Industry guidelines developed jointly by CLEPA and OICA to provide a harmonised methodology for determining the carbon footprint of passenger cars through their full life cycle, from material extraction through production, use, and end-of-life. The guidelines establish four levels of assessment based on data granularity and intended application (ranging from public policy analysis to detailed supply-chain reporting), with fixed methodological approaches for Levels 3 and 4. They specify treatment of GHG emissions including biogenic carbon, land use change, and fossil emissions; define data quality requirements including primary data collection and allocation procedures; and establish system boundaries across material production, parts and vehicle assembly, use, and end-of-life stages, employing the Circular Footprint Formula for material recycling assessment.

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.

The A-LCA IWG has decided not to submit a Working Document due to inability to reach agreement on outstanding issues. The IWG requests GRPE review and acceptance of revised Terms of Reference reflecting a shift toward information and technical exchange rather than developing a Resolution. Key unresolved contradictive issues include definitions, system boundaries, chain of custody, electricity modelling, prospective energy modelling, use stage provisions, deterioration factors, methane leakage, and methodologies for component replacements. Future activities will shift to information exchange with reduced meeting frequency pending establishment of a clear timeline for developing A-LCA methodology.

Terms of reference for the IWG on A-LCA, which will develop an internationally harmonised procedure to determine the carbon footprint of automotive products across their life cycle from production to use and disposal. Working items include defining scope according to ISO 14040, conducting inventory analysis, and defining the format and minimum contents of the A-LCA report. The IWG mandate ends in December 2026, with possible adoption of the resolution by WP.29 in November 2026. The group 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.

Industry guidelines developed jointly by CLEPA and OICA to provide a harmonised methodology for determining the carbon footprint of passenger cars through their full life cycle, from material extraction through production, use, and end-of-life. The guidelines establish four levels of assessment based on data granularity and intended application (ranging from public policy analysis to detailed supply-chain reporting), with fixed methodological approaches for Levels 3 and 4. They specify treatment of GHG emissions including biogenic carbon, land use change, and fossil emissions; define data quality requirements including primary data collection and allocation procedures; and establish system boundaries across material production, parts and vehicle assembly, use, and end-of-life stages, employing the Circular Footprint Formula for material recycling assessment.

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.

The A-LCA IWG has decided not to submit a Working Document due to inability to reach agreement on outstanding issues. The IWG requests GRPE review and acceptance of revised Terms of Reference reflecting a shift toward information and technical exchange rather than developing a Resolution. Key unresolved contradictive issues include definitions, system boundaries, chain of custody, electricity modelling, prospective energy modelling, use stage provisions, deterioration factors, methane leakage, and methodologies for component replacements. Future activities will shift to information exchange with reduced meeting frequency pending establishment of a clear timeline for developing A-LCA methodology.

Terms of reference for the IWG on A-LCA, which will develop an internationally harmonised procedure to determine the carbon footprint of automotive products across their life cycle from production to use and disposal. Working items include defining scope according to ISO 14040, conducting inventory analysis, and defining the format and minimum contents of the A-LCA report. The IWG mandate ends in December 2026, with possible adoption of the resolution by WP.29 in November 2026. The group 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.

Industry guidelines developed jointly by CLEPA and OICA to provide a harmonised methodology for determining the carbon footprint of passenger cars through their full life cycle, from material extraction through production, use, and end-of-life. The guidelines establish four levels of assessment based on data granularity and intended application (ranging from public policy analysis to detailed supply-chain reporting), with fixed methodological approaches for Levels 3 and 4. They specify treatment of GHG emissions including biogenic carbon, land use change, and fossil emissions; define data quality requirements including primary data collection and allocation procedures; and establish system boundaries across material production, parts and vehicle assembly, use, and end-of-life stages, employing the Circular Footprint Formula for material recycling assessment.

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.

The A-LCA IWG has decided not to submit a Working Document due to inability to reach agreement on outstanding issues. The IWG requests GRPE review and acceptance of revised Terms of Reference reflecting a shift toward information and technical exchange rather than developing a Resolution. Key unresolved contradictive issues include definitions, system boundaries, chain of custody, electricity modelling, prospective energy modelling, use stage provisions, deterioration factors, methane leakage, and methodologies for component replacements. Future activities will shift to information exchange with reduced meeting frequency pending establishment of a clear timeline for developing A-LCA methodology.

Terms of reference for the IWG on A-LCA, which will develop an internationally harmonised procedure to determine the carbon footprint of automotive products across their life cycle from production to use and disposal. Working items include defining scope according to ISO 14040, conducting inventory analysis, and defining the format and minimum contents of the A-LCA report. The IWG mandate ends in December 2026, with possible adoption of the resolution by WP.29 in November 2026. The group 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.

Industry guidelines developed jointly by CLEPA and OICA to provide a harmonised methodology for determining the carbon footprint of passenger cars through their full life cycle, from material extraction through production, use, and end-of-life. The guidelines establish four levels of assessment based on data granularity and intended application (ranging from public policy analysis to detailed supply-chain reporting), with fixed methodological approaches for Levels 3 and 4. They specify treatment of GHG emissions including biogenic carbon, land use change, and fossil emissions; define data quality requirements including primary data collection and allocation procedures; and establish system boundaries across material production, parts and vehicle assembly, use, and end-of-life stages, employing the Circular Footprint Formula for material recycling assessment.

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.

The A-LCA IWG has decided not to submit a Working Document due to inability to reach agreement on outstanding issues. The IWG requests GRPE review and acceptance of revised Terms of Reference reflecting a shift toward information and technical exchange rather than developing a Resolution. Key unresolved contradictive issues include definitions, system boundaries, chain of custody, electricity modelling, prospective energy modelling, use stage provisions, deterioration factors, methane leakage, and methodologies for component replacements. Future activities will shift to information exchange with reduced meeting frequency pending establishment of a clear timeline for developing A-LCA methodology.

Terms of reference for the IWG on A-LCA, which will develop an internationally harmonised procedure to determine the carbon footprint of automotive products across their life cycle from production to use and disposal. Working items include defining scope according to ISO 14040, conducting inventory analysis, and defining the format and minimum contents of the A-LCA report. The IWG mandate ends in December 2026, with possible adoption of the resolution by WP.29 in November 2026. The group 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.