What is a flexible fuel vehicle?
A flexible fuel vehicle (FFV) is specially designed to run on any ethanol blend up to 85% ethanol. Special onboard diagnostics “read” the fuel blend, enabling drivers to fuel with E85 or gasoline in any combination from a single tank. There are no switches to flip, no mixing or blending. The computer adjusts the FFV’s fuel injection and ignition timing to compensate for the different fuel mixtures.