The 73rd EPPR Informal Working Group Meeting on Environmental and Propulsion Performance Requirements of L-category vehicles was held 1 June 2026. The agenda and previous meeting report EPPR-72-03 were adopted without changes. The IWG discussed transposing UN-GTR No. 2 to Euro 3, 4, and 5 emission levels through incremental steps; the new 02 series of amendments to R40 was adopted by March 198/WP.29 (WP.29/2026/24), and IMMA presented a draft 03 series for Euro 4 level. The IWG agreed to identify legislative gaps via questionnaire due 26 June. Information was exchanged on maximum power determination, battery electric vehicle range determination standardization using SAE J2982, and deterioration factors in GTR 23 on durability. The next meetings are scheduled for 8 July 2026, 7 September 2026, and October 2026.

The EV/HFCV Retrofit Systems IWG has held nine meetings since creation and focused on EV retrofit requirements. The group compiled requirements for Electrical Safety (UN R100), Braking (UN R13/R13H), Cybersecurity (UN R155), and EMC (UN R10) with participation from respective GRs experts. Next activities include continuation of discussions on electrical safety, braking, cybersecurity, and EMC; net power and electric consumption determination; Family/Parent definition; and PTI provisions. A regulation draft for EV retrofit will be delivered as an informal document to the next GRPE session in October, with adoption expected in the first half of 2027.

Response to EPPR group questionnaire on legislative gaps in the transposition of GTR 2 into UN R40.

Responses to EPPR questionnaire on legislative gaps in the transposition of the GTR 2 into UN R40.

Responses to EPPR questionnaire on legislative gaps in the transposition of GTR 2 into UN R40.

Responses to EPPR questionnaire on legislative gaps in the transposition of GTR 2 into UN R40.

Responses to the EPPR questionnaire on legislative gaps in the transposition of GTR 2 into UN R40.

Responses to the EPPR questionnaire on legislative gaps in the transposition of GTR 2 into UN R40.

The Informal Working Group on EV/HFCV Retrofit Systems held its ninth meeting on 11th June 2026. The group discussed electrical safety, cybersecurity, braking, EMC, power determination, battery range, and the overall approval concept for retrofit systems. Discussions covered UN Regulations 100, 155, 13/13-H, 10, 85, 177, 154, and 138. The group agreed to approve retrofit systems together with compatible vehicle families and to exclude hydrogen fuel cell provisions pending further technical input. RME agreed to coordinate benchmarking exercises on power thresholds and range/durability requirements. Future meetings were scheduled for 2 July 2026, 9 September 2026, and 8–9 October 2026.

This consolidated draft text proposes uniform provisions for approving vehicles transformed into electric vehicles (EV) or hydrogen fuel cell vehicles (HFCV) with electric powertrain retrofit systems. The regulation defines retrofit systems as all devices and components necessary to operate vehicles in electric mode, including powertrains, energy storage systems, management systems, and vehicle inlets. It specifies application procedures, marking and approval requirements, technical specifications for retrofit systems, installer qualifications and authorization, conformity of production procedures, modification and extension of approvals, and penalties for non-compliance. The regulation applies to vehicles of categories M and N and requires compliance with relevant UN Regulations including those addressing electromagnetic compatibility, braking, power measurement, and electric powertrains. Specific technical requirements address surveillance systems, anti-tampering provisions, performance parameters, dimensional and mass tolerances, and acoustic devices.

The Classic Car Retrofit Consortium represents SMEs performing small-series and classic car retrofits, averaging around 10 vehicles per year. The current draft regulation applies OEM-level type-approval logic designed for large-series fleet retrofits, which would eliminate the existing SME sector without materially improving safety. Specific challenges include destructive REESS testing costs of approximately 100,000 EUR per battery pack type, full-vehicle EMC testing costs around 30,000 EUR per car, and cybersecurity requirements unsuitable for classic vehicles. CCRC proposes either clarifying the regulation’s scope to exclude classic car retrofits, or developing a tailored regulatory framework specifically for classic cars produced in small numbers.

The 42nd IWG on A-LCA session met to review the document package for GRPE submission. The group discussed three submission options: a working document with open issues; agreed provisions only with open issues in a separate informal document; or agreed provisions only with open issues remaining within the IWG. No final decision was taken. Further discussions are required on Pre-consumer Scrap, Chain of Custody, Electricity Modelling, OVC-HEV, FCV, Battery and Powertrain Replacement. A dedicated electricity modelling meeting will be held on 30 June 2026, and the 43rd session is confirmed for 6 July 2026.

Three options are presented for the document package. Option 1 proposes a Working Document to be submitted by 22 July 2026, with non-agreed items excluded from both memorandum and Informal Document, and a new section created to record non-agreement items. Option 2 proposes a Working Document submitted by 22 July 2026 and an Informal Document drafted by interest parties including Japan for submission during the 95th GRPE in October, titled Interim Guidance for A-LCA to assist practitioners with CFP calculation. Option 3 proposes a Working Document submitted by 22 July 2026 and an Informal Document produced by A-LCA IWG for submission during the 95th GRPE in October, with the same title and aim.

The provisional agenda for the tenth meeting of the Informal Working Group on EV/HFCV Retrofit Systems on Thursday 2nd July 2026 includes adoption of the agenda, approval of minutes, 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, and WP.29-199-16, electrical safety review, braking, EMC, power determination and battery range, UN Draft, and any other business, with subsequent meetings scheduled for 9th September online and 8th October online.