As of 2014, there are more than 100 different vehicle models available in the United States that are able to use E85 gasoline-ethanol blend as fuel. These vehicles can run on either normal gasoline or a mixture of gasoline and up to 85 percent ethanol that is known as E85. Their ability to use either fuel is why they are often referred to as "flex fuel vehicles."
E85 has been in use since the 1990s. A normal gasoline engine requires very little modification to run on E85, which is why their production has continued to dramatically increase over the years. All of the major American car manufacturers now produce a wide range of E85 cars, trucks and vans, including Chevrolet, Dodge and Ford. Most foreign companies also produce E85 vehicles for the U.S. market.
Most E85 vehicles produced after 2008 feature a yellow gas cap to distinguish them, and many also have E85 stickers on the inside of the gas door. Many flex fuel vehicles also have badges on their exterior that say E85, FFV or Flex Fuel. These are typically located on the back of the vehicle, somewhere near the model name. The owner's manual should also list whether or not a vehicle can run on E85.