This informal document is submitted by the Informal Working Group (IWG) on Environmental and Propulsion Performance Requirements of L-category vehicles (EPPR) to inform and update the GRPE of the work of the IWG on the amendment of UN GTR 18 to include OBD 2. This is the consolidated document addressing the phase 1 and 2 of the work of the IWG,
taking also into account the work of the EPPR OBD Correspondence Group.
).