The agenda includes discussion on a document package to be submitted to GRPE, and review of the latest leading document covering general aspects, electricity/energy modeling, OVC-HEV/FCV, and battery/power train replacement.

A-LCA IWG plans to submit a Working Document by 22 July 2026 containing only items agreed by the entire IWG, with non-agreed items handled under Option 1, 2, or 3. Option 1 creates a memorandum section within the Working Document for non-agreed items. Options 2 and 3 submit the Working Document and a separate Informal Document titled Interim Guidance for A-LCA during the 95th GRPE in October, aimed at helping practitioners with CFP calculation until reserved items are resolved.

Proposal to amend para. 6.3.1. to clarify use stage system boundaries, revise para. 6.3.2.1. regarding service life methodology and regional adaptation, delete and rewrite para. 6.3.3. on use stage consumption to introduce level concepts for certification values and restructure discrepancy and deterioration factor determination, reserve sections on vehicles with dual-mode powertrains and fuel cell and OVC-HEV deterioration calculations pending further development, amend para. 6.3.3.2.2.2. addressing OVC-HEV battery degradation (reserved), add para. 6.3.6.7. on swappable parts (reserved), and update Table 14 to include parts and/or components defined by vehicle manufacturer as mandatory for Level 3/Level 4 assessments, supported by GRPE/2026/2.

Updated text for the use stage of the proposed Mutual Resolution No. 5 concerning Automotive Life Cycle Assessment (A-LCA) addressing use stage methodology, including system boundaries encompassing in-use energy consumption and GHG emissions covering well-to-tank and tank-to-wheel impacts, maintenance and consumables impacts, and leakages; defining service life values by contracting parties based on official data on vehicle age at recycling; establishing level concepts for selecting regional certification energy consumption values and determining discrepancy and deterioration factors to represent real-world performance; specifying methodologies for calculating in-use energy consumption for vehicles with single and dual-mode powertrains including off-vehicle charging hybrid electric vehicles; addressing methane, hydrogen, and fluorocarbon emissions; providing maintenance scope including consumables and maintenance parts with associated frequency determination; excluding replacement of major powertrain components by default unless justified; and requiring collection of specified activity data and GHG emission factors. Full text of the draft MR5 previously submitted as GRPE/2026/2.

A-LCA Informal Group will discuss how to deal with non-agreed items, review draft working documents, refine working documents if necessary, and finalize working documents, with a Document Package to be distributed by May 28th, draft working documents by June 19th, and working documents by July 17th, culminating in confirmation of open items at the 95th GRPE session in October.

The 41st IWG on A-LCA session (26 May 2026) discussed the document package for submission to GRPE. Japan presented approaches for handling unresolved sections through working documents and supplementary explanatory material. The United States proposed including only consensus text in working documents. No final decision was taken. The group continued review of Table 1, Chain of Custody, Electricity and Energy Modelling, OVC-HEV and FCV methodology, and battery and major powertrain component replacement, with no agreement reached on these topics. The 42nd session is scheduled for 15 June 2026 and the 43rd for the week of 6 July 2026.