Minutes of the twelfth meeting of the IWG on EV/HFCV Retrofit Systems held 28 September 2026. The group adopted the provisional agenda and reviewed the work program, aiming to provide GRPE with a first draft of a future UN Regulation by 14–16 October 2026. The group focused on revising definitions in the draft UN Regulation, particularly EPRS definition, EPRS type, vehicle family, and installer provisions. Key unresolved issues include which components must remain identical within an approved type, alternative ways of grouping vehicles within a family, whether installer requirements should be included in the UN Regulation, and the scope regarding vehicles subject to UN Regulations Nos. 155 and 156.

Proposal to amend Annex 4, paragraph 9.8.3. to clarify that the ‘OBM transmission hash validity status’ indicates hash function computation completion, and amend Annex 5, paragraph 2.2.4.3. to correct quotation mark placement for consistency with other parts of the Regulation.

Draft agenda for the first session of the Task Force on the 03 series of amendments to UN R40, scheduled for 9 October 2026. The session will include welcome remarks, introduction of participants, adoption of the draft agenda, and introduction of the Task Force establishment proposal. IMMA will present an overview of the 02 series of amendments based on UN GTR No. 2. The Task Force Co-Chairs will introduce a proposal on conducting discussions on the 03 series, addressing the regulation progressively with Co-Chairs defining specific sections for analysis at each meeting. The basis for discussions is the draft R40.03 submitted by IMMA. Future Task Force sessions are scheduled before EPPR sessions in November 2026, January 2027, February 2027, and June 2027.

Proposal to amend Appendix 5 (Devices for monitoring on board the vehicle the consumption of fuel and/or electric energy) of Working Document ECE/TRANS/WP.29/2026/153 to specify parameters to be determined, stored and made available by OBFCM devices for pure ICE and NOVC-HEVs, OVC-HEVs, PEVs, NOVC-FCHVs, OVC-FCHVs, and mono-fuel gas vehicles. The modification excludes a manufacturer-specific parameter and aligns with international standards for OBFCM requirements.

Explains the proposal 95-15

Proposal to amend Annex A1 points 3.2.12.2.10.2. to 3.2.12.2.10.5. to clarify that information on periodically regenerating systems is not applicable when a Declaration of Compliance for Regeneration Requirements is used, amend Annex A1 points 3.2.20.2.5. to 3.2.20.2.7.1. to clarify that information on heat storage and Ambient Temperature Correction Test is not applicable when a Declaration of Compliance for the ATCT is used, amend Annex A1 points 9.10.5., 9.10.5.5., 9.10.5.6. and 9.10.5.7. to limit applicability of heating system information to vehicles subject to Annex B10, and add explanatory notes (t), (u), and (v).

Proposal to amend para. 6.7.2.2. of Annex B4 to clarify the use of aerodynamic force values for body components and optional equipment, amend para. 3.2.3.2.2.3. of Annex B7 to update terminology from optional equipment to body components and/or optional equipment and to expand the alternative method to Level 1B, and amend para. 3.2.3.2.2.3.2.1. to require manufacturers to declare identifying information for simulation software and calculation conditions to be documented in test reports and agreed with the responsible authority.

Proposal to amend para. 6.2.4. of Annex B4 to separate force measurement accuracy verification from other measurements taken at three-monthly intervals, requiring force measurement accuracy to be verified upon initial installation, after major maintenance and within 370 days before testing, and to require that each combination of wind speeds used for road load determination be validated separately.

Proposal to amend para. 1.1.3. to remove language requiring agreement with authorities regarding methods for customer values when specific methods are applied, delete redundant text already described in para. 1.1.1., and amend paras. 2.1.2. and 3.1.2. to clarify that usable battery energy values including UBE measured are considered as positive values.

Provisional agenda for the 35th meeting of the AVRS Task Force scheduled for 12 October 2026, including adoption of agenda, review of minutes from the previous meeting, discussion of a proposal for a Supplement to the 02 and 03 series of amendments to UN R154, discussion on ADS vehicles and their energy consumption and continuation of the Task Force mandate, a status report on GRPE-95, and any other business.

Joint OICA and CLEPA workgroup presentation on industry guidelines for life cycle assessment of passenger cars and parts. The guidelines establish a common global methodology for LCA data exchange along the supply chain, independent of regulatory development. Key technical points include defining functional units for passenger cars and a declared unit for parts, specifying primary and secondary data requirements, addressing chain of custody through aligned models and mass balance approaches, allowing mixed energy modelling approaches with market-based modelling for decarbonisation efforts, introducing representative vehicles for full vehicle LCA reporting, and introducing representative parts to simplify supplier reporting to OEMs.

OICA presents comments and proposals on UN GTR 25 discussion items for the 100th session of the EVE informal working group. Topics include test procedures and approaches, a standardized 50 km virtual driving distance for Power Take-Offs, simplification of calculation formulas, a PTO family concept with predefined power classes, handling of body builder PTOs, minimum power thresholds, High Power Resistor energy consideration, measurement accuracy, and default values for auxiliaries. OICA indicates agreement on certain items, identifies areas requiring correction or further discussion, and outlines Phase 3 priorities.

JRC contribution to the EVE IWG on GTR No. 25 virtual distance verification. The document presents verification procedures based on energy throughput and virtual distance for stationary and dynamic tests. It discusses reading on-board values including virtual distance, propulsion energy, total energy throughput, and odometer readings. The document identifies outstanding questions regarding feasibility of using on-board values versus measured values, separation of stationary and dynamic test cases, and measurement approaches for V2X, PTO, and non-traction purposes energy.

Proposal to amend GTR 25 by modifying requirements for State-of-Certified Energy (SOCE) monitors, battery performance, and in-use verification procedures for heavy-duty electrified vehicles. The amendment refines test procedures for usable battery energy determination through four methods (Methods 1a, 1b, and 2, and an alternative chassis dynamometer method), updates measurement requirements and accuracy specifications, clarifies vehicle selection criteria during certification and Part A verification to establish worst-case configuration by highest UBE value, increases temperature tolerance during test soak to 7°C for improved applicability, revises Annex 2 to reflect additional regional regulatory requirements, and improves descriptions of test methods to enhance applicability and accuracy of results. Implementation occurs following entry into force as specified in regional provisions.

Agenda items include review of meeting minutes, overview of amendments to Brakes GTR 24 and UN R179, HD brakes and inertia considerations, projects on tyres and brakes including brake emissions from Phase 2 of the DfT Brake and Tyre Emissions Programme and characterization of brake particle emissions from electric vehicles, preliminary results of CPC inter-laboratory exercise on calibration materials, and any other business.

Proposal to amend para. 2.45. to clarify that usable battery energy including UBEmeasured is considered as a positive, and amend para. 3.1.2. to specify that measured SOCR and measured SOCE values shall be determined by dividing measured values for electric range and UBE by certified values for electric range and UBE respectively, expressed in per cent, and that indicator values collected after the verification test procedure shall not be considered in the Part A verification.

Proposal to clarify applicable FCV test procedure, align run-in provisions with UN-R154, add SOC correction and modern hydrogen measurement provisions, correct inconsistencies, update hydrogen fuel specifications, and replace outdated UN GTR No. 15 reference in UN-R101 with UN-R154 for alternative road load determination.

Proposal to amend para. A.1.3.2.1. to modify the PEMS consistency check of exhaust mass flow and gas concentrations for fuels with a molar carbon to hydrogen ratio of 0. For such fuels, the formula in para. 8.4.1.6. of Annex 4 shall be used instead, with Equations 30 and 31 applied for Type 1A dual-fuel hydrogen engines. The verification shall not apply to engines operated on non-carbon fuels or dual-fuel engines when operated in dual-fuel mode with at least one fuel having a molar carbon to hydrogen ratio of 0.

Draft amendments to the proposal to include testing of vehicles with limited speed (GRPE/2026/32). The document provides specifications for brake emissions testing including test-system requirements, climatic conditioning, brake dynamometer setup, sampling procedures, and data analysis methods for measuring particulate matter and particle number emissions from friction brake systems on light-duty vehicles.

Draft amendments to the proposal to improve and correct the procedure for measuring laboratory brake emissions on light-duty vehicles (GRPE/2026/30). The document establishes scope and application for vehicles of category M₁ and N₁, defines abbreviations and symbols, sets compliance requirements with emission limits for PM10, and specifies test procedures including cooling adjustment, brake bedding, and emissions measurement sections using the WLTP-Brake cycle. It addresses brake corner emission families, type approval requirements, conformity of production testing at least once every 12 months with statistical pass/fail decision charts, and conformity assessment through verification procedures.

Proposal to amend GRPE/2026/53, establishing a new UN Regulation transposing UN GTR No. 24 for the approval of non-original and identical replacement brake parts (pads, linings, discs, drums) for vehicles of categories M₁, N₁, and N₂ with maximum mass between 3.5 and 5 tonnes.

Proposal to amend GRPE/2026/31 revising the methodology for measuring brake particle emissions from light-duty vehicles.

Document presents an overview of brake force distributions (BFD) installed on light commercial vehicles (LCV) across different OEM applications and vehicle categories, showing front axle and rear axle percentage distributions for vehicles of category N₁ and N₂ with various gross vehicle weights ranging from 3.5 to 5.5 tonnes.

Proposal to introduce UBE_certified in the templates for the information document and WLTP test report under Annex A1 to UN R154. The proposal requests clarification on the number of significant figures for Usable Battery Energy of the vehicle at certification in the information document and seeks confirmation that the test result needs to be within 2 per cent of the declared value in the WLTP test report.

Proposal to amend GRPE/2026/29, establishing a globally harmonized laboratory methodology for measuring brake particulate matter (PM) and particle number (PN) emissions from heavy-duty vehicles of categories M₂, M₃, N₂, N₃, and O₃, O₄.