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Flex Fuel Finder
"We’ve been avid supporters of ethanol since the 70's and we have been selling ethanol-enhanced gas for over 40 years. Several years ago, we put in E85 and in 2008 we decided to offer more choices at the pump by installing blenders that offer E20, E30, E40 and E85. We want to support the organizations that support us and that's why we believe in the mission of
Growth Energy."
- Ken Kornkven, Manager of Farmers Union Oil, Portland, North Dakota

Flex Fuel Vehicles


Half of all U.S. vehicles made today are flex fuel ready

FFVs are specially designed to run on regular unleaded or any ethanol fuel blend up to 85 percent. Special on-board diagnostics “read” the fuel blend, enabling drivers to fuel with E10, E15, E20, E30, E40, E50 or any ethanol blend up to E85, or regular unleaded if E85 is not available. Therefore, any part of the engine which comes in contact with the fuel has been upgraded to tolerate alcohol. Normally, these parts include an upgraded fuel system with alcohol compatible parts. Today, Chrysler Corporation, Ford Motor Company, General Motors, Nissan and Toyota all offer flexible fuel engines as standard equipment in certain vehicles — at no additional cost to consumers. Each FFV comes with the same factory warranties as gasoline vehicles.

What are the differences between a FFV and a regular gasoline-only model?

The significant difference is the fuel sensor which detects the ethanol-to-gasoline ratio. A number of other parts on the FFV’s fuel delivery system are modified to be E85 compatible. The fuel tank, the fuel lines, fuel injectors, computer system and anti-siphon device have been slightly modified. Alcohol fuels can be more corrosive to certain metals than gasoline; therefore, fuel system parts have been upgraded for high level ethanol use.

Download a PDF of current FFVs.