Updated proposal as of 18 March 2026.

The 36th session of the Automotive Life Cycle Assessment IWG reviewed progress on a harmonised global methodology. SG7 will consolidate all comments by 1 April 2026 for line-by-line IWG review. Key unresolved items include PHEV methodology, component replacement approaches, and electricity modelling. Industry emphasised the need for a single global methodology and technology neutrality. The United States noted insufficient definition of methodological aspects. The group agreed to prioritise technical issues first, then policy-related issues, with virtual sessions in April and May. A decision point is targeted for 19 June 2026, with possible adoption at the October GRPE session. The IWG mandate extends to December 2026.

The IWG on Automotive Life Cycle Assessment reviewed open issues in the working document, focusing on bracketed text requiring resolution. Key outstanding items include primary data provisions, chain of custody, electricity modelling, use-phase emissions, PHEV provisions, and traction battery treatment. A colour-coded classification procedure was introduced for Contracting Parties to indicate positions on bracketed sections. Unresolved items will be deferred to Phase 2. Positions must be submitted by 28 February, with the next session on 5 March 2026.

This document is also available with tracked changes.