Terms of Reference establishing the IWG on A-LCA under GRPE to develop an internationally-harmonised procedure to determine the carbon footprint of different automotive technologies from production to use and disposal as a resolution under WP.29. Working items include defining scope, inventory analysis methodology, and A-LCA report format. The group’s mandate ends in December 2026 with possible adoption of the UN Resolution by WP.29 in November 2026. The IWG is open to all experts from any country or organisation of WP.29, chaired by Japan and Republic of Korea, with technical secretaries from OICA, E-Mobility Europe and Japan.
The A-LCA IWG proposes to enter an Information/Technical Exchange phase following the 95th GRPE session, with activities including reference to currently available methodologies, maintenance of the compile document, study of methodologies to check linearity of GHG emissions against vehicle maths in the same LCA family, and any other items proposed by members. The IWG will report status during every GRPE session. Phase 2 is planned from October 2026 to April 2027, with a request for extension of one year once GRPE recognises a clear time schedule for A-LCA methodology development.
A presentation on industrial retrofit as a transition solution for decarbonizing the existing vehicle fleet. Industrial solutions are available and scaling up, but lack of harmonized regulatory requirements is hindering deployment. Differences in national regulatory frameworks directly affect retrofit sector development across countries. Testing at vehicle level is necessary to account for retrofit system impacts. A forthcoming UNECE Regulation should provide a clear approval framework, establish a streamlined approval process, and ensure mutual recognition of approvals granted by Contracting Parties.
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.
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.
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.
Japan presents positions on working documents for UN R168 (Real Driving Emissions). Japan does not accept the Level 1C concept, proposes deleting the type-approval scheme for equipment to eliminate unnecessary burden, and recommends adding technical requirements for laboratory equipment instead. Japan expresses technical concerns regarding sampling line temperature limits, text structure requiring restructuring, and hydrogen ICE provisions including dry-wet correction applicability and trip validity methods for bi-fuel vehicles.
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.
United Nations Economic Commission for Europe