- UK: New Car Fuel Consumption and Emission Figures
Vehicle Certification Agency (VCA)Emission certification and fuel consumption figures for new cars in the UK. Available as both an on-line searchable database and an Excel/Access file.
- US: Vehicle Emission Certification Information
US EPALight duty vehicles: emission certification information page.
- US: Annual Certification Test Results & Data
US EPALight duty vehicles: emission certification database.
- US: Engine Certification Information Center
US EPAEmission certification data on heavy-duty CI engines, marine SI engines, and small utility engines.
- US-California: Onroad Certification Database
California ARBEmission certification data and California Executive Orders for onroad vehicles and engines.
- US-California: Off-Road Certification Database
California ARBEmission certification data and California Executive Orders on off-road diesel engines, small off-road spark-ignition engines, and spark-ignition marine engines.