Flexible
Fuel Vehicle (FFV)
A
Flexible Fuel Vehicle (FFV) is a vehicle that can run on gasoline,
E85 (85% ethanol, 15% gasoline), or a mixture of both. In
the US, FFVs qualify as alternative fuel vehicles (AFVs) under
the Energy Policy Act of 1992 (EPAct). A variety of vehicle
makes and models of FFVs are available.
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.
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