Proposal to establish uniform provisions for approval of electric powertrain retrofit system installation on vehicles of categories M₁–M₃ and N₁–N₃:

• Add abbreviations section,
• Insert definitions of electric powertrain retrofit system, vehicle installation approval, approval of electric powertrain retrofit system, type of electric powertrain retrofit system, original vehicle, parent vehicle, and member of family,
• Modify scope to apply to electric powertrain retrofit systems and their installation on vehicles transformed,
• Delete prior scope provisions,
• Renumber paragraphs accordingly,
• Insert markings requirements for retrofit system installation plates,
• Add approval procedures and communication forms,
• Insert specific requirements regarding electric powertrain retrofit systems with compliance to applicable UN Regulations including UN R10, UN R13, UN R13H, UN R85, and UN R100,
• Insert application range provisions,
• Modify installer authorization requirements,
• Insert information requirements for retrofit system manufacturers to provide installers,
• Insert end-user manual requirements,
• Add provisions for periodic technical inspection including retrofit system identifiability and certification requirements,
• Insert conformity of production procedures,
• Modify procedures for extension and modification of approval,
• Modify penalties for non-conformity and withdrawal procedures,
• Insert introductory provisions explaining the Regulation’s purpose,
• Insert names and addresses reporting requirements for technical services and type approval authorities,
• Split Annexes 1, 2, 3, 4, 5, 6, and 7 into separate provisions for electric vehicles and hydrogen fuel cell vehicles,
• Insert Annex 5 specific requirements aligned with UNECE Regulations including electromagnetic compatibility, braking, electric drive train power measurement, rechargeable energy storage system compliance with phased timeline from date of entry into force to 1 September 2031 for UNECE Regulation 100 compliance, and other applicable regulations.

This regulation proposes uniform provisions for the approval of electric powertrain retrofit systems (EPRS) intended for the conversion of vehicles of categories M and N to electric propulsion. It establishes requirements for EPRS design, installation by authorized installers, type approval procedures, application ranges, markings, conformity of production, and modification or extension of approvals. Specific requirements for compliance with applicable UN Regulations are defined, including electromagnetic compatibility, braking, power measurement, rechargeable energy storage systems, and mass and dimension limits. The regulation applies to both pure electric vehicles (EV) and hydrogen fuel cell vehicles (HFCV).

The agenda includes adoption of the coordination and organization of work with reference to GRPE-92-14, EV/HFCV-02-02, GRPE-93-22-Rev.1, GRSP-78-17, GRVA-25-19, WP.29-199-16, and other documents, electrical safety review, braking, EMC, power determination and battery range, UN draft discussion, and any other business, with a next meeting scheduled for 8th October online.

Updates and comments on the draft uniform provisions establishing harmonized methods for the approval of vehicles transformed with electric powertrain retrofit systems for categories M₁–M₃ and N₁–N₃. Requirements cover application for approval, markings on transformation plates, type approval procedures, general and specific requirements for retrofit systems, application range definitions, installer authorization and responsibilities, information to be provided by manufacturers to installers, end-user manuals, conformity of production procedures, modification and extension of approval, withdrawal of approvals, and notification procedures to contracting parties. Specific compliance is required with UN R10, UN R13, UN R13H, UN R85, UN R100, UN R121, UN R134, UN R138, UN R79, UN R155, UN R154, and UN R49, with staged implementation dates for certain requirements such as rechargeable energy storage system compliance from 1 September 2027 onwards and braking system compliance from 1 September 2026 onwards.

Minutes of the eleventh meeting of the IWG on EV/HFCV Retrofit Systems held on 9 September 2026. The group adopted the provisional agenda and reviewed the draft UN Regulation on EV/HFCV retrofit systems. Key discussions addressed the regulatory concept for approval of the Electric Powertrain Retrofit System combined with installation requirements and vehicle testing, vehicle scope including possible exclusion of older vehicles and those subject to UN Regulations Nos. 155 and 156, and confirmation that HFCV provisions would remain as placeholders for later development. The updated working document will be circulated before submission to GRPE in October 2026.