There are currently several companies making E85 conversion kits for vehicles. Most are located overseas, but there are a few US companies that produce or re-distribute E85 conversion kits.

In 1990 the EPA Clean Air Act Amendments implemented regulations that required the exhaust emissions from vehicles converted to run on alternative fuels be “as clean as the exhaust emissions of the original gasoline equipment.”

Today, 99.9 percent of the vehicles that are capable of operating on alternative transportation fuels are produced by the original equipment manufacturers Ford, General Motors, and DaimlerChrysler. Engineers from these US companies are able to design and build vehicles that meet the EPA exhaust emission standards. These companies also are required to warranty the exhaust emissions from these vehicles for 10 years or 100,000 miles.