What is a Flexible Fuel Vehicle?

Flexible fuel vehicles (FFVs) are capable of operating on gasoline, E85 (85% ethanol, 15% gasoline), or a mixture of both. FFVs qualify as alternative fuel vehicles (AFVs) under the Energy Policy Act of 1992 (EPAct). They also qualify for AFV tax credits and can provide emissions benefits.

Unlike natural gas and propane bi-fuel vehicles, flexible fuel vehicles contain one fueling system, which is made up of ethanol compatible components and is set to accommodate the higher oxygen content of E85. E85 should only be used in ethanol-capable FFVs.

Other than fueling capability and ethanol compatible components, FFVs are similar to their conventional gasoline counterparts. Their power, acceleration, payload, and cruise speed are comparable whether running on ethanol or gasoline. The only noticeable difference: fuel economy is lower when FFVs run on ethanol.

Interested in Buying an FFV?

  • Find an FFV and compare specifications
  • Find E85 fueling stations near you
  • See how fueling an FFV with E85 impacts fuel costs and tailpipe emissions by using the FFV Cost Calculator
  • View incentives that may apply to FFV purchases
  • Fleet Managers: Go to the Fleet Applications section to learn how FFVs can be implemented in your fleet, or visit the E85 Infrastructure section to learn how to install or convert existing infrastructure. www.afdc.energy.gov

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