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 This website is no longer updated and links to external websites and some internal pages may not work.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 »

Renewable Fuel Standard Program

E85 Fuel

E85 is a blend of gasoline and denatured ethanol containing up to 85 percent ethanol and is the highest ethanol fuel blend available in the market. E85 can only be used in flex fuel vehicles (FFVs) which are specifically designed to run on this fuel or any gasoline or ethanol blend ranging from E0 to E85.  Much like diesel fuel, E85 is available at specially-marked fueling pumps.

Expanding use of E85 as a vehicle fuel would increase use of renewable fuel and reduce dependence on imported oil. E85 can also provide important reductions in greenhouse gas (GHG) emissions as compared to petroleum-derived gasoline or lower volume ethanol blends.

E85 Fuel Fact Sheets