EPA Regional Programs


Dec. 14, 2022
U.S. Fuel Economy Maintains Record High; CO2 Emissions Reach Record Lows, and All Large Manufacturers Meet Greenhouse Gas Standards
EPA released its annual Automotive Trends Report, which shows that model year (MY) 2021 vehicle fuel economy remained at a record high while emission levels reached a record low. The report also shows all 14 large automotive manufacturers achieved compliance with the Light-duty Greenhouse Gas (GHG) standards through at least MY2020.
Key highlights of the report:

- For MY 2021, vehicle fuel economy remained at an all-time high of 25.4 miles per gallon (mpg), and new vehicle real-world carbon dioxide (CO2) emissions decreased to a record low of 347 grams per mile (g/mi).
- All vehicle types are at record low CO2 emissions; however, the market shift away from cars and towards sport utility vehicles and pickups has offset some of the fleetwide benefits.
- Since MY 2004, average fuel economy in the U.S. has increased by 32%, or 6.1 mpg.
- The average estimated real-world CO2 emission rate for all new vehicles fell by 2 g/mi to 347 g/mi, the lowest ever reported. 
- Since MY 2004, CO2 emissions have decreased 25%, or by 114 g/mi. Over that time, CO2 emissions have been reduced in 14 of the past 17 years.

This annual report is part of EPA's commitment to provide the public with information about new light-duty vehicle GHG emissions, fuel economy, technology data, and auto manufacturers' performance in meeting the agency's GHG emissions standards.

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Last Updated: July 16, 2014