An official website of the United States government.

This is not the current EPA website. To navigate to the current EPA website, please go to This website is historical material reflecting the EPA website as it existed on January 19, 2021. This website is no longer updated and links to external websites and some internal pages may not work. More information »

Regulations for Emissions from Vehicles and Engines

Final Rule for Fuel Economy Labeling of Motor Vehicles: Revisions To Improve Calculation of Fuel Economy Estimates

On this page:

Rule Summary

You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.

Final rule that set new methods for calculating fuel economy label estimates posted on window stickers of new cars and trucks for model years 2008 and beyond; and to require fuel economy labeling for medium-duty passenger vehicles beginning with the 2011 model year. These estimates help consumers compare the fuel economy of different vehicles for both city and highway driving. This new rule makes three important changes.

Rule History

Additional Resources

Fact Sheet

Regulations for Emissions from Vehicles and Engines Home