Flexible fuel vehicles such as certain models of the Ford Focus and Dodge Dart can run on E85, a gasoline ethanol blend that can be up to 85 percent ethanol. The vehicles have moderate engine and fuel system modifications, but otherwise they are very similar to traditional gasoline-powered vehicles.
Flexible fuel vehicles have been available since the 1990s, according to Fueleconomy.gov. There are several hundred flexible fuel vehicles currently available that look exactly like their standard gasoline counterparts. These vehicles are capable of taking on both gasoline and E85. FFVs generally get lower gas mileage when running on E85, but they also show some improvements, such as an increase in torque and horsepower.
Some examples of flexible fuel vehicles include the 2014 Ford Focus SFE FWD FFV, the 2015 Chrysler 200 and the 2014 Dodge Dart. The 2014 Ford Focus gets an average of 33 miles per gallon when running on gasoline, but drops to an average of 23 miles per gallon when using E85. The 2015 Chrysler 200 averages 28 miles per gallon with gasoline and 21 miles per gallon with E85. The Dodge Dart gets an average of 27 miles per gallon using gasoline and 19 miles per gallon using E85.