque, load, temperature, and speed measuring devices Torque measuring devices shall be installed in order to measure friction losses in the wheel end, and in such a way that parasitic effects are minimized. A speed measuring device shall be installed to measure the rotational speed of the wheel end. A temperature measuring device shall be installed to measure the temperature of the bore-side of the inner ring on the inner-side of the vehicle. A load measuring device shall be installed to measure the radial load applied on the wheel end. 36/105 ELI: http://data.europa.eu/eli/reg/2025/258/ojEN OJ L, 20.2.2025 3.2.2 Test set-up The test set-up shall consist of an electric machine used to apply a rotational speed to the wheel end, and of a device capable of applying a radial load onto the wheel end. The wheel end shall be installed such that the outer ring of the wheel bearing is rotating and used for speed input, while the inner ring is not rotating. Gearings and couplings are allowed between the electric machine and the wheel end, provided that they do not influence the results of the measurements. 3.2.3 Measurement equipment The calibration laboratory facilities shall comply with the requirements of either IATF 16949, ISO 9000 series or ISO/IEC 17025. All laboratory reference measurement equipment, used for calibration and/or verification, shall be traceable to national (international) standards. The measurement accuracies set in points 3.2.3.1 to 3.2.3.4 shall concern the complete measurement chain, including sensors and additional sources of inaccuracy. The specified tolerances for uncertainty shall not be used for systematic deviations when measurement instruments are applied with higher accuracy. 3.2.3.1 Friction torque The uncertainty of the torque measurement for the measurement of the wheel end’s friction torque shall not exceed ± 0,2 Nm. In the case of a higher uncertainty, the measurements shall be calculated as set out in point 3.4.6. 3.2.3.2 Radial load The uncertainty of the load measurement for the measurement of radial load applied on the wheel end shall not exceed ± 1 kN. If the radial load is applied as a mass, this shall be converted by applying the gravitational constant of 9,81 N/kg. 3.2.3.3 Rotational speed The uncertainty of the rotational speed measurement for the measurement of the wheel end speed shall not exceed ± 2,5 rpm. 3.2.3.4 Temperatures The uncertainty of the temperature measurement for the measurement of the ambient temperature shall not exceed ± 2 °C. The uncertainty of the temperature measurement for the measurement of wheel bearing temperature shall not exceed ± 2 °C. 3.2.4 Measurement signals and data recording The following signals shall be recorded for the purpose of the calculation of the friction torque losses: (a) Input rotational speed [rpm] (b) Wheel end friction torque [Nm] (c) Applied radial load [kN] (d) Bearing temperature [°C] (e) Ambient temperature [°C] The following minimum sampling frequencies of the sensors shall be applied: (a) Friction torque: 300 Hz (b) Rotational speed: 100 Hz (c) Temperatures: 10 Hz (d) Load: 10 Hz ELI: http://data.europa.eu/eli/reg/2025/258/oj 37/105EN OJ L, 20.2.2025 The raw data of the friction torque shall be filtered by a suitable low-pass filter such as a Butterworth 2nd order filter with a cut-off frequency of 0,1 Hz. Filtering of the other signals may be applied in agreement with the approval authority. Any aliasing effect shall be avoided. The raw data shall not be reported. 3.3 Test procedure To determine the torque loss map for a wheel end, the grid points of the friction torque loss map data shall be measured as specified in point 3.4. The measurement of a grid point may only be repeated if there is a technical justified reason to do so such as the failure of a measurement sensor. This repetition shall be recorded in the test report. The total testing of one wheel end sample, from initiating the run-in until concluding the last grid point, shall be concluded within a maximum of 55 hours, otherwise the test of the sample will be void. 3.3.1 Radial load range The friction loss map shall be measured with radial loads corresponding to 25 %, 50 %, and 100 % of the bearing rated load. The target loads shall be reported by the testing entity together with the actual measured load. 3.3.2 Radial load line position The radial load shall be applied onto the wheel end at its centre, so that the load line position is at the centre of the wheel bearing within ± 0,5 mm. The centre of the wheel bearing is determined as the middle of the outside positions of the inner WB rings (see Figure 2). Figure 2 Determination of Load Line Position At the request of the manufacturer and with the approval of the approval authority the load line position may be chosen outside the centre of the bearing. In this case the manufacturer has to provide evidence that this load line position corresponds to the application of the wheel end. 3.3.3 Axial load For the purpose of these the measurements set out under this point, no axial load shall be applied onto the wheel ends. 38/105 ELI: http://data.europa.eu/eli/reg/2025/258/ojEN OJ L, 20.2.2025 3.3.4 Rotational speed range The wheel end shall be tested at 250 and 500 rpm. All rotational speed points shall be measured in a clockwise and counterclockwise direction in accordance with the testing sequence specified in point 3.4.1. The results may be reported as the average measured values of the clockwise and counterclockwise direction. 3.3.5 Cooling and heating The wheel end may be air cooled by a fan using ambient air at ambient temperature as defined in point 3.1.1. Other external cooling or heating shall not be allowed. In the case that air cooling is used, the same cooling condition shall be applied for all tested wheel ends at all grid points. 3.4 Measurement of friction torque loss maps 3.4.1 Testing sequence The testing sequence to be applied depends on the measurement configuration of the test set-up. In the case that the measurement configuration is such that the radial load and the friction torque are both determined individually by dedicated torque measurement device, the wheel end testing shall follow Testing sequence A as described in point 3.4.1.1. In the case that the measurement configuration is such that the radial load and the friction torque are determined simultaneously by the same torque measurement device, the wheel end testing shall follow Testing sequence B as described in point 3.4.1.2. If, based upon the functional descriptions referred to in the second and third paragraphs, the testing entity cannot judge which test sequence shall be used, Testing sequence A shall be applied. 3.4.1.1 Testing sequence A The friction measurements of the grid points shall start at the highest radial load downwards to the lowest radial load, while at each load step first the highest and then the lowest rotational speed shall be tested. Once the grid point at the lowest load and lowest rotational speed has been measured, the rotational direction on the wheel end is reversed and the previously described sequence is repeated. The testing sequence is shown schematically in Figure 3. Figure 3 Testing sequence scheme A ELI: http://data.europa.eu/eli/reg/2025/258/oj 39/105EN OJ L, 20.2.2025 3.4.1.2 Testing sequence B The friction measurements of the grid points shall start at the highest radial load and the highest rotational speed. Then the rotational direction is reversed and then the same load/speed point is measured. While keeping the same load, the rotational direction is again reversed and the friction is measured at the lower rotational speed. This load/ speed point is also measured in both rotational directions. The previously described sequence is repeated for the 50 % and 25 % radial load settings. The testing sequence is shown schematically in Figure 4. Figure 4 Testing sequence scheme B 3.4.2 Stabilisation and measurement duration For each grid point the testing entity shall allow for a stabilisation period of 117±2 minutes before starting the measurement. In addition, the following stabilisation periods shall be applied: — For Testing sequence A: Before the first grid point and before the seventh grid point (after the rotational direction has been reversed) the stabilisation period shall be extended by an additional 60±2 minutes. The stabilisation times are indicated in Figure 3. — For Testing sequence B: Before the first grid point the stabilisation period shall be extended by an additional 60±2 minutes. Before the fifth and the nineth grid point the stabilisation period shall be extended by an additional 30±2 minutes. The stabilisation times are indicated in Figure 4. The friction for each single grid point shall be measured during the last 180 seconds of the corresponding constant speed phase. In the case that the stabilisation criterion as described in section 3.4.3 is not fulfilled during the last 180 seconds of the grid point, the measurement may be taken from the first earlier uninterrupted segment of 180 seconds where the stabilisation criterion was fulfilled. In the case that the test set-up is equipped with a support of the wheel end by means of a support bearing, which is required to be rotated in both directions during the measurement of each grid point, the friction shall be measured during the last 180 seconds of the clockwise rotation of the support bearing and during the last 180 seconds of the counterclockwise rotation of the support bearing. 40/105 ELI: http://data.europa.eu/eli/reg/2025/258/ojEN OJ L, 20.2.2025 3.4.3 Stabilisation criterion The stabilisation criterion shall be met when the standard deviation of friction torque during measurement does not exceed 15 % of the mean value or 0,4 Nm, whichever value is the highest. 3.4.4 Averaging of grid points For every individual sample, all recorded values for each grid point shall be averaged to an arithmetic mean over the measurement duration. Next, these arithmetic mean values of the same grid point shall be averaged over all samples to one arithmetic mean value per grid point. 3.4.5 Measurement validation For each grid point: — The wheel end speed value before averaging shall not deviate from the set value by more than ± 5 rpm; — The radial load value before averaging shall not deviate from the set value by more than ± 2 kN; — No systematic deviation from the set values is allowed. If the above specified criteria are not met, the measurement of the respective grid point is void. In this case, the measurement for the entire affected speed and load step shall be repeated, and the reason for voiding the grid point shall be recorded in the test report. After passing the repeated measurement, the data shall be consolidated. 3.4.6 Assessment of total uncertainty of the torque loss In the case that the uncertainties on the measured friction torque are below the limit set in point 3.2.3.1, the reported friction torque loss shall be regarded as equal to the measured friction torque losses. In the case of higher uncertainties, the part of the uncertainty exceeding the limit shall be added to the measured friction torque losses. The final wheel end friction torque loss at a given speed and load shall thus be calculated as follows: T reported ¼ T measured + maxð0; Ut – U limitÞ Where: — T is the calculated friction torque loss at a given speed and load reported for the CO certification of reported 2 wheel ends [Nm]; — T is the measured friction torque loss according to section 3.4.4 at a given speed and load [Nm]; measured — U is the absolute value of the torque uncertainty (>0), expressed in Nm; t — U is 0,2 Nm. limit 3.5 Calculation of the friction value for certification For the calculation of the final friction value for the wheel end, the grid points of the reported torque loss map shall first be averaged for all the wheel end samples in accordance with section 0, corrected in accordance with section 3.4.6, if applicable, and then weighted according to Table 1 for non-driven axle wheel end applications. ELI: http://data.europa.eu/eli/reg/2025/258/oj 41/105EN OJ L, 20.2.2025 Table 1 Weighting factors for non-driven axle applications 250 rpm 500 rpm 25 % load 0,4% 2,4% 50 % load 7,9% 35,3% 100 % load 9,5% 44,5% 3.6 Declaration of the certified friction value The wheel end manufacturer may declare the weighted average friction as calculated in section 3.5 as the certified value for the wheel end family. Alternatively, the wheel end manufacturer has the option to declare any higher friction value. The declared friction value shall be rounded to 1 place to the right of the decimal point. 4. Conformity of the certified CO emissions and fuel related properties 2 Every wheel end certified in accordance with this Annex shall be so manufactured as to conform, with regard to the description as given in the certification form and its annexes, to the approved type. The conformity of the certified CO emissions and fuel consumption related properties procedures shall comply with those set out in 2 Article 31 of Regulation (EU) 2018/858. Conformity of the certified CO emissions and fuel consumption related properties shall be checked on the basis 2 of the description in the certificate set out in Appendix 1 and the specific conditions laid down in this point. The wheel end manufacturer shall test, at least every second year from the date of the family parent’s certification, the number of wheel end families shown in Table 2. The number of wheel end families to be tested depends on the production volumes of the year previous to the year when the conformity of production testing is due. At least two wheel ends of the same family member shall be tested. Table 2 Sample size for conformity testing Production number Number of wheel end families to be tested 0– 100 000 2 100 001– 150 000 3 150 001– 250 000 4 250 001and more 5 5. Production conformity testing For conformity of the certified CO emissions and fuel consumption related properties testing, the wheel end 2 manufacturer shall apply the same procedure as described in point 3, including the run-in procedure and validation criteria. 5.1 Conformity of the certified CO emissions and fuel consumption related properties test assessment 2 A conformity of the certified CO emissions and fuel consumption related properties test is passed when the 2 weighted average friction value from the conformity testing is lower or equal to the declared friction value for wheel end family, with an allowed tolerance margin of +10 %. 42/105 ELI: http://data.europa.eu/eli/reg/2025/258/ojEN OJ L, 20.2.2025 If the production conformity testing is not passed, three additional wheel ends shall be tested using the same procedure. The recorded values of all tested ends, including the three additional wheel ends, shall be averaged for each grid point to an arithmetic mean. If the conformity of production test is again not passed, the provisions set out in Article 23 shall apply. If a family member proves to have higher friction than the family parent, the family member shall be reclassified into another wheel end family, and require a new certification. 6. Standard friction torque loss The standard friction loss for non-driven axle applications shall be 4,8 Nm. ELI: http://data.europa.eu/eli/reg/2025/258/oj 43/105EN OJ L, 20.2.2025 Appendix 1 MODEL OF A CERTIFICATE OF A COMPONENT, SEPARATE TECHNICAL UNIT OR SYSTEM Maximum format: A4 (210 × 297 mm) CERTIFICATE ON CO EMISSIONS AND FUEL CONSUMPTION RELATED PROPERTIES OF A WHEEL END FAMILY 2 Communication concerning: Administration stamp — granting1 — extension — refusal1 — withdrawal1 of a certificate on CO emission and fuel consumption related properties of a wheel end family in accordance with 2 Commission Regulation (EU) 2017/2400. Commission Regulation (EU) 2017/2400 as last amended by .................... Certification number: Hash: Reason for extension: 1 Delete where not applicable SECTION I 1. Make (trade name of manufacturer): 2. Type: 3. Name and address of manufacturer: 4. Name(s) and address(es) of assembly plant(s): 5. Name and address of the manufacturer's representative (if any) SECTION II 1. Additional information (where applicable): see Addendum 2. Approval authority responsible for carrying out the tests: 3. Date of test report 4. Number of test report 5. Remarks (if any): see Addendum 6. Place 7. Date 8. Signature Attachments: 1. Information document 2. Test report 44/105 ELI: http://data.europa.eu/eli/reg/2025/258/ojEN OJ L, 20.2.2025 Appendix 2 WHEEL END INFORMATION DOCUMENT Information document No: … Issue: … Date of issue: … Date of Amendment: … pursuant to … Wheel end type and family (if applicable): … GENERAL 1. Name and address of manufacturer: 2. Make (trade name of manufacturer): 3. Wheel end type: 4. Axle type: 5. Wheel end family (if applicable): 6. Commercial name(s) (if available): 7. Name(s) and address(es) of assembly plant(s): 8. Name and address of the manufacturer's representative: ELI: http://data.europa.eu/eli/reg/2025/258/oj 45/105EN OJ L, 20.2.2025 PART 1 Essential characteristics of the (parent) wheel end and the wheel end types within a wheel end family Family member Specific wheel end characteristics Parent wheel end #1 #2 #3 Rolling elements’ quantity … … … … Rolling elements’ diameter … … … … Rolling elements’ length … … … … Pitch diameter … … … … Number of rows … … … … Outer ring contact angle with the rolling … … … … elements Lubricant type … … … … Load-line position … … … … Rated load … … … … LIST OF ATTACHMENTS No Description Date of issue 1 Seal performance … 2 Lubrication performance … 3 Preload or clearance range … 4 List of part numbers for wheel end components …’. 46/105 ELI: http://data.europa.eu/eli/reg/2025/258/ojEN OJ L, 20.2.2025 ANNEX VII Annex VIII to Regulation (EU) 2017/2400 is amended as follows: (1) in point 2, the following subpoint is added: ‘(18) ‘CFD’ means computational fluid dynamic simulation.’; (2) point 3 is replaced by the following: ‘3. Determination of air drag 3.0.1. The constant speed test procedure as set out in points 3.1 to 3.7 shall be applied to determine the air drag characteristics. During the constant speed test, the main measurement signals driving torque, vehicle speed, air flow velocity and yaw angle shall be measured at two different constant vehicle speeds (low and high speed) under defined conditions on a test track. The measurement data recorded during the constant speed test shall be processed in accordance with point 3.8 and entered into the air drag pre-processing tool in accordance with point 3.9 which determines product of drag coefficient by cross sectional area for zero crosswind conditions C ·A (0). The criteria that shall be met during the constant speed test procedure to d cr obtain valid results are described in point 3.10. 3.0.2. Air drag characteristics may also be determined by combining the C ·A (0) from a constant speed test with d cr an incremental difference ΔC ·A (0) CFD obtained by means of CFD. For this purpose, the following d cr requirements shall be met: (a) the applied CFD method shall be approved in accordance with Appendix 10. For all subsequent applications of the approved CFD method, the boundary conditions set out in point 1., subpoint i,. of subpoint (c) of Appendix 10 shall be complied with; (b) the application shall only be carried out for vehicles in which the vehicle configuration tested with a constant speed test and the vehicle configuration as analysed using CFD are permitted to be within the same air drag family as set out in point 4 of Appendix 5 for medium and heavy lorries and point 6 of Appendix 5 for heavy buses. The special cases as set out in point 2 of Appendix 5 shall also be taken into account; (c) the application of CFD shall be limited to positive values of ΔC ·A (0) ; d cr CFD (d) a C ·A (0) value generated using CFD shall not be higher than the highest value certified with the d cr method set out in point 3.0.1 for a vehicle meeting the same family criteria as set out in point 4.1 of Appendix 5 for medium and heavy lorries and point 6.1 of Appendix 5 for heavy buses. 3.0.3. The applicant for a certificate shall declare a value C ·A in a range from equal up to a maximum of + 0,2 d declared m2 higher than the air drag characteristics determined in accordance with points 3.0.1 and 3.0.2, if applicable. This tolerance shall take into account uncertainties in the selection of the parent vehicles as the worst case for all testable members of the family. The value C ·A shall be the reference value for conformity of the d declared certified CO emissions and fuel consumption related properties testing. 2 Several declared values C ·A can be created based on a single measured C ·A (0) as long as the family d declared d cr provisions in accordance with point 4.1 of Appendix 5 for medium and heavy lorries and with point 6.1 of Appendix 5 for heavy buses are fulfilled. 3.0.4. Vehicles which are not member of a family shall use the standard values for C ·A as described in d declared Appendix 7. In this case no input data on air drag shall be provided. The allocation of standard values shall be done automatically by the simulation tool.’; (3) point 3.2.2., the first sentence is replaced by the following: ‘3.2.2. The ambient temperature shall be in the range of 5 °C to 25 °C.’; (4) in point 3.2.5., subpoints (i) and (ii) are replaced by the following: ‘i. Average wind speed: ≤ 4 m/s ii. Gust wind speed (1s central moving average): ≤ 7 m/s’; ELI: http://data.europa.eu/eli/reg/2025/258/oj 47/105EN OJ L, 20.2.2025 (5) point 3.3.1.7. is replaced by the following: ‘3.3.1.7. Aftermarket parts which are not covered by the vehicle type approval in accordance with Regulation (EU) 2018/858 (e.g. sun visors, horns, additional head lights, signal lights, bull bars or ski-boxes) are not considered for the air drag in accordance with this Annex.’; (6) the following point is inserted after point 3.3.1.8.: ‘3.3.1.9. Vehicle equipment designed for the purpose of dynamic charging as defined in point 3(38) of Annex III shall be set in the ‘retracted’ state if both ‘extended’ and ‘retracted’ states are possible.’; (7) point 3.5.2. is replaced by the following: ‘3.5.2. The average speed within a measurement section in the high speed test shall be in the following range: maximum speed: 92 km/h for medium and heavy lorries and 102 km/h for heavy buses; minimum speed: 87 km/h for medium and heavy lorries and 97 km/h for heavy buses. If the vehicle is not able to run at such speed, the minimum speed shall be equal to 3 km/h less than the maximum vehicle speed the vehicle can be operated at the test track.’; (8) in point 3.5.3.1., subpoint (vii), the second indent is replaced by the following: ‘— Heavy buses and medium lorries of van chassis configuration: the maximum height of the vehicle shall be measured in accordance with the technical requirements of Regulation (EU) 2021/535, by not taking into account the devices and equipment referred to in Appendix 1.’; (9) in point 3.5.3.4., the following paragraph is added: ‘Any usage of the mechanical service brake during the parts of the test set out in this point and in point 3.5.3.5 invalidates the whole test. If specific vehicle settings are required to ensure that no activation of the service brake occurs during these parts, the manufacturer shall provide, upon request, the approval authority, the Commission, a market surveillance authority or a third party complying with the requirements of Regulation (EU) 2022/163 with the details of these settings to ensure that the test may be reproduced independently from the manufacturer.’; (10) point 3.5.3.5. is amended as follows: (a) subpoint vii. is replaced by the following: ‘vii. the maximum time for the low speed test shall not exceed 25 minutes in order to prevent cool down of the tyres’; (b) subpoint viii. is deleted; (11) point 3.5.3.8. is replaced by the following: ‘3.5.3.8. Second low speed test Perform the second measurement at the low speed directly after the high speed test. The same provisions as for the first low speed test shall be fulfilled.’; (12) point 3.11. is deleted; (13) in point 3.9, in Table 5 the following row is added: ‘Service brake <s_brake> [-] ≥ 4 Hz ‘Service brake demand pressure’ in accordance with ISO 11992-2:2014 (0=passive, 1=active)’ 48/105 ELI: http://data.europa.eu/eli/reg/2025/258/ojEN OJ L, 20.2.2025 (14) in Appendix 1, Section II, the last paragraph ‘Information package. Test report.’ is replaced by the following: ‘— Test reports from constant speed tests. — For air drag types generated using a CFD method: — Images of the vehicle focusing on the areas that are different with respect to the vehicle tested by constant speed test; — Raw data of the evolution curve of C ·A (0) versus iteration (for steady-state methods) or versus time D cr CFD (for transient methods), in *.csv format.’; (15) in Appendix 2, Part I, the following section is added: Attachment 2 to Information Document ‘Information on the application of the CFD method (if applicable) 1.1. CFD method licence number 1.2. Incremental difference ΔC ·A (0) as obtained by CFD’; d cr CFD (16) in Appendix 5 is amended as follows: (a) point 1 third sentence is replaced by the following: ‘The manufacturer may decide which vehicles belong to an air drag family as long as the membership criteria listed in point 4 for medium lorries, heavy lorries and point 6 for heavy buses are respected. The air drag family shall be approved by the approval authority.’; (b) the following point is inserted after point 4.3: ‘4.4. For vehicles equipped with dynamic charging technologies as referred to in Annex III, the following provisions shall apply: (a) Vehicles equipped with overhead pantographs shall be represented in the aerodynamic configuration with the overhead pantograph in the retracted position. (b) Vehicles equipped with trolley poles or devices related to ground-rail and wireless dynamic charging may be represented without the related devices that allow to perform dynamic recharging.’; (c) point 5.3 is deleted; (17) Appendix 6 is amended as follows: (a) in point 1, subpoint ii. is deleted; (b) in point 2 the following paragraph is added: ‘Notwithstanding the second paragraph, where the measured C A (0) value of all tests performed in d cr accordance with point 3.1 is higher than the C·A value declared for the parent vehicle plus 7,5 % d declared tolerance margin, the approval authority shall investigate whether the approved CFD method has been applied correctly for other air drag families with air drag characteristics determined in accordance with point 3.0.2. In case it was not applied correctly, Article 23 of this Regulation shall apply to all air drag types set out on the basis of the approved CFD method, or to the air drag types concerned if the approved CFD method has not been applied correctly only for some of them.’; (c) the following point is inserted after point 3: ‘3.1 Notwithstanding point 3, if the vehicle manufacturer has been using an approved CFD method for the purpose of determining air drag characteristics in accordance with point 3.0.2. of this Annex, additional vehicles shall also be tested for conformity with the certified CO emissions and fuel consumption related 2 properties in accordance with Table 17a. ELI: http://data.europa.eu/eli/reg/2025/258/oj 49/105EN OJ L, 20.2.2025 Table 17a Number of vehicles to be tested for conformity with the certified CO emissions and fuel consumption 2 related properties per year of production for the usage of the CFD method Number of vehicles produced for which Number of CoP tested vehicles Schedule air drag characteristics have been certified with the use of the approved CFD method 1 every 3rd year ≤ 1 000 1 every 2nd year 1 000< X ≤ 5 000 1 every year 5 000< X ≤ 15 000 2 every year 15 000< X ≤ 25 000 3 every year 25 000< X ≤ 50 000 4 every year 50 001and more’ (d) in point 4.6, the first sentence is replaced by the following: ‘For the tests referred to in point 3, the first vehicle to be tested for conformity with the certified CO emissions 2 and fuel consumption related properties shall be selected from the air drag type or air drag family representing the highest production numbers in the corresponding year.’; (e) the following point is inserted after point 4.6: ‘4.7. For the tests referred to in point 3.1, only vehicles for which air drag characteristics have been determined with an approved CFD method shall be selected.’; (18) in Appendix 9, Table 1 is amended as follows: (a) the following rows are inserted after the row ‘CdxA_0’: ‘DeltaCdxA_CFD P561 double, 2 [m2] Incremental difference ΔC ·A (0) obtained by d cr, CFD means of CFD as determined based on point 3.0.2 Only relevant if CFD option is applied Licence number CFD P562 token [-] Only relevant if CFD option is method applied DeltaCdxA_declared P563 double, 2 [m2] Difference between C ·A d declared in accordance with point 3.0.3 and ΔC ·A (0) in accordance d cr with point 3.0.1 or point 3.0.2, as the case may be.’ 50/105 ELI: http://data.europa.eu/eli/reg/2025/258/ojEN OJ L, 20.2.2025 (b) the row ‘TransferredCdxA’ is replaced by the following: ‘DeltaTransferredCdxA P564 double, 2 [m2] Delta CdxAfrom transfer to related families in other vehicle groups in accordance with Table 16 of Appendix 5 for heavy lorries, Table 16a of Appendix 5 for medium lorries and Table 16b of Appendix 5 for heavy buses. In case no transfer rule was applied CdxA_0 shall be provided. In the case of transfers by copying CdxA values from other vehicle groups, “0” shall be provided. If no transfer rule has been applied, leave empty.’ (c) the row ‘DeclaredCdxA’ is deleted; (19) the following Appendices are added after Appendix 9: ‘Appendix 10 Approval of the CFD method 1. For the determination of air drag characteristics using a CFD method as described in point 3.0.2, the validity of the CFD method shall be approved as described below. (a) The application of the CFD method shall be in accordance with Appendix 1 of Annex VIII to Regulation (EU) 2018/858. (b) The specific validation using physical tests shall be carried out based on two different vehicles “A” and “B”, of which B is the vehicle configuration with the lower air drag. A and B shall fulfil the following conditions: (i) For medium and heavy lorries, meet the criteria set out in point 4.1 of Appendix 5. The special cases as set out in point 2 of Appendix 5 shall also be taken into account. (ii) The difference in air drag between the two vehicles shall meet the following criterion: C•A ð0Þ + C•A ð0Þ ΔC d•Acrð0Þ CST >3;5 %• d cr CST;avg;A 2 d Cr CST;avg;B where: ΔC d•Acrð0Þ CST ¼ C d•Acrð0Þ CST; avg;A – C d•A Crð0Þ CST;avg;B C ·A (0) Average value of the air drag values of vehicle A measured in a d cr CST,avg,A series of constant speed tests according to the provisions in point 1(d). C ·A (0) Average value of the air drag values of vehicle B measured in a d cr CST,avg,B series of constant speed tests according to the provisions in point 1(d). ELI: http://data.europa.eu/eli/reg/2025/258/oj 51/105EN OJ L, 20.2.2025 (c) The manufacturer shall perform the following steps to determine the difference in air drag between A and B using CFD. (i) The following conditions shall be met in CFD simulations: (1) the vehicle geometries used in the CFD simulations shall correspond to the vehicle setup prescribed in point 3.3 for the constant speed test; (2) The air speed in the simulation shall be 90 km/h for lorries and 100 km/h for buses. (3) Only 0° yaw angle shall be considered. (4) All wheels (tyres and rims) shall be modelled as rotating elements (either rotating boundary conditions or real rotating components) with the corresponding rotational speed. (5) The ground of the simulation domain shall be modelled with a tangential velocity opposite to the vehicle advancing direction. (6) The simulation domain shall be discretised with a minimum of 60 million volume elements, including the corresponding mesh refinements at wake regions and other key aerodynamic areas. (7) In the case of using steady-state CFD methods, the simulation shall run for a minimum of 2 000iterations. (8) In the case of using transient CFD methods, the simulations shall run for a minimum of 10 seconds of simulation time. (ii) The incremental difference ΔC ·A (0) between vehicles A and B using the CFD method shall be d cr CFD calculated as: ΔC ·A (0) = C ·A (0) - C ·A (0) d cr CFD d cr CFD, A d cr CFD, B where C ·A (0) corresponds to the average of: d cr CFD — the last, at least, 400 iterations in the case of steady-state methods — the last, at least, 5 seconds of simulation time in the case of transient methods. (iii) The ΔC ·A (0) value shall be submitted to the approval authority before starting the constant d cr CFD speed tests as set out in point (d). (d) For both vehicle A and B a reference value for the air drag characteristics, respectively C ·A (0) and d cr CST,avg,A C ·A (0) shall be determined on the basis of a series of constant speed tests. For this purpose, the d cr CST,avg,B following points shall be considered: (i) The reference value for C ·A (0) shall be calculated as the arithmetic mean of the C ·A (0) d cr CST,avg d cr values from all available constant speed tests performed with a given vehicle. Only valid results CST in accordance with point 3.10. shall be taken into consideration. It is not permitted to exclude available and valid constant speed test results for the vehicle configuration under consideration from the evaluation unless this can be justified to the approval authority. 52/105 ELI: http://data.europa.eu/eli/reg/2025/258/ojEN OJ L, 20.2.2025 (ii) The 95 % confidence interval (CI ) of the mean of test data, C ·A (0) , shall fall within the 95 d cr CST,avg range C ·A (0) ± 2,5 % ,which is determined by the following expression: d cr CST,avg � � pSffiffiffi •t≤ 0,025 •x n Where: s is the standard deviation of the sample for C ·A (0) , defined as follows: d cr CST rffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffi s¼ 1 ∑n ðx – xÞ2 n – 1 i¼1 i xis the mean average value of the sample for C ·A (0) , defined as follows d cr CST x ¼1 ∑n x n i¼1 i n is the number of constant speed tests for the considered vehicle configuration x is the air drag value C ·A (0) obtained from a single constant speed test i d cr CST t is the score for the 95 % confidence interval of the double-sided t-distribution, as set out in Table 1 Table 1 # tests t 3 4,303 4 3,182 5 2,776 6 2,571 7 2,447 8 2,365 9 2,306 10 2,262 11 2,228 (iii) A minimum of three valid constant speed tests shall be performed for each vehicle configuration and taken into account in the calculation. (iv) If the criterion set out in point (ii) of this subparagraph is not met, additional constant speed tests shall be performed. (v) If the criterion set out in point (ii) of this subparagraph is not reached after performing eleven valid constant speed tests, all the tests shall be considered void for this vehicle configuration and may not be used for the purpose of this Appendix. (vi) The reference value for the difference in air drag between the two vehicles ΔC ·A (0) shall be d cr CST calculated as follows: ΔC ·A (0) = C ·A (0) - C ·A (0) d cr CST d cr CST,avg,A d cr CST,avg,B ELI: http://data.europa.eu/eli/reg/2025/258/oj 53/105EN OJ L, 20.2.2025 (e) The compliance of the CFD method shall be demonstrated by fulfilling the following criterion: ΔC D•Acrð0Þ CST – TOL<ΔC D•Acrð0Þ CFD < ΔC D•Acrð0Þ CST + TOL Where C •A ð0Þ + C •A ð0Þ TOL¼ 0;035· D cr CST;avgA D cr CST;avgB 2 2. The application for approval of the CFD method shall be accompanied by the following information for each vehicle A and B: (a) CFD software used including version number information (b) Values for C ·A (0) in m2 D cr CFD (c) The SHA256 hash of the CFD simulation file, including geometry data, mesh and physics settings, domain discretisation, boundary conditions and flow field results. If this information is split into several files by the software used, then these files shall be stored under a single compressed file (e.g. *.zip or equivalent) and the SHA256 hash shall correspond to this single compressed file. All simulation set up parameters such as the mesh or the technical parameters necessary to reproduce the simulation, along with the associated version of the CFD tool, shall be kept by the manufacturer for 10 years and the manufacturer shall reproduce the simulation at the request of the approval authority. (d) Raw data of the evolution curve of C ·A (0) versus iteration (for steady-state methods) or versus time D cr CFD (for transient methods), in *.csv format. (e) Post-processing images of the CFD simulations according to the principles as illustrated by Figures 3 to 6 in Annex V of Implementing Regulation (EU) 2022/1362 (f) Values for C ·A (0) and C ·A (0) D cr CST D cr CST,avg (g) Air drag information document as set out in Appendix 2 to this Annex accompanied by test reports for each valid constant speed test 3. The approval of the CFD method shall be carried out separately for application on lorries and on buses. 4. If the compliance of the CFD method is demonstrated in accordance with points 1 and 2, the approval authority shall issue a licence in the form of the document as set out in Appendix 11. 5. The approval of the CFD method shall be renewed in any of the following cases: (a) a change is made to the CFD method that could potentially affect the validity of the results (b) After 5 years of approval of the CFD method (c) At the request of the approval authority If the approval of the CFD method is not renewed, the approval of the CFD method shall be considered withdrawn, and the CFD method shall no longer be used for the purpose of this Annex. Within the first 5 years of initial approval, any renewal of the approval of the CFD method may use the original set of data from constant speed testing. After that, a new set of test data performed on different vehicles, if such vehicles exist, shall be provided for the renewal of the approval of the CFD method. 54/105 ELI: http://data.europa.eu/eli/reg/2025/258/ojEN OJ L, 20.2.2025 Appendix 11 MODEL OF A LICENCE TO APPLY A CFD METHOD FOR AIR DRAG DETERMINATION Maximum format: A4 (210 × 297 mm) LICENCE TO APPLY A CFD METHOD FOR AIR DRAG DETERMINATION Communication concerning: Administration stamp — granting(1) — refusal(1) — withdrawal(1) (1) delete if not applicable of the licence to apply a CFD method with regard to air drag determination in accordance with Annex VIII to Regulation (EU) 2017/2400. CFD method licence number (following the numbering system set out in point 2 of Appendix 8, with the exception of the additional letter to section 3 ‘P’ replaced by ‘CFD’): Reason for refusal / withdrawal: SECTION I 0.1. Name and address of the manufacturer: 0.2. Vehicles covered by licence (lorries, buses): 0.3. CFD software used including version number information 0.4. SHA256 hashes in accordance with point 2. item (c) of this Appendix SECTION II 1. Approval authority responsible for the assessment 2. Date of the assessment report 3. Number of the assessment report 4. Remarks (if any) 5. Place 6. Date 7. Signature Attachments (for each vehicle configuration A and B) 1. Raw data of the evolution curve of C ·A (0) D cr CFD 2. Post-processing images of the CFD simulations 3. Air drag information document Test reports for each valid constant speed test’. ELI: http://data.europa.eu/eli/reg/2025/258/oj 55/105EN OJ L, 20.2.2025 ANNEX VIII Annex IX to Regulation (EU) 2017/2400 is amended as follows: (1) point 2 is amended as follows: (a) point (33) is replaced by the following: ‘(33) ‘ratio compressor to engine’ means the forward gear ratio of the air compressor to the speed of the engine without slip (pneumatic system);’; (b) point (63) is replaced by the following: ‘(63) ‘R-744 heat pump’ means a continuous (i.e. electrically driven) heat pump which uses R-744 refrigerant as working medium (HVAC system);’; (2) in point 3.3.2, in Table 7, in row ‘Alternator’, in sub-row ‘Alternator Technology’, in column ‘Explanations’ the last sentence is replaced by the following: ‘For PEV or FCHV no input is required.’; (3) in point 3.4.1.2, in Table 10, the ‘Compressor clutch (P311)’ column is replaced by the following: ‘none none none none visco visco visco visco mechanically mechanically mechanically mechanically None none’ (4) in point 3.5.2, Table 14 is amended as follows: (a) in the rows ‘Heat pump type for cooling driver compartment’ to ‘Heat pump type for heating passenger compartment’, in the column ‘Explanations’ the following text is added: ‘For PEV and FCHV only continuous (i.e. electrically driven) heat pump types are allowed inputs (i.e. ‘R-744’ or ‘non R-744 continuous’).’; (b) in the rows ‘Water electric heater’ to ‘Other heating technology’, in the column ‘Explanations’ the text is replaced by the following: ‘Input to be provided only for HEV, FCHV and PEV.’; 56/105 ELI: http://data.europa.eu/eli/reg/2025/258/ojEN OJ L, 20.2.2025 (5) point 3.6 is amended as follows: (a) ‘Table 12’ is renamed to ‘Table 15’; (b) the paragraph after Table 15 is replaced by the following: ‘In the case of multiple PTOs mounted to the transmission, only the component with the highest losses in accordance with Table 15, for its combination of criteria ‘PTOShaftsGearWheels’ and ‘PTOShaftsOther­ Elements’, shall be declared. For medium lorries and heavy buses, no declaration of transmission PTOs is foreseen.’. ELI: http://data.europa.eu/eli/reg/2025/258/oj 57/105EN OJ L, 20.2.2025 ANNEX IX Annex Xa to Regulation (EU) 2017/2400 is amended as follows: (1) in point 1, the first, the second and the third paragraphs are replaced by the following: ‘This Annex sets out the requirements for the verification testing procedure, which is the test procedure for verifying the CO emissions of new heavy-duty vehicles. 2 The verification testing procedure consists of an on-road test to verify the CO emissions of new vehicles after 2 production. It shall be carried out by the vehicle manufacturer and supervised by the approval authority that granted the licence to operate the simulation tool. In case of heavy buses the verification testing procedure shall be performed by the manufacturer of the primary vehicle. During the verification testing procedure the torque and speed at the driven wheels, the engine speed, the fuel consumption, the pollutant emissions and the other relevant parameters listed in point 6.1.6 shall be measured. The measured data shall be used as input to the simulation tool, which uses the vehicle-related input data and the input information from the determination of the CO emissions and fuel consumption of the vehicle. For the 2 verification testing procedure simulation, the instantaneously measured wheel torque and the rotational speed of the wheels as well as the engine speed shall be used as input. To pass the verification testing procedure the CO 2 emissions calculated from the measured fuel consumption shall be within the tolerances set out in point 7 compared to the CO emissions from the verification testing procedure simulation. Figure 1 gives a schematic 2 picture of the verification testing procedure method. The evaluation steps as performed by the simulation tool in the verification testing procedure simulation are described in Appendix 1 of this Annex.’; (2) in point 2, point (4) is replaced by the following: ‘(4) “actual mass of the vehicle for VTP” is the actual mass of the vehicle as defined in Article 2(6) of Regulation (EU) 2021/535, but with a full tank and plus the additional measurement equipment as set out in point 5, plus the actual mass of the trailer or semitrailer in accordance with 6.1.4.1;’; (3) point 3 is amended as follows: (a) points (b) and (c) are replaced by the following: ‘(b) The vehicle selection shall be made by the approval authority that granted the licence to operate the simulation tool based on proposals from the vehicle manufacturer. In case of heavy buses, the selection shall be made by the approval authority that granted the licence to operate the simulation tool to the primary vehicle manufacturer. (c) Only vehicles with one driven axle shall be selected for the verification test. Hybrid electric, pure electric and fuel cell hybrid vehicles shall not be selected for the verification test.’; (b) in Table 1, table notes (*) and (**) are replaced by the following: ‘(*) The VTP shall be performed within the first two years. (**) The total of all heavy lorries, medium lorries and primary buses produced by a manufacturer falling within the scope of this regulation is to be considered and medium lorries, heavy lorries and heavy buses need to be covered by the VTP over a six-year time span.’; (c) point (e) is replaced by the following: ‘(e) Vehicles which do not use standard values for CO certification of their components, separate technical 2 units or systems instead of measured values for the transmission and for the axle losses shall be preferably tested. In case no vehicles comply with the requirements set out in points (a) to (c), only the verification of the input information and input data and data handling shall be performed in accordance with point 6.1.1.’; 58/105 ELI: http://data.europa.eu/eli/reg/2025/258/ojEN OJ L, 20.2.2025 (4) in point 4, the first paragraph is replaced by the following: ‘Each vehicle for the verification test shall be in the condition resembling its intended placing on the market. No changes in hardware such as lubricants or in the software such as auxiliary controllers are allowed. The tyres may be replaced by measurement tyres of a diameter that shall not exceed ± 10 % of the diameter of the original tyre.’; (5) in point 5.6, the following paragraph is added: ‘For heavy buses the status of the compressor of the pneumatic system shall be recorded. Phases where pressurised air is delivered to the reservoir shall be labelled in the measurement data according to the provisions as given in Table 4 of this Annex. The compressor status shall be monitored either via recording of the system pressure or via available CAN signals.’; (6) in point 5.7, second indent, the formula, the entry ‘β’ is replaced by the following: ‘β = 0,001 [K–1] (Temperature correction factor)’ (7) in point 5.9, in Table 2, the row ‘Wheel torque’ is replaced by the following: ‘Wheel torque For 10 kNm calibration (over the entire calibration range): < 0,1 s i. Non linearity(1): < ± 40 Nm for heavy lorries and heavy buses < ± 30 Nm for medium lorries ii. Repeatability(2): < ± 20 Nm for heavy lorries and heavy buses < ± 15 Nm for medium lorries iii. Crosstalk: < ± 20 Nm for heavy lorries and heavy buses < ± 15 Nm for medium lorries (only applicable for rim torque meters) iv. Measurement rate: ≥ 20 Hz (1) Non linearity means the maximum deviation between ideal and actual output signal characteristics in relation to the measured value in a specific measuring range. (2) Repeatability means closeness of the agreement between the results of successive measurements of the same measured value carried out under the same conditions of measurement.’ (8) the following points are inserted after point 5.11: ‘5.12. Distance travelled If the vehicle is equipped with an on-board device for the monitoring and recording of fuel and/or energy consumption and mileage of motor vehicles, in accordance with the requirements referred to in point (b) of Article 5c of Regulation (EC) No 595/2009, the mileage shall be recorded from the device. 5.13. Engine fuel rate If the vehicle is equipped with an on-board device for the monitoring and recording of fuel and/or energy consumption and mileage of motor vehicles, in accordance with the requirements referred to in point (b) of Article 5c of Regulation (EC) No 595/2009, the instantaneous value of the engine fuel rate as well as the total fuel consumed at test start and end shall be recorded from the device. 5.14. Vehicle total mass If the vehicle is equipped with an on-board mass-monitoring device for determining and recording the payloads or total weight of vehicles, in accordance with the requirements referred to in point (b) of Article 5c of Regulation (EC) No 595/2009, the instantaneous value of the vehicle total mass shall be recorded from the device.’; ELI: http://data.europa.eu/eli/reg/2025/258/oj 59/105EN OJ L, 20.2.2025 (9) in point 6.1.1, the following subparagraph is added: ‘In case of heavy buses the primary vehicle manufacturer shall make available the input information and input data as well as the manufacturer’s records file and the completed vehicle manufacturer shall make available the vehicle information file and the customer information file.’; (10) point 6.1.1.1 is amended as follows: (a) in point (c), the first paragraph is replaced by the following: ‘Engine torque limitations declared in the input to the simulation tool shall be subject to a verification in the VTP if they are declared for any of the highest 50 % of the gears (e.g. for any of the gears 7 to 12 of a 12-gear transmission) and if one of the following cases applies:’; (b) point (e)(vii) is replaced by the following: ‘(vii) air drag;’; (11) point 6.1.1.2 is replaced by the following: ‘6.1.1.2 Verification of the vehicle mass If requested by the approval authority that granted the licence to operate the simulation tool, the determination of masses by the manufacturer shall be verified in accordance with point 2 of Section G of Part 2 of Annex VIII of Regulation (EU) 2021/535. Where that verification fails, the corrected actual mass as defined in point 2(4) of Annex III to this Regulation shall be determined. In the case of heavy buses, the mass of the completed vehicle shall be verified.’; (12) in point 6.1.4.1. the following paragraph is added: ‘Heavy buses of the vehicle groups defined in Table 4, 5 and 6 of Annex I shall be tested with the final bodies of the complete or completed vehicle.’; (13) in point 6.1.4.2, the second paragraph is replaced by the following: ‘For heavy lorries of groups 1s, 1, 2 and 3, medium lorries and for heavy buses the payload shall be in the range of 55 % to 75 % of the maximum authorised weight in accordance with 96/53/EC for the specific vehicle or vehicle combination.’; (14) point 6.1.4.4 is replaced by the following: ‘6.1.4.4 Settings for auxiliaries All settings influencing the auxiliary energy demand shall be set to minimum reasonable energy consumption where applicable. The air conditioning shall be switched off and venting of the cabin or the driver compartment shall be set lower than medium mass flow. Additional energy consumers not necessary to run the vehicle shall be switched off. External devices to provide energy on board, such as external batteries, are allowed only for running the extra measurement equipment for the verification testing procedure listed in Table 2, but shall not provide energy to vehicle equipment that will be present when placing the vehicle on the market. In case of heavy busses, door opening and kneeling at stops shall not be considered in the verification test.’; (15) in point 6.1.5.5, the following paragraphs are added: ‘If the vehicle is equipped with fuel-powered auxiliary heaters, only the fuel consumption of the internal combustion engine shall be measured. Where applicable, the recording of the vehicle total mass and engine fuel rate signals as determined by the OBFCM device shall start latest once the fuel consumption measurement has started and end together with the fuel consumption measurement. The lifetime values of the mileage and total fuel consumption, as determined by the OBFCM device, shall be recorded at the start of the fuel consumption measurement and at the end of the OBFCM fuel consumption measurement.’; 60/105 ELI: http://data.europa.eu/eli/reg/2025/258/ojEN OJ L, 20.2.2025 (16) point 6.1.5.7 is amended as follows: (a) the first paragraph is replaced by the following: ‘The boundary conditions to be met for a valid verification test are set in Tables 3 to 3d.’; (b) the third paragraph is deleted; (c) the following tables are added: ‘Table 3c Parameters for a valid verification test for high floor heavy buses No Parameter Min. Max. 4 Distance based share urban driving 12 % 40 % 5 Distance based share rural driving 10 % 30 % 6 Distance based share motorway driving 30 % - 7 Time share of idling at stand still - 10 % Table 3d Parameters for a valid verification test for low floor heavy buses No Parameter Min. Max. 4 Distance based share urban driving 75 % 90 % 5 Distance based share rural driving 10 % 25 % 6 Distance based share motorway driving - 0 % 7 Time share of idling at stand still - 10 %’ (17) point 6.1.6, Table 4 is amended as follows: (a) the following row is inserted after the row ‘fuel flow’: ‘Compressor [-] <PS_comp_active> 1 = active (compressor delivering to pneumatic system), pneumatic system 0 = not active this input data is only relevant for heavy status buses’ (b) in row ‘CO mass flow’, in column ‘Heading input data’ the following text is inserted: 2 ‘<CO >’; 2 (c) the following rows are added: ‘OBFCM mileage [km] <ml_obfcm> Mileage in accordance with point 5.12 (if applicable) OBFCM engine [g/s] <fcm_obfcm> Engine mass fuel rate in accordance with point 5.13 (if mass fuel rate applicable) OBFCM engine [l/s] <fcv_obfcm> Engine volume fuel rate in accordance with point 5.13 volume fuel rate (if applicable) OBFCM vehicle [kg] <m_obfcm> Vehicle total mass in accordance with point 5.14 (if total mass applicable)’ ELI: http://data.europa.eu/eli/reg/2025/258/oj 61/105EN OJ L, 20.2.2025 (18) the following point is inserted after point 6.1.6: ‘6.2. Additional verifications For heavy buses, the correspondence of the tested vehicle with the following parameters shall be verified: i. Technical Permissible Maximum Laden Mass ii. Vehicle code iii. Class of vehicle iv. Low entry (if applicable) v. Number of passenger seats vi. Height of the integrated body’; (19) point 7.1 is replaced by the following: ‘7.1 Input to the simulation tool The following inputs to the simulation tool shall be made available: Input data and input information; (a) In case of medium and heavy lorries (i) Manufacturer's records file; (ii) Customer information file; (iii) Processed measurement data in accordance with Table 4; (iv) Further information in accordance with Table 4a. (b) In case of heavy buses (v) Input data and input information as defined for the primary heavy bus; (vi) Manufacturers records file for the primary heavy bus; (vii) Vehicle information file for the primary vehicle; (viii) Customer information file for the completed vehicle; (ix) Vehicle information file for the completed vehicle; (x) Processed measurement data according to Table 4; (xi) Further information according to Table 4a.’; (20) in point 7.2.1, the following paragraph is inserted after the first paragraph: ‘For heavy buses the vehicle information file and the customer information file of the completed vehicle shall also be verified.’; (21) point 7.3 is replaced by the following: ‘7.3. Pass/Fail check The vehicle shall pass the verification test if the C ratio determined in accordance with 7.2.2. is equal or VTP smaller than the tolerance set out in Table 5. For a comparison with the declared CO emissions of the vehicle in accordance with Article 9, the verified 2 CO emissions of the vehicle shall be determined as follows: 2 CO = C × CO 2verified VTP 2declared where: CO = verified CO emissions of the vehicle in [g/t-km] for medium and heavy 2verified 2 lorries and in [g/pkm] for heavy buses CO = declared CO emissions of the vehicle in [g/t-km] for medium and heavy 2declared 2 lorries and in [g/pkm] for heavy buses 62/105 ELI: http://data.europa.eu/eli/reg/2025/258/ojEN OJ L, 20.2.2025 If a first vehicle does not meet the pass criterion for the verification testing procedure as set out in Table 5, up to two additional tests shall be performed on the same vehicle or two more similar vehicles may be tested on request of the vehicle manufacturer. For the evaluation of the pass criterion set out in Table 5, the arithmetic average of the C ratios obtained from all the tests performed shall be used. If the pass criterion VTP is not reached, the vehicle fails the verification testing procedure. Table 5 Pass criterion for the verification test Pass criterion for the verification testing procedure C ratio ≤ 1,075 VTP Where C is lower than 0,925, the results need to be reported to the Commission for further analysis to VTP determine the cause.’; (22) point 8.1.1 is replaced by the following: ‘8.1.1. Name and address of the vehicle manufacturer(14) _____________ (14) For heavy buses only primary vehicle manufacturer’; (23) point 8.2.3 is replaced by the following: ‘8.2.3. Vehicle category (N , N , M )’; 2 3 3 (24) the following point is added after point 8.13.14.7.: ‘8.13.14.8. CO (g/kWh)’; 2 (25) the following points are inserted after point 8.13.14.7: ‘8.13.15 OBFCM values in the verification test (if applicable) 8.13.15.1 OBFCM mileage reading at test start of the fuel consumption measurement from the signal referred to in point 5.12 (km) 8.13.15.2 OBFCM mileage reading at test end of the fuel consumption measurement from the signal referred to in point 5.12 (km) 8.13.15.3 OBFCM total mass fuel consumed from the lifetime signal referred to in point 5.13 at the beginning of the fuel consumption measurement (kg) 8.13.15.4 OBFCM total mass fuel consumed from the lifetime signal referred to in point 5.13 at the end of the fuel consumption measurement (kg) 8.13.15.5 OBFCM total volume fuel consumed from the lifetime signal referred to in point 5.13 at the beginning of the fuel consumption measurement (l) 8.13.15.6 OBFCM total volume fuel consumed from the lifetime signal referred to in point 5.13 at the end of the fuel consumption measurement (l) 8.13.15.7 OBFCM accumulated engine mass fuel rate values from the instantaneous signal referred to in point 5.13 (kg) 8.13.15.8 OBFCM accumulated engine volume fuel rate values from the instantaneous signal referred to in point 5.13 (l) 8.13.15.9 OBFCM average total mass from the signal referred to in point 5.14 (kg) 8.13.15.10 odometer reading at test end of the fuel consumption measurement (km) 8.13.15.11 total mass fuel consumption value in the verification test measured (kg) 8.13.15.12 total volume fuel consumption value in the verification test measured (l)’; ELI: http://data.europa.eu/eli/reg/2025/258/oj 63/105EN OJ L, 20.2.2025 (26) in Appendix 1, in Part A, point 3 is replaced by the following: ‘3. Determination of the brake specific fuel consumption simulated by the simulation tool (BSFC ) sim In the verification test mode of the simulation tool the measured wheel power is applied as input to the backward simulation algorithm. The gears engaged during the verification test are determined by calculating the engine speeds per gear at the measured vehicle speed and selecting the gear that provides the engine speed closest to the measured engine speed. For APT transmissions during phases with active torque converter, the actual gear signal from the measurement is used. The loss models for axle gear, angle drive, retarders, transmissions and PTOs are applied in a similar way as in the declaration mode of the simulation tool. For power demand of auxiliary units concerning steering pump, pneumatic system, electric system and HVAC system the generic values as implemented per technology in the simulation tool are applied. For heavy buses the recorded signal of the pneumatic system compressor status is also taken into account. For calculation of the power demand of the engine cooling fan the following formulas are applied: Case (a) non-electrically driven engine cooling fans: � n � 3 � D � 5! P ¼C1• fanðtÞ • fan •C4 fanðtÞ C2 C3 where: P = power demand engine cooling fan [kW] fan t= time node [s] n = measured rotational speed of the fan [rpm] fan D = diameter of the fan [mm] fan C1= 7,32 kW C2= 1 200rpm C3= 810 mm C4= for heavy buses, the factor set out in Table 6, for other vehicle categories it is equal to 1 Table 6 C4 factors for calculation of engine cooling fan power demand for heavy buses Fan drive cluster Fan control C4 Crankshaft mounted Electronically controlled visco clutch 1,05 Bimetalic controlled visco clutch 1,05 Discrete step clutch coupling, 2 stages (0 % / stage 1 / stage 2) 1,05 Discrete step clutch coupling, 3 stages (0 % /stage 1/ stage 2 / stage 3) 1,05 On/off clutch 1,05 Belt driven or via transmission Electronically controlled visco clutch 1,11 Bimetalic controlled visco clutch 1,11 Discrete step clutch coupling, 2 stages (0 % / stage 1 / stage 2) 1,11 Discrete step clutch coupling, 3 stages (0 % /stage 1/ stage 2 / stage 3) 1,11 On/off clutch 1,11 Hydraulically driven Variable displacement pump 1,75 Constant displacement pump 2,25 64/105 ELI: http://data.europa.eu/eli/reg/2025/258/ojEN OJ L, 20.2.2025 Case (b) electrically driven engine cooling fans: P = P . 1,43 fan(t) el(t) P = power demand engine cooling fan [kW] fan t = time node [s] P = electrical power at the terminals of the engine cooling fan(s) as measured in accordance with el point 5.6.1. In the case of vehicles with engine stop-start events during the verification test, similar corrections for auxiliary power demand and energy to re-start the engine as applied in the declaration mode of the simulation tool are applied. The simulation of the engines instantaneous fuel consumption FC is performed for each 0,5 second time sim(t) interval as follows: — Interpolation from the engine fuel map using measured engine speed and resulting engine torque from the backward calculation including engines rotational inertia calculated from measured engine speed; — The engine torque demand as determined above is limited to the certified engine full-load capabilities. For those time intervals the wheel power in the backward simulation is reduced accordingly. In the calculation of BSFC sim as set out below this simulated wheel power trace (P ) is taken into consideration. wheel,sim(t) — A WHTC correction factor is applied corresponding to the allocation of urban, rural and motorway based on the definitions as given in point 2(8) to 2(10) and the measured vehicle speed. The brake specific fuel consumption calculated by the simulation tool BSFC as applied in 7.2.2 for calculation of m-c the C factor is calculated as follows: VTP � � ∑tendFC •Δt + FC BSFC ¼ tstart simðtÞ ESS;corr sim W wheel;pos;sim where: BSFC = brake specific fuel consumption determined by the simulation tool for the sim verification test [g/kWh] t = time node [s] FC = engines instantaneous fuel consumption [g/s] sim Δt = time increment duration = 0,5 [s] FC = correction of fuel consumption regarding auxiliary power demand resulting from ESS,corr engine stop start (ESS) as applied in the declaration mode of the simulation tool [g] W = positive wheel work determined by the simulation tool for the verification test wheel,pos,sim [kWh] � � max P ;0 t wheel;simðtÞ W wheel;pos;sim ¼∑ te stn ad rt 3 600•fs fs = Simulation rate = 2 [Hz] P = Simulated wheel power for the verification test [kW] wheel,sim In the case of dual-fuel engines, BSFC is determined for both fuels separately.’ sim ELI: http://data.europa.eu/eli/reg/2025/258/oj 65/105EN OJ L, 20.2.2025 ANNEX X Annex Xb to Regulation (EU) 2017/2400 is amended as follows: (1) in point 2, the following points are added: ‘(54) ‘FCS UUT’ means the fuel cell system (‘FCS’) or representative fuel cell (‘FC’) subsystem to be actually tested. (55) ‘balance of plant’ or ‘BoP’ means the assembly of all the supporting components and auxiliary systems of an FCS needed to deliver the energy, other than the generating unit itself. These may include transformers, inverters, supporting structures etc., depending on the type of plant. (56) ‘BoP-component’ or ‘BoPC’ means a component that belongs to a BoP. (57) ‘air processing sub-system’ or ‘APS’ means an assembly of components that delivers air (oxygen containing media) for reaction in the FCS. The APS can provide air as required to (a) the fuel processing sub-system; (b) thermal management sub-system (TMS); and (c) fuel cell stack-sub-system (FCSS). The APS may include filtration, purification, compression, humidification as well as flow control components. (58) ‘fuel processing sub-system’ or ‘FPS’ means the assembly of components that chemically or physically converts the supplied fuel to a form suitable for use in the fuel cell stack sub-system. The fuel processing sub-system may include pressure regulation, humidification, and mixing components. The fuel processing sub-system also may be referred to as the fuel processor subsystem or the fuel processor. (59) ‘thermal management sub-system’ or ‘TMS’ means the assembly of components that provides both thermal and water management for the FCS. The thermal management sub-system may include an accumulator, pump, radiator, and/or condenser. It may also provide water recovery and process humidification functions. (60) ‘fuel cell stack sub-system’ or ‘FCSS’ means the assembly containing one or more fuel cell stacks in which by means of an electrochemical reaction between fuel and oxidant chemical energy is transferred into electric energy. The FCSS generally includes connections for conducting fuel, oxidant, and exhaust; electrical connections for the power delivered by the stack sub-system; and means for monitoring electrical loads, which are for interface to the FCS. Additionally, the FCSS may incorporate means for conducting additional fluids (e.g., cooling media, inert gas), means for detecting normal and/or abnormal operating conditions, enclosures or pressure vessels, and ventilation systems. The FCSS is also known as a fuel cell module, fuel cell power module, or fuel cell stack assembly. (61) ‘fuel cell control sub-system’ means a system that controls and/or monitors FCS conditions and automatically responds to vehicle power demands while preventing hazardous conditions and damage to the FCS. The automatic control system generally includes a microprocessor-based device with input and output functions and may provide a diagnostic or troubleshooting function. (62) ‘power distribution sub-system’ (PDS) means the collection of components that connects the FCSS to the power conditioning system and that converts power for FCS use. The power distribution sub-system may include cables, switches and/or contactors and/or relays, buses, other connectors, and instrumentation. The PDS has only DC power as input. (63) ‘fuel cell system’ or ‘FCS’ means an energy converter which transforms chemical energy into electric energy via in series connected electrochemical cells, referred to as a fuel cell stack. The FCS includes all necessary balance of plant components to provide fuel, oxygen (e.g. in form of air), cooling and media conditioning to ensure a sound operation of the FC-stacks. Different configurations of FCS are known, also referred to as different types or variants, the relevant types are described in Table 9. 66/105 ELI: http://data.europa.eu/eli/reg/2025/258/ojEN OJ L, 20.2.2025 (64) ‘power conditioning system’ or ‘PCS’ means the collection of components that converts the electric energy generated by the fuel cell stack(s) into electricity useful for vehicle purposes. The PCS includes at least a voltage regulator (DC/DC) and/or voltage converters (DC/AC). It might be connected to the cooling media loop. It provides the interface between the FCS and the battery and other electrical vehicle loads. (65) ‘water treatment sub-system’ or ‘WTS’ means the assembly of components that provides the treatment necessary for the process water used in the fuel cell system (FCS). For example, the WTS may include a demineralizing / deionizing resin bed and instrumentation and may provide water recovery and process humidification functions. (66) ‘inner cooling loop’ or ‘ICL’ means in FCS with a split of inner (primary) and outer (secondary) cooling loops of BoPC, a closed coolant loop that is connected to the cooling media of the different BoPC and is integrated into the FCS as part of the TMS. Multiple inner cooling loops may exist inside an FCS, e.g. one for the power electronics (PDS, PCS) and one for the FCSS. (67) ‘outer cooling sub-system’ means the collection of components to exchange waste heat of the FCS, which is stored inside the cooling fluid, with the environment. It may include radiators, pumps, fans and other actuators. (68) ‘external electric components’ means all electric components that are not part of the FCS and / or are electrically not connected to the DC power between FCSS and PCS. These include the electric machines of the powertrain and the REESS. (69) ‘relative transition slope’ or ‘RTS’ means a coefficient that express the change rate of the set-point for the electric power output of the FCS. RTS puts into relation the change in time against the upper electric power output of the FCS. (70) ‘system conditioning operating point’ or ‘SCOP’ means a setpoint for the electrical power output of the system that is suited to condition the FCS in the specified duration of the conditioning phase. (71) ‘setpoint’ or ‘SP’ means the desired or target value for an essential variable, or process value of a system. (72) ‘process value’ or ‘process variable’ or ‘PV’ is the current measured value for an essential variable, or process value of a system.’; (2) in point 3.1, in Table 1, the following rows are inserted after the row ‘Torque’: ‘Fuel mass flow(*) 1,0 % of the analyzer reading or 0,5 % of max. calibration(2) whichever is larger Air/oxidant mass 1,0 % of the analyzer reading or 0,5 % of max. calibration(2) whichever is larger flow(1) Cooling liquid mass 2,5 % of the analyzer reading or 0,1 % of max. calibration(2) whichever is larger flow Cooling liquid 2,5 % of the analyzer reading or 0,1 % of max. calibration(2) whichever is larger volume flow Cooling liquid 0,5 % of the analyzer reading or 0,1 % of max. calibration(2) whichever is larger pressure Fuel, ambient, air 1 kPa pressure (*) If volume flow is metered, the accuracy shall be transferred as accuracy of mass flow measurement.’; ELI: http://data.europa.eu/eli/reg/2025/258/oj 67/105EN OJ L, 20.2.2025 (3) in point 3.1, in Table 1, the following row is inserted after the row ‘Temperature’: ‘Dew point ±2,5 K of the analyzer reading or 1,0 % of max. calibration (2) whichever is larger’ temperature (4) the following points are inserted after point 3.2: ‘3.2.1 Data recording for the purpose of FCS-certification For the purpose of FCS-certification the sampling frequency shall be constant with a sample frequency of at least 10 Hz for all values. 3.2.2 Sign convention of energy and media exchange over UUT-boundary for the purpose of FCS-certification The flow of media or energy that is leaving the UUT shall have a negative sign and vice-versa.’; (5) in point 4.1.3, the following paragraph is added: ‘The voltage for unlimited operating capability shall be a representative voltage range typically applied in real vehicles and shall not necessarily reflect the technically minimum/maximum allowed input voltage to the UUT, and shall not reflect extreme boundary conditions where the operating capabilities of the UUT are limited by high-level vehicle control that is not part of the actual UUT control logics (e.g. reduction of available propulsion torque of UUT due to limitations in the vehicle’s REESS).’; (6) the following point is inserted after point 4.1.8.4: ‘4.1.8.5 Installation requirements The installation of the UUT on the test bed shall be done with an angle of inclination as for installation in the vehicle according to the homologation drawing ±1°. Alternatively, it shall be installed at 0°±1° on the test bed for covering all different installation variants in the vehicle.’; (7) point 4.2.2 is amended as follows: (a) the second paragraph is replaced by the following: ‘For IEPC with multispeed gearbox the test shall be performed in accordance with the following provisions: (a) the test shall be performed for the gear with the gear ratio closest to 1; (b) in case the gear ratios of two gears have the same distance to a gear ratio of 1, the test shall be performed for the gear with the higher of those two gears ratios; (c) additionally, the test may be performed also for all other forward gears of the IEPC so that a dedicated dataset for each forward gear of the IEPC is determined.’; (b) the following paragraph is added: ‘The test of maximum and minimum torque limits shall be performed for each applicable combination of voltage and gear (i.e. either voltage level or forward gear in case of an IEPC with multispeed gearbox) declared in accordance with point 4.2.2.1 by applying the provisions laid down in points 4.2.2.2, 4.2.2.3 and 4.2.2.4 separately to each of those applicable variants.’; (8) in point 4.2.2.1, the second sentence is replaced by the following: ‘That declaration shall be separately made for each forward gear of an IEPC with multispeed gearbox measured in accordance with point 4.2.2 and also for each of the two voltage levels V and V .’; min,Test max,Test 68/105 ELI: http://data.europa.eu/eli/reg/2025/258/ojEN OJ L, 20.2.2025 (9) point 4.2.6.2 is replaced by the following: ‘4.2.6.2 Operating points to be measured For IEPC with multispeed gearbox the setpoints for rotational speed and torque required to be measured during the actual test run shall be determined for each single forward gear in accordance with points 4.2.6.2.1, 4.2.6.2.2 and 4.2.6.2.3.’; (10) point 4.2.6.2.1 is amended as follows: (a) in the second paragraph, the introductory wording is replaced by the following: ‘In the case of an IEPC with multispeed gearbox where the torque limits were only determined for a single gear in accordance with points 4.2.2(a) and 4.2.2(b), a separate dataset of setpoints for rotational speed of the UUT shall be defined for each single forward gear based on the following provisions:’; (b) the following paragraph is added: ‘In the case of an IEPC with multispeed gearbox where the torque limits were determined for each forward gear in accordance with point 4.2.2(c), a separate dataset of setpoints for rotational speed of the UUT shall be defined for each single forward gear based on the following provisions: (f) As setpoints for rotational speed of the UUT the same setpoints used for the measurement performed in accordance with point 4.2.2.2 for the respective voltage level and the respective forward gear shall be used. (g) The speed setpoint for the maximum 30 minutes continuous torque verification performed in accordance with point 4.2.4.2 for the respective voltage level shall be used in addition to the setpoints defined in subpoint (f) of this point. That rotational speed setpoint shall be converted to the respective setpoint for a specific forward gear by the equation defined in subpoint (e) of this point. (h) Further speed setpoints may be defined in addition to the setpoints defined in subpoints (f) and (g).’; (11) point 4.2.6.2.2 is amended as follows: (a) in the second paragraph, the introductory wording is replaced by the following: ‘In the case of an IEPC with multispeed gearbox where the torque limits were only determined for a single gear in accordance with subpoint (a) of point 4.2.2, a separate dataset of setpoints for torque of the UUT shall be defined for each single forward gear based on the following provisions:’; (b) the following paragraph is added: ‘In the case of an IEPC with multispeed gearbox where the torque limits were determined for each forward gear in accordance with point 4.2.2(c), a separate dataset of setpoints for torque of the UUT shall be defined for each single forward gear based on the following provisions: (i) At least 10 setpoints for torque of the UUT shall be defined for the measurement for each single forward gear, located both on the positive (i.e. driving) and negative (i.e. braking) torque side by applying the provisions defined in subpoints (a) to (e) of this point for the specific gear. ELI: http://data.europa.eu/eli/reg/2025/258/oj 69/105EN OJ L, 20.2.2025 (j) All resulting torque setpoints that have an absolute value higher than 10 kNm shall not be required to be measured during the actual test run for the specific gear performed in accordance with point 4.2.6.4.’; (12) the following point is inserted after point 4.2.6.2.2: ‘4.2.6.2.3 Requirements for minimum amount of torque setpoints For each setpoint for rotational speed defined in accordance with point 4.2.6.2.1 the following requirements shall apply: (a) In case the number of original torque setpoints defined in accordance with point 4.2.6.2.2 located on the positive (i.e. driving) side with an absolute torque value lower than or equal to 10 kNm is 1, two additional torque setpoints shall be added in accordance with the following provisions: (i) If the original torque setpoint is located higher than 6,66 kNm, two new additional torque setpoints shall be defined located equidistant between the original torque setpoint and 0 kNm. (ii) If the original torque setpoint is located lower than 6,66 kNm: — a new additional torque setpoint at 9,8 kNm shall be defined. — if the original torque setpoint is located lower than 3,33 kNm, a new additional torque setpoint located equidistant between the original torque setpoint and 9,8 kNm shall be defined. — if the original torque setpoint is located higher than or equal to 3,33 kNm, a new additional torque setpoint located equidistant between the original torque setpoint and 0 kNm shall be defined. (b) In case the number of original torque setpoints defined in accordance with point 4.2.6.2.2 located on the positive (i.e. driving) side with an absolute torque value lower than or equal to 10 kNmis 2, the following provisions shall apply: (i) If no original torque setpoint located higher than 6,66 kNm exists, a new additional torque setpoint at 9,8 kNm shall be defined. (ii) If an original torque setpoint located higher than 6,66 kNm exists and also an original torque setpoint located lower than 3,33 kNm exists, a new additional torque setpoint shall be defined located equidistant between the lowest and highest positive (i.e. driving) original torque setpoints. (iii) If an original torque setpoint located higher than 6,66 kNm exists and also an original torque setpoint located higher than or equal to 3,33 kNm exists, a new additional torque setpoint shall be defined located equidistant between the lowest positive (i.e. driving) original torque setpoint and 0 kNm. (c) In case the number of original torque setpoints defined in accordance with point 4.2.6.2.2 located on the negative (i.e. braking) side with an absolute torque value lower than or equal to 10 kNm is 1, two additional torque setpoints shall be added in accordance with the following provisions: (i) If the original torque setpoint located lower than – 6,66 kNm, two new additional torque setpoints shall be defined located equidistant between the original torque setpoint and 0 kNm. (ii) If the original torque setpoint is located lower than – 6,66kNm: — a new additional torque setpoint at – 9,8kNm shall be defined. 70/105 ELI: http://data.europa.eu/eli/reg/2025/258/ojEN OJ L, 20.2.2025 — if the original torque setpoint is located higher than – 3,33 kNm , a new additional torque setpoint shall be defined located equidistant between the original torque setpoint and – 9,8kNm. — if the original torque setpoint is located lower than or equal to – 3,33kNm exists, a new additional torque setpoint shall be defined located equidistant between the original torque setpoint and 0 kNm. (d) In case the number of original torque setpoints defined in accordance with point 4.2.6.2.2 located on the negative (i.e. braking) side with an absolute torque value lower than or equal to 10 kNmis 2, the following provisions shall apply: (i) If no original torque setpoint located lower than – 6,66kNm exists, a new additional torque setpoint at – 9,8kNm shall be defined. (ii) If an original torque setpoint located lower than – 6,66 kNm exists and also an original torque setpoint located higher than – 3,33 kNm exists, a new additional torque setpoint shall be defined located equidistant between the highest and lowest negative (i.e. braking) original torque setpoints. (iii) If an original torque setpoint located lower than – 6,66 kNm exists and also an original torque setpoint located lower than or equal to – 3,33 kNm exists, a new additional torque setpoint shall be defined located equidistant between the highest negative (i.e. braking) original torque setpoint and 0 kNm.’; (13) in point 4.2.6.4, the sixth paragraph is replaced by the following: ‘All operating points shall be held for an operating time of at least 5 seconds. During that operating time the rotational speed of the UUT shall be held at the rotational speed setpoint within a tolerance of ±1 % or 20 rpm whatever is larger. Additionally, during that operating time, except for the highest and lowest torque setpoint at each rotational speed setpoint, the average torque shall be held at the torque setpoint within a tolerance of ±1 % of the value of the torque setpoint or ±5 Nm (±2 % of the value of the torque setpoint or ±20 Nm in case of the UUT being an IEPC with either a gearbox and/or a differential included) whatever is larger.’; (14) in point 4.3.2, the following paragraph is added: ‘In the case of an IEPC with multispeed gearbox where the torque limits were determined for each forward gear in accordance with point 4.2.2(c), the manipulation step shall be done separately for each forward gear.’; (15) point 4.3.3 is amended as follows: (a) the introductory wording is replaced by the following: ‘The data for the drag curve determined in accordance with point 4.2.3 shall be modified in accordance with the following provisions considering that drag torque shall have a negative sign in accordance with the sign conventions laid down in point 4.1.9:’; (b) in subpoint (4), the following sentence is added: ‘These values of virtual drag torque shall have a negative sign in accordance with the sign conventions defined in point 4.1.9.’; ELI: http://data.europa.eu/eli/reg/2025/258/oj 71/105EN OJ L, 20.2.2025 (16) point 4.3.4 is amended as follows: (a) the introductory wording is replaced by the following: ‘The data for the EPMC determined in accordance with point 4.2.6.4 shall be extended in accordance with the following provisions for each forward gear measured and also for each of the two voltage levels Vmin,Test and Vmax,Test separately:’; (b) subpoint (3) is replaced by the following: ‘(3) If at a specific rotational speed setpoint, including the newly introduced data in accordance with points 1 and 2 of this point, a torque setpoint determined in accordance with point 4.2.6.2.2 (a) to (g) and (i) was omitted for the actual measurement in accordance with point 4.2.6.2.2 (h) or point 4.2.6.2.2(j), a new data point representing the omitted point shall be calculated based on the following provisions: (a) Rotational speed: using the value of the omitted setpoint for the rotational speed. (b) Torque: using the value of the omitted setpoint for torque. (c) Inverter power: calculating a new value by means of linear extrapolation according to the subsequent provisions in this subpoint. The parameters of the least squares linear regression line (i.e. slope and y-intercept) for a specific omitted point shall be determined based on the three actually measured points (i.e. data pairs of torque and inverter power) located closest to the torque value from subpoint (b) for the corresponding rotational speed setpoint. The extrapolated value for the inverter power shall be determined by taking the inverter power of the actually measured point located closest to the torque value from subpoint (b) as a starting point and applying only the slope of the specific least squares linear regression line. (d) For positive torque values, extrapolated values of inverter power resulting in values lower than the measured one at the actually measured torque point located closest to the torque value from subpoint (b) shall be set to the inverter power actually measured at the torque point located closest to the torque value from subpoint (b). (e) For negative torque values, extrapolated values of inverter power resulting in values higher than the measured one at the actually measured torque point located closest to the torque value from subpoint (b) shall be set to the inverter power actually measured at the torque point located closest to the torque value from subpoint (b). (f) Notwithstanding the provisions in subpoints (d) and (e), extrapolated values of inverter power resulting in an efficiency of the total IEPC (i.e. determined based on electrical inverter power and mechanical power at component output shaft) higher than resulting from the two efficiencies set out in point (i) or (ii), as applicable, shall be replaced by a new value of inverter power that reflects exactly the efficiency: (i) either the resulting efficiency for this specific operating point when the provisions for determining standard values in accordance with Appendix 9 are applied (ii) or the efficiency of the actually measured torque point located closest to the torque value from subpoint (b) decreased by 2 percentage points (e.g. 90,5 %-2 %=88,5 %).’; 72/105 ELI: http://data.europa.eu/eli/reg/2025/258/ojEN OJ L, 20.2.2025 (17) the following points are added after point 6.4.1: ‘7. Testing of FCS 7.1 Component test procedure for FCS 7.1.1 Fuel quality The reference fuel as laid down in Table 8 shall be used for the test run performed in accordance with point 7.3. Table 8 Definition of hydrogen reference fuel Limits Characteristics Units Test Method Minimum Maximum Hydrogen fuel index % mole 99,97 (1) fraction Total non-hydrogen gases μmol/mol 300 Lists of non-hydrogen gases and the specification of each contaminant(6) Water (H O) μmol/mol 5 (5) 2 Total hydrocarbons(2)except methane (C1 μmol/mol 2 (5) equivalent) Methane (CH ) μmol/mol 100 (5) 4 Oxygen (O ) μmol/mol 5 (5) 2 Helium (He) μmol/mol 300 (5) Total Nitrogen (N ) and Argon (Ar)(2) μmol/mol 300 (5) 2 Carbon dioxide (CO ) μmol/mol 2 (5) 2 Carbon monoxide (CO)(3) μmol/mol 0,2 (5) Total sulfur compounds(4)(H S basis) μmol/mol 0,004 (5) 2 Formaldehyde (HCHO) μmol/mol 0,2 (5) Formic acid (HCOOH) μmol/mol 0,2 (5) Ammonia (NH ) μmol/mol 0,1 (5) 3 Total halogenated compounds(5) μmol/mol 0,05 (5) (Halogenate ion basis) (1) The hydrogen fuel index is determined by subtracting the “total non-hydrogen gases” in this table, expressed in mole per cent, from 100 mole per cent. (2) Total hydrocarbons except methane include oxygenated organic species. (3) The sum of measured CO, HCHO and HCOOH shall not exceed 0,2 μmol/mol (4) As a minimum, total sulfur compounds include H2S, COS, CS2 and mercaptans, which are typically found in natural gas. (5) Test method shall be documented. Test methods defined in ISO21087 are preferable. (6) The analysis of specific contaminants depending on the production process shall be exempted. A vehicle manufacturer shall provide the responsible authority reasons for exempting specific contaminants. ELI: http://data.europa.eu/eli/reg/2025/258/oj 73/1057.2 System boundary of the unit under test and descriptions of specific components 7.2.1 System boundary of the unit under test The FCS unit under test (‘UUT’) may comprise different BoPCs, the allowed configurations are set out in Table 9. The terminology of the different components is based on the SAE norm J2615. All configurations of FCS have two things in common: (a) they are tested and certified without outer cooling sub-system as a standalone power supply unit without external electric components of the vehicle connected; (b) all of them comprise the APS. Passive components that may affect the fuel consumption of the FCS shall either be part of the FCS UUT or be fitted inside the test setup to ensure a comparable vehicle-like operation situation. The FCS UUT shall be set up on the test bed in accordance with the requirements set out in Table 9 and points 7.2.2 and 7.2.3. The type of FCS shall be determined dependent on the actual configuration of the FCS UUT on the test bed and one of the type identifiers ‘A’, ‘B’, ‘C’ or ‘D’ shall be assigned in accordance with the requirements set out in Table 9. 7.2.2 Fuel Cell Systems without Power Conditioning Sub-system If PCS is not included, the correction methods laid down in point 7.5 shall be applied to account for the impact of the power loss due to the PCS efficiency. 7.2.3 Fuel Cell Systems excluding power consuming balance of plant components The correction methods laid down in point 7.5 shall be applied to account for the power consuming components that are mandatory for the operation of the FCS and are not included in the UUT. All excluded power consuming components shall be listed and their power uptake documented in the information document set out in Appendix 7. Table 9 Definition of different FCS-variants (Types A to D) for certification Part of FCS Fitted for certification test Sub- Component System A_epyT B_epyT C_epyT D_epyT A_epyT B_epyT C_epyT D_epyT EN OJ L, 20.2.2025 Inlet particle filter No Yes, or test cell equipment(2) Inlet manifold No Yes, or test cell equipment(2) Intake air charging equipment (e.g. el. Yes Yes turbocharger or APS (Air compressor) Proces- sing Sub- Air flow meter(3) Yes Yes system) Air inlet duct work No Yes, or test cell equipment(2) Inlet silencer(3) No Yes, or test cell equipment(2) Charge air cooler(3) Yes Yes Humidification(3) Yes Yes 74/105 ELI: http://data.europa.eu/eli/reg/2025/258/ojPart of FCS Fitted for certification test Sub- Component System A_epyT B_epyT C_epyT D_epyT A_epyT B_epyT C_epyT D_epyT EN OJ L, 20.2.2025 Yes, else test cell No, or All coolant pump(s) Yes Yes equipment(1)(2) partly (5)) TMS Radiator No Test cell equipment(2) Ion-Exchanger(3) Yes Yes, or test cell equipment(2)(3) (6) Fan No No Water seperator(3) Yes Yes Drain Valve(3)(6) Yes Yes Exhaust manifold No Yes, or test cell equipment(2) WTS Connecting pipes No Yes, or test cell equipment(2) Silencer(3) No Yes, or test cell equipment(2) Tail pipe No Yes, or test cell equipment(2) Exhaust H2-Sensor No Yes, or test cell equipment(2) Fuel Supply System No Yes, or test cell equipment(2) (FSS) Pressure regulator / Yes Yes Injector Fuel heat Yes Yes exchanger(3) Active FPS Recirculation device Yes Yes (Compres- sor/Pump)(3) Passive Recirculation Yes Yes Devise (Injector/Ejector)(3) Filters(3) Yes Yes FCSS (*) Yes Yes Electrical components (e.g. PDS Yes Yes(4) cables, switches, relays)(*) Test cell Voltage regulator Test cell equip- PCS (DC/DC) and/or Yes No Yes No Yes Yes equip- ment(1) converter (DC/AC) ment(1)(2) (2) fuel cell Processing/control Yes Yes control unit sub- Software of system specified version Yes Yes(4) (*) no further break-down (1) not part of the certified energy balance, missing BoPC shall be accounted for using the methods laid down in point 7.5 (2) according to manufacturer specification which shall ensure real world like operation (3) if applicable/mounted on FCS respectively vehicle (4) only adaptions are allowed to enable standalone operation (5) integration of items is optional (6) may be part of either TMS or WTS ELI: http://data.europa.eu/eli/reg/2025/258/oj 75/105EN OJ L, 20.2.2025 7.2.4 Description of specific BoPCs The TMS and the cooling sub-system may consist of multiple coolant circuits. All those circuits may be divided into an inner and outer part. 7.2.4.1 Inner part of the cooling circuit Inner part of the cooling circuit consists of all parts of the cooling circuit that are integrated into the FCS and are part of the TMS of the UUT. 7.2.4.2 Outer part of the cooling circuit All parts of the cooling sub-system that are not part of the UUT are referred to as the outer cooling sub- system, including the heat exchangers that are integrated into the vehicle chassis and might vary dependent on the vehicle type or other parts that are not part of the UUT. 7.3. Test procedure 7.3.1 Purpose The purpose of the certification test procedure is to validate performance and capabilities declared by the manufacturer of the FCS, and to measure the fuel consumption / hydrogen mass flow under certain well-defined operating conditions. The aim is to generate reproducible data, suitable as input data for the simulation tool to enable the fuel consumption prediction of the certified vehicle component FCS. 7.3.2 Operation parameters and operating points The parameters set out in Table 10 shall apply for the purposes of the certification test. Table 10 Operation Parameters and Operating Points Name / Description Mandatory: Y/N Unit SCOP Y kW relative transition slope for set-point ramp-up (RTS-UP) N s-1 The manufacturer may specify a value for RTS-UP. If no value is specified the default value in accordance with point 7.3.4.6 shall be used. relative transition slope for set-point ramp-down (RTS-DOWN) N s-1 The manufacturer may specify a value for RTS-DOWN. If no value is specified the default value in accordance with point 7.3.4.6 shall be used. operating points: #01 .. #n Y kW op OP01, lower electrical power-output of FCS at OP # , 01 OPn upper operating point. op One row in the table per point. To indicate if OPxx is tested during ramp-up or ramp-down, an additional suffix in form of one character shall be added in the information documents, which shall be letter ‘a’ for ascending operating points, and letter ‘d’ for descending operating points. 76/105 ELI: http://data.europa.eu/eli/reg/2025/258/ojEN OJ L, 20.2.2025 Name / Description Mandatory: Y/N Unit FCS Type A/C (PCS part of UUT): Y V Lower voltage level of PCS output U at which the FCS PCS, out, lower can be operated at OPn without current limitation. op FCS Type B/D (PCS not part of UUT): U is a DC/DC-requirement specification provided by the PCS, lower manufacturer. The test cell DC/DC shall meet this requirement. FCS Type A/C (PCS part of UUT): Y V Upper voltage level of PCS output U at which the FCS PCS, out, upper can be operated at OPn . op FCS Type B/D (PCS not part of UUT): U is a DC/DC-requirement specification provided by the PCS, upper manufacturer. The test cell DC/DC shall meet this requirement. 7.3.3 Methodology The certification test procedure aims to record static data on a stabilized FCS at a certain number of different operating points. Each operating point shall be specified by its set-point for the electrical FCS power output. During the certification, the FCS shall be operated in its standard operation conditions, as documented by the manufacturer in accordance with Appendix 7. The voltage level at the interface between the PCS and the external electric components shall be determined by the lower and upper voltage level as specified in Table 10 to: U = 0,5 * (U + U ) PCS, out PCS, out, upper PCS, out, lower In case the PCS is not included in the UUT, U and U shall be derived from the requirement PCS, upper PCS, lower specifications for the DC/DC converter as provided by the manufacturer. The manufacturer shall declare in accordance with Appendix 7 realistic boundary conditions for normal operation of the FCS for in-vehicle usage. 7.3.4 Test procedure description The entire test procedure shall be performed without interruption and the entire test shall be recorded. The manufacturer shall specify the operating point (OP) with the lowest (OP01) and highest (OPn ) op electrical FCS power output to be measured as certification test range. That range shall cover the whole span for real world operation in vehicle application. 7.3.4.1 Definition of operating points The FCS shall be tested on a defined number of OPs, n , which shall be equal or greater than 12. op The OP with the lowest (OP01) and highest (OPn ) electrical FCS power output shall be measured op mandatorily. The remaining number of OP shall be distributed within the certification test range. The distribution of OPs does not need to be equidistant but shall enable a good interpolation of the fuel consumption over the whole certification test range. In regions of elevated non-linear relationship between FCS power output and fuel consumption a smaller step size between set-points is allowed. ELI: http://data.europa.eu/eli/reg/2025/258/oj 77/105EN OJ L, 20.2.2025 The naming convention of the operation set-points shall be defined as: P@OP01: target electrical FCS power output at OP01 P@OPxx: target electrical FCS power output at any OP between lowest and highest with the identifier xx running from 02 to (n -1) op P@OPn : target electrical FCS power output at OPn op op The maximum step size between two adjacent OPs, Step-size , shall be defined in accordance with the max following equation: Step-size < 0,20 * (P@OPn – P@OP01) max op 7.3.4.2 Conditioning phase Prior to the actual test the system shall be operated at least 60 minutes at a SCOP. That set-point (electrical FCS power output target value) shall lie between 40 % and 60 % of the upper operating point for certification, OPn , and shall be defined by the manufacturer. op 7.3.4.3 Sequence of operating points The series shall start from OP01 and shall be continued in ascending order up to OPn and then back op again to the lowest OP in descending order. The entire duration is dependent on the stabilization time at the individual OPs. Figure 3 depicts the whole test sequence in a schematic manner. Figure 3 Sequence of OP 7.3.4.4 Steps to be performed at each operating point In order to determine the fuel consumption at each OP in a reproducible manner, a sufficient stabilization time at each OP shall be defined by the manufacturer to achieve adequate stability of the system. The stabilization time shall be defined as individual value for each OP to be measured and shall be between t = 300 - 1 s and t = 1 800+ 1 s. Both stabilization times for the same OP in the stab,min stab,max ascending and descending part shall be within a tolerance of 2 seconds. The stabilization time for a measured OP shall start immediately after the ramp from the previous setpoint is completed. The analysis time is required to gain average values avoiding measurement noises and other instationary effects. Therefore, the analysis time shall be set to t = 180 ± 1 s and shall start after the stabilization anlys time. The measured values within that time span shall fulfil the stability criteria set out in point 7.3.4.5 unless the maximum stabilization time of t = 1 800+ 1 s is applied. After the analysis time, the stab,max standby time used for a proper separation from the next load point shall follow and the duration shall be defined as t = 10 ± 1 s. stb 78/105 ELI: http://data.europa.eu/eli/reg/2025/258/ojEN OJ L, 20.2.2025 Figure 4 depicts the steps to be performed at each OP. Figure 4 Steps to be performed at each OP 7.3.4.5 Stability Criteria To determine the degree of steadiness of the fuel consumption, metered by means of a test cell sensor at the fuel inlet of the FCS (m_ FPS as specified in Figure 5), a least squares linear regression shall be F performed, the independent variable being the time and the dependent variable being the fuel flow, in accordance with points 7.3.6.1 and 7.3.6.2. Based on the regression analysis, the following two stability indicators shall be calculated in accordance with point 7.3.6.3: (a) absolute value of the relative slope of the estimate (ARS), which represents the slope; (b) relative error of estimate (REE), which represents the degree of fluctuations of the monitored item. The values for the stability criteria shall be calculated in accordance with point 7.3.6.3. The OP shall be considered as stable if both indicators are below a specific threshold value within the defined analysis time frame. The threshold values for both stabilization indicators ARS and REE shall be calculated in accordance with the threshold values set out in Table 11. For the calculation of the REE, the normalized set power at any OP compared to the highest OP shall be defined as: P@OPxxnorm ¼ P@OPxx P@OPn op Table 11 Threshold values Indicator: Threshold Value: ARS 7,0E-5 sE-1 REE 1 + 1 P@OPxx norm In case the proof of stability at any OP fails, the test shall be repeated with an enlarged or the maximum stabilization time in accordance with point 7.3.4.4. ELI: http://data.europa.eu/eli/reg/2025/258/oj 79/105EN OJ L, 20.2.2025 7.3.4.6 Transition slope between two operating points The transition from one set-point to the next shall be executed with a moderate slope. Suitable slopes for up- and down-ramping of the set-point shall be specified by the manufacturer. The objective shall be to set a slope that facilitates a quick stabilization on the subsequent operating point. No restrictions shall apply to the value of the transition slope or to the shape of that slope. In case no transition slope is specified by the manufacturer, the RTS shall be set to +0,002 ±0,0004 s-1 during ramp-up and – 0,002±0,0004 s-1during ramp-down. dP =dt RTS ¼ el P@OPn op where: P : electrical DC power output of the FCS el dP =dt: slope of the transition of one operating point P at time t to a following operating point el el, 1 1 P el, 2 at time t 2. Where the transition time dt ¼ t2 – t1 is small enough to neglect the effects of non-linearity P@OPn : target electrical FCS power output at highest OP op 7.3.4.7 Calculation of measured fuel consumption and power output The electric power output and the corresponding hydrogen consumption rate of the UUT at each individual OP shall be calculated as the arithmetic mean over the analysis time t defined in anlys accordance with point 7.3.4.4. The calculation of the arithmetic means shall be done as follows: P FCS; avg; p ¼ 1 n ∑n i ¼ 1P FCS; i; p and m_ ¼ 1 ∑n m_ F; avg; p n i ¼ 1 F; i; p where: P : arithmetic mean over n recorded values within t of the electrical power output P FCS, avg, p anlys FCS, i, p in kW P : recorded value of electrical power output with index number i in kW. FCS, i, p This power output is metered UUT-type dependent after the PDS (sensor position: P_el, PDS, as depicted in Figure 5) or PCS (sensor position: P_el, PCS as set out in point 7.4, figure 5) arithmetic mean over n recorded values within t of the fuel flow m_ in g/h m_ anlys F; i; p F; avg; p m_ : recorded value of fuel flow with index number i in g/h F; i; p i: Index of individual recorded data point 1 to n p: Index for ascending (a) or descending (d) path (omitted for OPn ) op n:: number of recorded values during the averaging period t defined in accordance with point anlys 7.3.4.4. 80/105 ELI: http://data.europa.eu/eli/reg/2025/258/ojEN OJ L, 20.2.2025 Subsequently, one resulting arithmetic mean for both values P and m_ for each individual OP FCS, avg F; avg below OPn shall be calculated as the arithmetic mean of the averaged values from the ascending and op descending part in accordance with the following equations: P + P P FCS; avg ¼ FCS;avg;a 2 FCS;avg;d and m_ m_ ¼ m_ + F;avg;d F; avg F; avg; a 2 where: P : arithmetic mean of the electrical power output during the ascending path determined in FCS, avg, a accordance with the preceding paragraph in kW P : arithmetic mean of the electrical power output during the descending path determined FCS, avg, d in accordance with the preceding paragraph in kW m_ : arithmetic mean of the fuel flow during the ascending path determined in accordance F; avg; a with the preceding paragraph in g/h m_ : arithmetic mean of the fuel flow during the descending path determined in accordance F; avg;d with the preceding paragraph in g/h. For the OPn (upper OP), this averaging step is not applicable since for this OP only one single op measurement exists. 7.3.4.8 Correction of the FCS power output to reference conditions The measured FCS power output P shall be corrected in accordance with the following equation: FCS � NCV P FCS ¼ P FCS;avg + Δη m_ F;avg 360s 0td; sH2 h with: � Δη¼ k load�ðpin – p Þ where: � P : Electrical power output of FCS at reference conditions in kW FCS P : Electrical power output of FCS in accordance with point 7.3.4.7 in kW FCS,avg m_ : Fuel flow in accordance with point 7.3.4.7 in g/h F;avg NCV : Standard net calorific value of hydrogen in accordance with point 5.3.3.1 in MJ/kg std,H2 p*: Pressure at reference conditions with the numerical value of 0,975 bar p : Pressure of intake air to the APS of the UUT (p_ as specified in Figure 5) in bar. The in A,APS value shall be calculated as the arithmetic mean over the respective analysis time t anlys defined in accordance with point 7.3.4.4 and the resulting value shall be subsequently averaged over the ascending and descending part (except for OPn ) as prescribed for op the signal of fuel consumption in accordance with point 7.3.4.7. k : Gradient of efficiency determined in accordance with point 7.3.4.8.1 in bar-1. load ELI: http://data.europa.eu/eli/reg/2025/258/oj 81/105EN OJ L, 20.2.2025 7.3.4.8.1 Gradient of efficiency k load The value of normalized power shall be determined by dividing the value of P of a specific OP by FCS,avg the value of P for OPn , both derived in accordance with point 7.3.4.7. FCS,avg op Based on the value of normalized power of a specific OP, the value of k shall be determined from the load corresponding data in Table 12 by means of linear interpolation between the two adjacent data points. In case the value of normalized power is lower than 0,1, the value of k defined at 0,1 normalized load power shall be used. Table 12 Parameter k as function of normalized power load Normalized power [-] k load 0,1 0,3730 0,2 0,1485 0,5 0,0745 0,8 0,0855 1,0 0,1115 7.3.5 Test Conditions The ambient conditions in the test cell shall fulfil the minimum and maximum criteria set out in Table 13. Table 13 Ambient and media condition limits during certification test min value max value Ambient pressure 90,0kPa 102,0kPa Ambient temperature 288,0K 298,0K Oxidant (air) inlet pressure 90,0kPa 102,0kPa Oxidant (air) inlet temperature 288,0K 303,0K Relative Humidity, Oxidant (air) supply 45,0% 80,0% 7.3.6 Statistics 7.3.6.1 Mean value and standard deviation The arithmetic mean value shall be calculated as follows: ∑n x x ¼ i¼1 i n 82/105 ELI: http://data.europa.eu/eli/reg/2025/258/ojEN OJ L, 20.2.2025 The standard deviation shall be calculated as follows: sffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffi ∑n ðx – xÞ2 s¼ i¼1 i n – 1 7.3.6.2 Regression analysis The slope of the regression shall be calculated as follows: ∑n ðy – yÞ × ðx – xÞ a1 ¼ i¼1 ∑i n ðx – xÞ2i i¼1 i The y intercept of the regression shall be calculated as follows: a0 ¼y – ða1 × xÞ The standard error of estimate shall be calculated as follows: rffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffi ∑n ½y – ðx•a + aÞ�2 SEE¼ i¼1 i i 1 0 n 7.3.6.3 Stability criteria The ARS shall be calculated as follows: a ARS¼j 1j y The REE value shall be calculated as follows: REE¼jSEEj•100% y 7.4. Certification test documentation The relevant data for test reproducibility shall be documented in the information document set out in Appendix 7. The position of different sensors used for testing shall be defined in accordance with the schematic sketch of a representative FCS set out in figure 5. Figure 5 Schematic sketch of a representative FCS including the position of relevant sensors ELI: http://data.europa.eu/eli/reg/2025/258/oj 83/105EN OJ L, 20.2.2025 7.5 Calculation of effective electrical power output � The electrical power output of fuel cell system at reference conditions, P , determined in accordance FCS with point 7.3.4.8 shall be corrected for the following configurations: (a) PCS not being part of the FCS installed for the certification test; (b) power consuming balance of plant components not installed for the certification test at all or not installed within the UUT or being externally powered by the test bed infrastructure during the certification test. 7.5.1 Recording of additional values For each coolant pump not installed for the certification test at all or not installed within the UUT the following values shall be recorded separately: V_ volume flow of the coolant upstream of the TMS; C,TMS,in p pressure of the coolant upstream of the TMS; C,TMS,in p pressure of the coolant downstream of the TMS. C,TMS,out For each power consuming balance of plant component being externally powered by the test bed infrastructure during the certification test the electrical power uptake, P , shall be recorded el,AUX separately. In accordance with point 3.2.2 the volume flow and the electrical power uptake shall have a positive algebraic sign. All recorded values shall be averaged for each individual operating point of the FCS measured in accordance with the method set out in point 7.3.4.7 by applying the same specific averaging period t in accordance with point 7.3.4.4. anlys 7.5.2 Equations for corrections performed All following equations shall be evaluated for each individual operating point of the FCS measured in accordance with the method set out in point 7.3.4.7. In case the PCS not being part of the FCS installed for the certification test, the measured electrical power output at the location PDS in accordance with the schematic sketch of a representative FCS set out in figure 5 shall be corrected for the losses of a generic PCS in accordance with the following equation: � P* = P ×eta el,PCS FCS;PDS DC/DC where: P* electrical power output at the location PCS in accordance with Figure 5 at reference el,PCS conditions in kW P* electrical power output of fuel cell system at the location PDS in accordance with the FCS,PDS schematic sketch of a representative FCS set out in figure 5 at reference conditions determined in accordance with point 7.3.4.8 in kW eta generic efficiency factor of DC/DC converter shall be 0.975 DC/DC 84/105 ELI: http://data.europa.eu/eli/reg/2025/258/ojEN OJ L, 20.2.2025 For each coolant pump not installed for the certification test at all or not installed within the UUT the electrical power uptake shall be calculated in accordance with the following equation: P (p - p ) ×V_ / eta / eta el,Cool = C,TMS,in C,TMS,out C,TMS,in WP,hyd WP,EM where: P electrical power uptake of the coolant pump in kW el,Cool p pressure of the coolant upstream of the TMS in kPa C,TMS,in p pressure of the coolant downstream of the TMS in kPa C,TMS,out V_ volumetric coolant flow upstream of the TMS in m3/s C,TMS,in eta generic hydraulic efficiency factor of pump shall be 0,8 WP,hyd eta generic efficiency factor of electric pump drive shall be 0,8. WP,EM The final effective electrical power output of FCS used as input to the simulation tool taking all components consuming additional electric power into account shall be calculated in accordance with the following equation: P* = P* + ∑n P = eta + ∑o P + ∑p P = eta el,FCS,net el,PCS i¼1 el;AUX;i DC=DC j¼1 el;AUX;j k¼1 el;Cool;k DC=DC q + ∑ P l¼1 el;Cool;l where: P* effective electrical power output of FCS (used as input to the simulation tool) at el,FCS,net reference conditions in kW P* electrical power output at the location PCS in accordance with Figure 5 at reference el,PCS conditions in kW P electrical power uptake of balance of plant component not installed for the certification el,AUX test at all or not installed within the UUT or being externally powered by the test bed infrastructure during the certification test in kW where the following differentiation shall be applied: P all components connected to the FCS either at the location PDS in accordance with el,AUX,i Figure 5 or via a separate DC/DC converter; where i = 1, 2, 3, … maximum number n of such components to be considered P all components connected to the FCS either at the location PCS in accordance with el,AUX,j Figure 5 or without a separate DC/DC converter; where j = 1, 2, 3, … maximum number o of such components to be considered P electrical power uptake of the coolant pump in kW el,Cool where the following differentiation shall be applied: P all coolant pumps connected to the FCS either at the location PDS in accordance with el,Cool,k Figure 5 or via a separate DC/DC converter; where k = 1, 2, 3, … maximum number p of such components to be considered P all coolant pumps connected to the FCS either at the location PCS in accordance with el,Cool,l Figure 5 or without a separate DC/DC converter; where l = 1, 2, 3, … maximum number q of such components to be considered eta generic efficiency factor of DC/DC converter shall be 0,975. DC/DC ELI: http://data.europa.eu/eli/reg/2025/258/oj 85/105EN OJ L, 20.2.2025 7.5.3 Input to the simulation tool The values of effective electrical power output P* determined in accordance with point 7.5.2 el,FCS,net multiplied by -1 and absolute values of the fuel flow determined in accordance with point 7.3.4.7 shall be used as input to the simulation tool.”; (18) Appendix 7 is replaced by the following: ‘Appendix 7 Information document for FCS Communication concerning: Administration stamp — granting(1) — extension(1) — refusal(1) — withdrawal(1) (1) delete if not applicable of a certificate on CO emission and fuel consumption related properties of an electric machine system IEPC / IHPC 2 Type 1 / battery system / capacitor system in accordance / FCS / with Commission Regulation (EU) 2017/2400. Commission Regulation (EU) 2017/2400 as applicable on [date] Certification number: Hash: Reason for extension: Information document No: Issue: Date of issue: Date of Amendment: pursuant to … FCS type / family (if applicable): 0. GENERAL 0.1. Name and address of manufacturer: 0.2. Make (trade name of manufacturer): 0.3. FCS type: 0.4. FCS family: 0.5. FCS type as separate technical unit / FCS family as separate technical unit: 0.6. Commercial names (if available): 0.7. Means of identification of model, if marked on the FCS: 0.8. In the case of components and separate technical units, location and method of affixing of the EC approval mark: 0.9. Names and addresses of assembly plants: 0.10. Name and address of the manufacturer's representative: 86/105 ELI: http://data.europa.eu/eli/reg/2025/258/ojEN OJ L, 20.2.2025 PART 1 ESSENTIAL CHARACTERISTICS OF THE (PARENT) FCS AND THE FCS TYPES WITHIN A FCS FAMILY Parent FCS Family members or FCS type #1 #2 #3 … 1. General: 1.1. Upper power of FCS (specified upper electric power in real world operation): ..........................kW 1.2. Weight of FCS (including all parts of UUT): ..............................................................kg 1.3. Gross outer dimension of FCS (length, width and height): ..............................................mm 1.4. U range at the UUT interface, either PDS, out or PCS, out (min/max): ..................................V out 1.5. I range at the UUT interface, either PDS, out or PCS, out (min/max): ...................................A out 1.6. Output voltage range of PCS (min/max)(*): ...............................................................V 1.7. Type of FCS regarding test setup(**)(A, B, C, D): ............................................................ 2. APS: 2.1. Air Compressor 2.1.1. Make(s), type(s) .............................................................................................. 2.1.2. Power uptake in certification test range (min/max) ......................................................kW 2.2. Air humidification device(*) 2.2.1. Make(s), type(s): .............................................................................................. 2.2.2. Humidity exchange membrane, make(s), type(s): ............................................................ 3. TMS: 3.1. Cooling media of inner cooling liquid 3.1.1. Make(s), type(s) .............................................................................................. 3.1.2. Specific heat capacity @345 K: ......................................................................J/(kg·K) 3.1.3. Density @345 K: .........................................................................................kg/l 4. WTS: 4.1. Deionization unit 4.1.1. Make(s), type(s) .............................................................................................. 4.1.2. Ion-conductivity cooling media (nominal/max) .....................................................mS/cm 5. FPS: 5.1. Fuel injector or combination of injector/ejector: 5.1.1. Make(s), type(s): .............................................................................................. 5.1.2. Number of injectors: ......................................................................................... ELI: http://data.europa.eu/eli/reg/2025/258/oj 87/105EN OJ L, 20.2.2025 5.2. Anode recirculation blower(*)............................................................................... 5.2.1. Make(s), type(s)(*): ........................................................................................... 6. FCSS: 6.1. FC Stack(s): 6.1.1. Make(s), type(s): .............................................................................................. 6.1.2. Number of stacks: ........................................................................................... 6.1.3. Cell number of ejach stack: .................................................................................. 6.1.4. Cell surface area of each stack: ...........................................................................cm2 6.1.5. Setpoint of the reference current of the stack: .............................................................A 6.1.6. Reference condition(***), temperature T FCSS ¼0:5 × ðT C;out; FCSS + T C; in; FCSSÞ: ....................K 6.1.7. Reference condition(***), pressure p : ............................................................kPa A, FCSS, in 6.1.8. Reference condition(***), anode stoichiometry ν .......................................................... fuel 6.1.9. Reference condition(***), cathode stoichiometry ν ........................................................ Air 6.1.10. Stack voltage at reference condition of each stack: ........................................................V 6.1.11. Make(s), Type(s) of membrane electrode assemblies (MEA): ................................................. 7. Power Distribution Sub-System (PDS): 7.1. Power plug at the interface to FCSS(*) 7.1.1. Make(s), type(s): .............................................................................................. 8. Power Conditioning Sub-System (PCS): 8.1. DC/DC(*) 8.1.1. Make(s), type(s): .............................................................................................. 8.1.2. Voltage range inlet / primary side (min/max): .............................................................V 8.1.3. Voltage range inlet / secondary side (min/max): ...........................................................V 9. Fuel Cell Control Sub-System: 9.1. Firmware, Version & Build Number: ......................................................................... 9.2. Control Unit Hardware, Make & Type: ....................................................................... (*) if applicable (**) In accordance with point 7.2.1 and Table 9 of this Annex (***)declared by the manufacturer of the FCSS LIST OF ATTACHMENTS No: Description: Date of issue: 1 Information on FCS test conditions ........................ DD-MMM-YYYY 2 Information on operation boundary conditions ........... DD-MMM-YYYY 3 Information on FCS certification test results ............... DD-MMM-YYYY 88/105 ELI: http://data.europa.eu/eli/reg/2025/258/ojEN OJ L, 20.2.2025 Attachment 1 to FCS information document Information on FCS test conditions: value and unit Ambient pressure (absolute) XYZ.0 kPa Ambient temperature XYZ.0 K Oxidant (Air) inlet temperature XYZ.0 K Oxidant (Air) inlet pressure (absolute) XYZ.0 kPa Relative Humidity, oxidant / air supply XY.0 % Cooling media of inner circuit: Make: ___________, Type: ______________ Density of cooling media of inner circuit @345 K XY.0 kg/l Specific heat capacity of cooling media in the inner cooling circuit @345 K XYZ.0 J/(kg·K) SCOP: XYZ.0 kW Operating point #01 (OP01): XYZ.0 kW Operating point #02 (OP02): XYZ.0 kW Operating point #xx (OPxx, OP between OP02 and OPn ): XYZ.0 kW op Operating point #n (OPn highest operating point): XYZ.0 kW op op, FCS Type A/C (PCS part of UUT): XYZ.0 V Lower voltage level of PCS output UPCS,out,lower at which the FCS can be operated at OPnop without current limitation. FCS Type B/D (PCS not part of UUT): UPCS, lower is a DC/DC-requirement specification FCS Type A/C (PCS part of UUT): XYZ.0 V Upper voltage level of PCS output UPCS,out,upper at which the FCS can be operated at OPnop. FCS Type B/D (PCS not part of UUT): UPCS, upper is a DC/DC-requirement specification Optional, operation condition related parameters: relative transition slope for set-point ramp-up (RTS-UP) XYZ.0 s-1 (it is an approximate value for orientation, the manufacturer may specify a range around this number) relative transition slope for set-point ramp-down (RTS-DOWN) XYZ.0 s-1 (it is an approximate value for orientation, the manufacturer may specify a range around this number) ELI: http://data.europa.eu/eli/reg/2025/258/oj 89/105EN OJ L, 20.2.2025 Attachment 2 to FCS information document Boundary conditions for FCS operation in vehicles as declared by the manufacturer: This table is adopted / completed by the manufacturer according to their operation specification for FCS operation inside a vehicle. The specifications in the following table are mandatory: OP# parameter lower upper 01 Ambient Temperature XYZ.0 K XYZ.0 K … XYZ.0 K XYZ.0 K n XYZ.0 K XYZ.0 K op 01 Ambient Pressure XYZ.0 Pa XYZ.0 Pa … XYZ.0 Pa XYZ.0 Pa n XYZ.0 Pa XYZ.0 Pa op 01 Ambient Humidity XYZ.0 % XYZ.0 % … XYZ.0 % XYZ.0 % n XYZ.0 % XYZ.0 % op 01 Cooling Liquid Temperature FCSS Inlet XYZ.0 K XYZ.0 K Label according to Figure 5: T_C,in … XYZ.0 K XYZ.0 K with the additional suffix FCSS n XYZ.0 K XYZ.0 K op 01 Cooling Liquid Temperature FCSS Outlet XYZ.0 K XYZ.0 K … XYZ.0 K XYZ.0 K n XYZ.0 K XYZ.0 K op 01 Further boundary conditions for operation inside a vehicle XYZ.0 Unit XYZ.0 Unit … XYZ.0 Unit XYZ.0 Unit n XYZ.0 Unit XYZ.0 Unit op 90/105 ELI: http://data.europa.eu/eli/reg/2025/258/ojAttachment 3 to FCS information document Table 1 Information on FCS certification test results in form of arithmetic mean values gnidnecsa :aXXPO gnidnecsed :dXXPO s / noitaruD :10 1-s / SRA :20 - / EER :30 eht ta SCF rof dnamed rewop .le PS :40 Wk / )*(SCP/SDP ecafretni ecafretni eht ta SCF fo tnerruc CD PS :50 A /)*(SCP/SDP eht ta SCF eht fo tuptuo rewop .le VP :60 / )SCP ro SDP rehtie .e.i( ecafretni TUU Wk TUU ecafretni eht ta tnerruc CD VP :70 A / )SCP ro SDP rehtie .e.i( ecafretni devreser ecafretni TUU eht ta egatlov VP :90 V / )SCP ro SDP rehtie .e.i( h/g / leuf fo wolf ssaM :01 … SCOP OP01a OP02a OP03a OP.. OPn (***) op OPn -1d op OPn -2d op OPn -3d op OP..d OP01d gnidnecsa :aXXPO gnidnecsed :dXXPO nim/l / )**( leuf fo wolf emuloV :11 aPk / telni SCF ta erusserp leuF :21 aPk / )*( telni SSCF ta erusserp leuF :31 K / )*( telni SSCF ta erutarepmet leuF :41 h/g / ria fo wolf ssaM :51 nim/l / )**( ria fo wolf emuloV :61 aPk / telni SPA ta erusserp riA :71 K / telni SPA ta erutarepmet riA :81 % / telni SPA ta ytidimuh evitaler riA :91 SMT ta aidem gnilooc fo wolf ssaM :02 h/g / telni … EN OJ L, 20.2.2025 SCOP OP01a OP02a OP03a OP.. OPn (***) op OPn -1d op OPn -2d op OPn -3d op OP..d OP01d ELI: http://data.europa.eu/eli/reg/2025/258/oj 91/105gnidnecsa :aXXPO gnidnecsed :dXXPO ta aidem gnilooc fo wolf emuloV :12 h/l / )**( telni SMT ta aidem gnilooc fo erutarepmeT :22 K / telni SMT ta aidem gnilooc fo erutarepmeT :32 K / teltuo SMT SCF eht ot dedivorp rewop cirtcelE :42 Wk / SDP ta llec tset eht morf SCF eht ot dedivorp rewop cirtcelE :52 Wk / SCP ta llec tset eht morf EN OJ L, 20.2.2025 SCOP OP01a OP02a OP03a OP.. OPn (***) op OPn -1d op OPn -2d op OPn -3d op OP..d OP01d (*) if applicable / accessible (**) if mass flow of media needs to be calculated based on volume flow and density (***) nop: number of different operating points, OPnop is the upper OP during certification as specified in point 7.3.4.1 Explanations regarding the table in attachment 3 to FCS information document The positions of sensors are specified in a schematic manner in figure 5. All values - except for the duration, ARS and REE - are arithmetic mean values at each OP determined over the analysis time, t , defined in accordance anlys with point 7.3.4.4 (i.e. before the averaging step of ascending and descending). For the SCOP the averaging time frame shall be defined by the same time frame length as for the analysis time and shall be located just before the transition to the subsequent OP01a. The minimum precision requirements of sensors are indicated by a type classification in the respective column in Table 2. The following types are distinguished where type I has the highest precision and type III the lowest: Type I: accuracy according to Table 1 of this Annex; Type II: accuracy of integrated and accessible sensors (i.e. all FCS integrated automotive sensors are of type II); Type III: not applicable or precision not specified: precision according to best practice / common sense. If the same value is measured by more than one sensor only the numbers determined by the sensor with the higher precision shall be documented. If in the comment column the phrases “if applicable” / “if accessible” are set out, no additional sensors need to be installed. 92/105 ELI: http://data.europa.eu/eli/reg/2025/258/ojEN OJ L, 20.2.2025 Table 2 Accuracy requirements of sensors # Description Unit Type Comment 01 Duration s III time period in between transition periods of the power/ current setpoint 02 ARS s-1 III refer to point 7.3.4.5 of this Annex: Absolute value of the Relative Slope 03 REE - III refer to point 7.3.4.5 of this Annex: Relative error of estimate 04 SP el. power demand for FCS at kW III setpoint, if applicable the UUT interface (variant dependent: either PDS,out or PCS,out) (in case P is a SP) el 05 SP DC current of FCS at the UUT A III setpoint, if applicable interface (variant dependent: either PDS,out or PCS,out) (in case I is a SP) FCS 06 PV el. power output of the FCS at kW I process value, the UUT interface (variant dependent: either PDS,out or PCS,out) label in Figure 5: P_el, PDS or P_el,PCS if not metered directly, but calculated on the basis of U and I values, the U and I sensors shall comply with sensors type I 07 PV DC current at the UUT A I process value interface (variant dependent: either PDS,out or PCS,out) 08 reserved 09 PV voltage at the UUT interface V I process value (variant dependent: either PDS,out or PCS,out) 10 Mass flow of fuel g/h I/III either measured (I) or calculated (III) via density and volume flow, label in Figure 5: m_ _F, FPS 11 Volume flow of fuel l/min I if mass flow of media needs to be calculated based on volume flow and density otherwise it can be omitted, label in Figure 5: V__F, FPS 12 Fuel pressure at FCS inlet kPa I at interface test cell / UUT 13 Fuel pressure at FCSS inlet kPa II if accessible 14 Fuel temperature at FCSS inlet K II if accessible, else fuel temperature at the FCS inlet 15 Mass flow of air g/h I either measured or calculated via density and volume flow (label in Figure 5: m_ _A, APS) ELI: http://data.europa.eu/eli/reg/2025/258/oj 93/105EN OJ L, 20.2.2025 # Description Unit Type Comment 16 Volume flow of air l/min I if mass flow of media needs to be calculated based on volume flow and density otherwise it can be omitted (label in Figure 5: V__A, APS) 17 Air pressure at APS inlet kPa I label in Figure 5: p_A, APS 18 Air temperature at APS inlet K I label in Figure 5: T_A, APS 19 Air relative humidity at APS % II relative humidity at FCS inlet / FCS/APS interface; inlet label in Figure 5: RH_A 20 Mass flow of cooling media at g/h II if not metered, it is calculated via volume flow and TMS density, label in Figure 5: m_ _C, TMS 21 Volume flow of cooling media l/h II if mass flow of media needs to be calculated based on at TMS volume flow and density otherwise it can be omitted label in Figure 5: V__C, TMS 22 Temperature of cooling media K II label in Figure 5: T_C, in_TMS at TMS inlet 23 Temperature of cooling media K II label in Figure 5: T_C, out_TMS at TMS outlet 24 Electric power provided to the kW I the sum of all electric power supplied from the test cell FCS from the test cell at PDS connected to the FCS either at the location PDS in accordance with Figure 5 or via a separate DC/DC converter 25 Electric power provided to the kW I the sum of all electric power supplied from the test cell FCS from the test cell at PCS connected to the FCS either at the location PCS in accordance with Figure 5 or without a separate DC/DC converter … … … If other values are necessary in order to ensure a reproducibility of the test, those values shall be added as well including if the cooling is in multiple circuits, in which case each cooling flow shall be documented separately.’; (19) Appendix 8 is amended as follows: (a) the fifth indent is replaced by the following: ‘— Step 5: The overload characteristics shall be determined from the data generated in accordance with step 2. The overload torque and the corresponding rotational speed shall be calculated as average values over the speed range where the power is equal or greater than 90 % of the maximum power. In case the resulting overload torque is lower than continuous torque, the overload torque shall be set to the 30 minutes continuous torque resulting from step 4. The overload duration t0_maxP shall be defined by the whole duration of the test run performed in accordance with step 2 multiplied by a factor of 0,25.’; 94/105 ELI: http://data.europa.eu/eli/reg/2025/258/ojEN OJ L, 20.2.2025 (b) in the sixth indent, point (e)(iii), the equation: � � �� ‘P lossðT i;n jÞ¼ 1 – n TT i ; nn j × jT ij × n j × 62 0π ’ max rated is replaced by the following: � � �� ‘P lossðT i;n jÞ¼ 1 – η TT i ; nn j × jT ij × n j × 62 0π ’; max rated (20) Appendix 9 is amended as follows: (a) in point (2)(a), the equation ‘T (n , T , gear) = T + T × n / 1000 rpm + f × T ’ gbx,l,in in in d0 d1000 in T,gear in is replaced by the following: ‘T (n , T , gear) = T + T ×n / 1000 rpm + f ×|T |’; gbx,l,in in in d0 d1000 in T,gear in (b) in point (3)(a), the equation: ‘T , (T ) = η × T / i + (1- η ) × T ’ diffl,in in diff diff,d0 diff diff in is replaced by the following: ‘T , (T ) = η ×T / i + (1 - η ) ×|T |’; diffl,in in diff diff,d0 diff diff in (21) Appendix 10 is amended as follows: (a) point (1) is amended as follows: (a) point (b) is replaced by the following: ‘(b) The rated capacity shall be the value in Ah based on the capacity of single cells indicated on the datasheet from the cell manufacturer considering the arrangement of the single cells in parallel and series configuration. The resulting value for total capacity shall be multiplied by a factor of 0,9.’; (b) point (d) is replaced by the following: ‘(d) The DCIR shall be determined in accordance with the following provisions: (i) For HPBS in accordance with subpoint (a) the different values of DCIR shall be calculated by dividing the specific resistance of in [mOhm × Ah] as set out in the following table by the rated capacity in Ah as defined in accordance with subpoint (b) and multiplying the resulting value by the number of cells connected in series as indicated in accordance with Appendix 2, point 1.3.2, of Annex 6 to UN Regulation No 100: DCIR Specific resistance in [mOhm × Ah] DCIR R 40 I2 DCIR R 45 I10 DCIR R 50 I20 (ii) For HEBS in accordance with subpoint (a) the different values of DCIR shall be calculated by dividing the specific resistance in [mOhm × Ah] in the following table by the rated capacity in Ah as defined in accordance with subpoint (b) and multiplying the resulting value by the number of cells connected in series as indicated in accordance with Appendix 2, point 1.3.2, of Annex 6 to UN Regulation No 100: DCIR Specific resistance in [mOhm × Ah] DCIR R 210 I2 DCIR R 240 I10 DCIR R 270 I20 DCIR R 390’ I120 ELI: http://data.europa.eu/eli/reg/2025/258/oj 95/105EN OJ L, 20.2.2025 (c) points (e)(i) and (e)(ii) are replaced by the following: ‘(i) For HPBS in accordance with subpoint (a) the values for maximum charging and maximum discharging current dependent on the SOC level shall be set to the respective current in A corresponding to the C-rates (nC) set out in the following table: C-rate (nC) for maximum C-rate (nC) for maximum discharging SOC [%] charging current current 0 9,0 0,0 30 9,0 50,0 80 9,0 50,0 100 0,0 50,0 (ii) For HEBS in accordance with subpoint (a) the values for maximum charging and maximum discharging current dependent on the SOC level shall be set to the respective current in A corresponding to the C-rates (nC) set out in the following table: C-rate (nC) for maximum C-rate (nC) for maximum SOC [%] charging current discharging current 0 0,9 0,0 30 0,9 5,0 80 0,9 5,0 100 0,0 5,0’ (b) point (2)(d) is replaced by the following: ‘The internal resistance shall be determined in accordance with the following equation: V – V C 1 R I;Cap ¼ R I;ref × 0ma ;x 5;Ca 5p × Vmin;Cap × Cref × n ref Cap ser where: R = Internal resistance [Ohm] I,Cap R = Reference for internal resistance with a numeric value of 0,00375 [Ohm] I,ref V = Maximum voltage as defined in accordance with subpoint (b) above [V] max,Cap V = Minimum voltage as defined in accordance with subpoint (c) above [V] min,Cap V = Reference for maximum voltage with a numeric value of 2,7 [V] ref C = Reference for capacitance with a numeric value of 3 000[F] ref C = Capacitance as defined in accordance with subpoint (a) above [F] Cap n = number of cells connected in series as defined in accordance with subpoint (a) above [-]’; ser (22) Appendix 11 is replaced by the following: ‘Appendix 11 Standard values for FCS The following steps shall be performed to generate the input data for the FCS based on standard values: (a) The input data for the FCS required in accordance with Appendix 15 shall be determined based on the maximum electrical power output of the FCS in accordance with Appendix 1, point 4.6., of Annex 6 to UN Regulation No 100. 96/105 ELI: http://data.europa.eu/eli/reg/2025/258/ojEN OJ L, 20.2.2025 (b) In case that more than one FCS are installed in the vehicle, the parameter in accordance with subpoint (a) shall be declared for each individual FCS separately and also the determination of input data shall be done for each individual FCS separately in accordance with the corresponding required input defined in Table 11a of Annex III to this Regulation). (c) The values of fuel mass flow as a function of electrical power output shall be calculated based on the generic efficiency values in accordance with the following table: Normalized power [-] Efficiency [%] 0,01 3,67 0,05 18,33 0,10 36,67 0,125 45,83 0,15 55,00 0,20 54,12 0,25 53,24 0,30 52,35 0,35 51,47 0,40 50,59 0,45 49,71 0,50 48,82 0,55 47,94 0,60 47,06 0,65 46,18 0,70 45,29 0,75 44,41 0,80 43,53 0,85 42,65 0,90 41,76 0,95 40,88 1,000 40,00 (d) The values of fuel mass flow and the corresponding electrical power output shall be determined in accordance with the following equation: 3 600s P m_ fuel ¼ P rated;el� en to arm;i �100� NCV h kJ i std;H2 g where: m_ = fuel mass flow [g/h] fuel P = maximum electrical power output of the FCS as defined in accordance with subpoint (a) rated,el above [kW] P = normalized electrical power output of the FCS for all values i as defined in accordance with norm,i subpoint (c) above [-] ELI: http://data.europa.eu/eli/reg/2025/258/oj 97/105EN OJ L, 20.2.2025 eta = efficiency of the FCS for all values i as defined in accordance with subpoint (c) above i corresponding to P [%] norm,i NCV = standard net calorific value of hydrogen in accordance with point 5.3.3.1 [MJ/kg] std,H2 P FCS;el;i ¼ P rated;el� P norm;i where: P = electrical power output of the FCS [kW] FCS,el,i P = maximum electrical power output of the FCS as defined in accordance with subpoint (a) rated,el above [kW] P = normalized electrical power output of the FCS for all values i as defined in accordance with norm,i subpoint (c) above [-]’; (23) in Appendix 12 the following points are added: ‘5. Fuel cell systems 5.1 Every FCS shall be manufactured to conform to the approved type with regard to the description as given in the certificate and its annexes. The conformity of the certified CO emissions and fuel consumption related 2 properties procedures shall comply with those set out in Article 31 of Regulation (EU) 2018/858. 5.2 Conformity of the certified CO emissions and fuel consumption related properties shall be checked on the 2 basis of the description in the certificates and information packages annexed thereto as set out in Appendix 7. 5.3 Conformity of the certified CO emissions and fuel consumption related properties shall be assessed in 2 accordance with the specific conditions laid down in point 5. 5.4 The component manufacturer shall test annually the number of units indicated in Table 4 based on the total annual production number of fuel cell systems produced by the component manufacturer. For the purpose of establishing the annual production numbers, only fuel cell systems which fall under the requirements of this Regulation and for which no standard values were used shall be considered. Table 4 Sample size conformity testing Number of relevant fuel cell systems produced the year Annual number of tests before(**) 0 – 3 000 1 test every 3 years(*) 3 001– 6 000 1 test every 2 years(*) 6 001– 12 000 1 12 001– 30 000 2 30 001– 60 000 3 60 001– 90 000 4 90 001– 120 000 5 120 001– 150 000 6 > 150 000 7 (*) The CoP test shall be performed in the first year. (**) Only fuel cell systems which fall under the requirements of this Regulation and which did not get standard values according to Appendix 11 shall be considered. 98/105 ELI: http://data.europa.eu/eli/reg/2025/258/ojEN OJ L, 20.2.2025 5.5 The approval authority shall identify together with the component manufacturer the type(s) of fuel cell systems to be tested for the conformity of the certified CO emissions and fuel consumption related 2 properties. The approval authority shall ensure that the selected type(s) of fuel cell systems is manufactured to the same standards as for serial production. 5.6 If the result of a test performed in accordance with point 5.7 does not fulfill the pass criteria set out in point 5.7.4., three additional units from the same type shall be tested. If any of them fails, Article 23 shall apply. 5.7 Conformity of production of testing of fuel cell systems 5.7.1 Boundaries conditions All boundary conditions laid down in this Annex for the certification testing shall apply unless stated otherwise in this paragraph. The measurement equipment specifications defined in accordance with point 3.1 do not need to be fulfilled for CoP testing. The CoP testing may be conducted with regular market fuel. However, at the manufacturer's request, the reference fuel set out in point 7.1.1 may be used. 5.7.2 Testrun The test procedure shall be performed in accordance with point 7.3.4 following all principles set out therein but with a reduced number of OPs to be measured. The manufacturer may as an alternative option select to measure the complete set of OP from the original component certification following the exact same provisions and boundary conditions as applied during the original component certification and documented in the information document set out in Appendix 7. The target OPs to be measured shall be defined by the normalized set power, P@OPxx , calculated in norm accordance with the following equation: P@OPxxnorm ¼ P@OPxx P@OPn op where: P@OPxx: target electrical FCS power output at a certain OP between lowest and highest with the identifier xx running from 01 to n op P@OPn : target electrical FCS power output at highest OP op The target OPs to be measured for CoP testing shall be selected out of the target OPs from the original component certification defined in accordance with point 7.3.4.1 and recorded in the information document set out in Appendix 7 during component certification. The target OPs to be selected shall be defined by the normalized set power values in accordance with the following points (a) to (e): (a) OP next lower or equal to 0,15 In case there is no OP lower or equal to 0.15 existing, the lowest OP out of the target OPs from the original component certification shall be used. (b) OP next higher to 0,15 In case this OP is already selected for CoP under point (a), the next highest OP out of the target OPs from the original component certification shall be used. (c) OP closest to 0,4 In case the next lower and next higher OP are exactly equidistant to 0.4, the next lower OP shall be used for CoP testing. ELI: http://data.europa.eu/eli/reg/2025/258/oj 99/105EN OJ L, 20.2.2025 In case this OP is already selected for CoP under point (b), the next highest OP out of the target OPs from the original component certification shall be used. (d) OP next lower to 0,7 In case this OP is selected for CoP under point (c), the next highest OP out of the target OPs from the original component certification shall be used. (e) OP equal to 1,0 In case this OP is already selected for CoP under point (d), it shall be measured only once. With the target OPs to be measured for CoP testing, the provisions of point 7.3.4 including all its subpoints shall apply in order to determine the values of P and m_ . In that context, target FCS, avg F; avg OPs to be measured with the normalized set power of 1 shall be considered as OPn and only op measured once whereas all other target OPs shall be measured twice (i.e. in the ascending and descending path). 5.7.3 Post-processing of results All values of of P determined in accordance with point 5.7.2 shall be processed in accordance with FCS, avg point 7.5 of this Annex to derive the values of final effective electrical power output P* . el,FCS,net Subsequently, the resulting values of P* and m_ determined in accordance with point 5.7.2 shall el,FCS,net F; avg be corrected for uncertainty deviation of CoP measurement equipment in accordance with points (a) to (f): (a) The difference in measurement equipment uncertainty in percent between component type approval and CoP testing in accordance with this Appendix shall be calculated for the measurement systems used for current, voltage and fuel mass flow. (b) The difference in uncertainty in percent referred to in subpoint (a) shall be calculated for both, the analyzer reading and the maximum calibration value defined in accordance with point 3.1 of this Annex. (c) The total difference in uncertainty for electrical power shall be calculated in accordance with the following equation: rffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffi 2 2 2 2 Δu ¼ Δu + Δu + Δu + Δu P;el;CoP U;maxcalib U;value I;maxcalib I;value where: Δu difference in uncertainty for maximum calibration value for voltage measurement [%] U,max calib Δu difference in uncertainty for analyzer reading for voltage measurement [%] U,value Δu difference in uncertainty for maximum calibration value for current measurement [%] I,max calib Δu difference in uncertainty for analyzer reading for current measurement [%] I,value (d) The total difference in uncertainty for fuel mass flow shall be calculated in accordance with the following equation: rffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffi 2 2 Δu m_ ;CoP ¼ Δu m_ ;maxcalib + Δu m_ ;value fuel fuel fuel where: Δu m_ ;maxcalib difference in uncertainty for maximum calibration value for fuel mass flow fuel measurement [%] Δu m_ ;value difference in uncertainty for analyzer reading for fuel mass flow measurement [%] fuel 100/105 ELI: http://data.europa.eu/eli/reg/2025/258/ojEN OJ L, 20.2.2025 (e) All values of P*el,FCS,net determined in accordance with point 7.5 of this Annex shall be corrected in accordance with the following equation: P* = P* (1 - Δu ) el,CoP el,FCS,net P,el,CoP where: Δu total difference in uncertainty for electrical power in accordance with subpoint (c) P,el,CoP (f) All values of and m_ determined in accordance with point 7.3.4.7 of this Annex shall be corrected F; avg in accordance with the following equation: m F,CoP = m_ F; avg(1 + Δu m_ ;CoP) fuel where: Δu m_ ;CoP total difference in uncertainty for fuel mass flow in accordance with subpoint (d) fuel 5.7.4 Evaluation of results For each target OP for CoP testing, the specific fuel consumption, SFC , shall be calculated from the CoP corresponding values of P* and m determined in accordance with point 5.7.3 by dividing m by el,CoP F,CoP F,CoP P* . el,CoP The type approved specific fuel consumption, SFC , shall be calculated from the data of the original TA component certification for P* determined in accordance with point 7.5 of this Annex and m_ el,FCS,net F; avg determined in accordance with point 7.3.4.7 of this Annex for all target OPs from the original component certification corresponding to the ones applied for CoP. The values of SFC shall be calculated by dividing TA of m_ by the corresponding value of P* for each target OP. F; avg el,FCS,net Subsequently, the absolute relative deviation, ARD, for each target OP for CoP testing shall be calculated in accordance with the following equation: jSFC – SFC j ARD = CoP TA SFC TA The conformity of the certified CO emissions and fuel consumption related properties test is passed when 2 the average of the ARD determined out of the individual ARD values of each target OP for CoP testing is smaller than 0,08.’; (24) in Appendix 13, the following points are added: ‘2. Fuel Cell Systems 2.1. General A family of fuel cell systems (FCS) is characterized by design and performance parameters. Those shall be common to all members within the family. The component or vehicle manufacturer may decide which FCS belong to a family, if the membership criteria listed in this Appendix are fulfilled. The related family shall be approved by the approval authority. The manufacturer shall provide to the approval authority the appropriate information relating to the members of the family. 2.2. Special cases In some cases, there may be interaction between parameters. That shall be taken into consideration to ensure that FCS with similar characteristics are included within the same family. Those cases shall be identified by the manufacturer and notified to the approval authority. It shall then be considered as a criterion for creating a new family of FCS. ELI: http://data.europa.eu/eli/reg/2025/258/oj 101/105EN OJ L, 20.2.2025 In case of devices or features, which are not listed in point 2.5 of this Appendix and which have a strong influence on the level of performance and/or the electric power generation, the respective devices or features shall be identified by the manufacturer based on good engineering practice, and shall be notified to the approval authority. It shall then be considered as a criterion for creating a new family of FCS. 2.3. Family concept The family concept defines criteria and parameters enabling the manufacturer to group FCS into families with similar or equal data relevant for fuel / hydrogen consumption. 2.4. Special provisions regarding representativeness The approval authority may conclude that the performance parameters and the fuel / hydrogen consumption of the family of FCS is best characterized by additional testing. In this case, the manufacturer shall submit the appropriate information to determine the FCS within the family likely to best represent the family. The approval authority may, based on that information, also conclude that the manufacturer is required to create a new family of FCS consisting of less members in order to be more representative. If members within a family incorporate other features which may be considered to affect the performance parameters and/or the fuel / hydrogen consumption, those features shall also be identified and considered in the selection of the parent. 2.5. Parameters defining a family of FCS In addition to the parameters listed below, the manufacturer may introduce additional criteria allowing the definition of families of more restricted size. Those parameters are not necessarily parameters that have an influence on the level of performance and/or fuel / hydrogen consumption. 2.5.1 The following criteria shall apply to all members within a family of FCS: (a) All family members are of the same type of FCS defined in accordance with Table 9 of this Annex. (b) Fuel Cell Stack with a tolerance of ±5 % for weight & size and with a tolerance of ±2 % for the number of cells and cell surface area. (c) PCS (if applicable) with a tolerance of ±5 %: efficiency. (d) Air compressor with a tolerance of ±5 %: efficiency. (e) Humidifier (if applicable): similar layout and dimension. (f) Pumps (if applicable): similar layout and dimension. (g) Heat exchangers: similar layout and dimension. (h) Electrical plugs: any changes allowed. (i) Piping: any changes allowed. (j) Media actuators: any changes allowed. (k) Housing: any changes allowed. (l) Sensors: Changes allowed, if the precision of the ‘parent’ sensor used in certification process is still met. (m) Minimum number of OP in the declared operating range: All FCS within the same family of FCS shall have a minimum number of 8 operating points, as defined in accordance with point 7.3.4.1, located within their individual declared operating range specified by the manufacturer in accordance with point 7.3.4 of this Annex. Upon approval from the approval authority, changes to the components set out in points (a) to (l) may occur if sound engineering rationale is provided to prove that the respective change does not negatively affect the performance parameters or the fuel consumption. 102/105 ELI: http://data.europa.eu/eli/reg/2025/258/ojEN OJ L, 20.2.2025 2.6. Choice of the parent The parent of one family of FCS shall be member with the highest overall effective electric power output.’; (25) in Appendix 14, point 1.4, Table 1, the following row is inserted after the row ‘B’: ‘F fuel cell system (FCS)’ (26) Appendix 15 is amended as follows: (a) the section ‘Set of input parameters for Electric machine system’ is amended as follows: (a) Table 1 is amended as follows: (1) in row ‘CertificationMethod’, column ‘Description/Reference’ the text is replaced by the following: ‘Allowed values: ‘Measured’, ‘Standard values’’; (2) in row ‘DcDcConverterIncluded’, column ‘Description/Reference’ the text is replaced by the following: ‘Set to ‘true’ where a DC/DC converter is part of the electric machine system, in accordance with point 4.1 of this Annex. Where the parameter ‘CertificationMethod’ is ‘Standard values’, the parameter shall always be set to ‘true’’; (b) Table 6 is amended as follows: (1) in row ‘CoolantTempInlet’, column ‘Description/Reference’ the text is replaced by the following: ‘Determined in accordance with paragraphs 4.1.5.1 and 4.3.6 of this Annex. The input shall be specified as an average value over both voltage levels.’; (2) in row ‘CoolingPower’, column ‘Description/Reference’ the text is replaced by the following: ‘Determined in accordance with paragraphs 4.1.5.1 and 4.3.6 of this Annex. The input shall be specified as an average value over both voltage levels.’; (b) the section ‘Set of input parameters for IEPC’ is amended as follows: (a) in Table 1, the following row is added: ‘DisengagementClutch P565 boolean [-] In case the IEPC is equipped with a functionality that actively, under certain operating conditions, allows for mechanically disconnecting all EMs inside the component from the rest of the vehicle’s powertrain towards the wheels, this input shall be set to true. The exact location of the disconnection may also be located further downstream of the EMs output shafts and include some of the gearing parts of the IEPC being disengaged.’ ELI: http://data.europa.eu/eli/reg/2025/258/oj 103/105EN OJ L, 20.2.2025 (b) in Table 2, in row ‘MaxOutputShaftTorque’, column ‘Description/Reference’ the text is replaced by the following: ‘Optional. In case of an IEPC design type wheel motor the declared value for the maximum torque at the output shaft of the component shall correspond to the configuration measured in accordance with point 4.1.1.2 of this Annex (i.e. the value declared if two such components were measured shall be twice as high as if only one single component was measured).’; (c) in Table 4, the heading is replaced by the following: ‘Input parameters ‘IEPC/MaxMinTorque’ for each operating point, for each voltage level measured and for each forward gear measured (optional gear dependent measurement in accordance with point 4.2.2(c) of this Annex)’; (d) in Table 7, in rows ‘CollantTempInlet’ and ‘CoolingPower’, column ‘Description/Reference’ the text is replaced by the following: ‘Determined in accordance with points 4.1.5.1 and 4.3.6 of this Annex. The input shall be specified as an average value over both voltage levels.’; (c) the section ‘Set of input parameters for Battery system’ is amended as follows: (a) Table 1 is amended as follows: (1) in row ‘RatedCapacity’, column ‘Description/Reference’, the following text is inserted: ‘Where the parameter ‘CertificationMethod’ is ‘Standard values’, those values shall be determined in accordance with Appendix 10, point (1)(b)’; (2) in row ‘JunctionboxIncluded’, column ‘Parameter ID’, the text is replaced by the following: ‘P516’; (b) Table 4 is amended as follows: (1) in row ‘SOC’, column ‘Description/Reference’, the text is deleted; (2) in rows ‘MaxChargingCurrent’ and ‘MaxDischargingCurrent’, column ‘Description/Reference’ the following text is added: ‘Where the parameter ‘CertificationMethod’ is ‘Standard values’, those values shall be determined in accordance with Appendix 10, subpoint (1)(e), and all values shall have a positive pre-sign.’; (d) in the section ‘set of input for Capacitor System’, Table 1 is amended as follows: (a) in row ‘CertificationMethod’, column ‘Description/Reference’, the text is replaced by the following: ‘Allowed values: ‘Measured’, ‘Standard values’.’; (b) in row ‘InternalResistance’, column ‘Unit’, the following text is inserted: ‘[mOhm]’; (c) in row ‘TestingTemperature’, column ‘Parameter ID’, the text is replaced by the following: ‘P537’; 104/105 ELI: http://data.europa.eu/eli/reg/2025/258/ojEN OJ L, 20.2.2025 (e) the following section is added: ‘Set of input parameters for fuel cell system Table 1 Input parameters ‘Fuel cell system/General’ Parameter name Parameter ID Type Unit Description/Reference Manufacturer P566 token - Model P567 token - CertificationNumber P568 token - Date and time when the Date P569 dateTime - component-hash is created Manufacturer specific input regarding the tools used for AppVersion P570 token - evaluation and handling of measured component data Allowed values: ‘Measured’, CertificationMethod P571 string - ‘Standard values’ Defined in accordance with Appendix 1, point 4.6., of FCSRatedPower P572 integer kW Annex 6 to UN Regulation No 100 Table 2 Input parameters ‘Fuel cell system/FuelMap’ for each operating point measured Parameter name Parameter ID Type Unit Description/Reference OutputPower P573 double, 2 kW Electric power provided by the FCS determined in accordance with point 7.5.3 FuelConsumption P574 double, 2 g/h Fuel mass flow determined in accordance with point 7.5.3.’ ELI: http://data.europa.eu/eli/reg/2025/258/oj 105/105