Flex Fuel Vehicles
Flexible Fuel Vehicles (FFVs) are powered by internal combustion engine technology that has been designed to run on gasoline or a fuel blend of up to 85% ethanol. Their name is derived from the flexible fueling options these vehicles afford drivers. Auto makers have been producing FFVs for thirty years, and today there are over 8 million on the road in the United States. These vehicles are identical to their traditional gasoline powered counterparts, with the exception of a few engine and fuel system components that are modified to accommodate the higher octane fuel. FFVs experience no loss in performance when operating on E85. The only noticeable difference is that FFVs travel approximately 25-30% fewer miles per gallon when fueled with E85, due to lower energy content per volume of the fuel.
Original Equipment Manufacturers (OEM) FFVs
Traditional gasoline vehicles can be converted to FFVs by modifying components throughout the fuel system and electronic engine-control system. In the United States, all vehicle conversions to propane, natural gas, methane gas, ethanol, or electricity are classified as aftermarket alternative fuel vehicle conversions, and must meet current applicable U.S. Environmental Protection Agency (EPA) standards. EPA instituted these standards to assure unimpaired emission control of motor vehicles throughout their useful life. Vehicles operating in California must follow conversion rules issued by the California Air Resources Board (CARB). All conversions should be done by a trained and certified technician.