Do You Have a Flex-Fuel Vehicle?

Look for the Yellow Gas CapMost manufacturers started putting yellow gas caps on FFVs as of model year 2008 (2006 for General Motors).Yellow flex-fuel gas cap Check the Fuel DoorSome FFVs have labels on the fuel door indicating fuel type.Flex-fuel label on fuel door Look for Badges on Your Vehicle’s Body

Flex-fuel badge Flex-fuel badge Flex-fuel badge
Check Your Owners ManualCheck the Vehicle Identification Number (VIN)The following Web sites provide information on identifying flex-fuel vehicles using the VIN and other methods:

  • Flexible fuel vehicles (FFVs) are designed to run on gasoline or a blend of up to 85%¬†ethanol¬†(E85). Except for a few engine and fuel system modifications, they are identical to gasoline-only models. FFVs experience no loss in performance when operating on E85. However, since ethanol contains less energy per volume than gasoline, FFVs typically get about 25-30% fewer miles per gallon when fueled with E85.
  • FFVs have been produced since the 1980s, and dozens of models are currently available. Since FFVs look just like gasoline-only models, you may be driving an FFV and not even know it.

Reference: http://www.fueleconomy.gov/feg/flextech.shtml