To amend chapter 329 of title 49, United States Code, to ensure that new vehicles enable fuel competition so as to reduce the strategic importance of oil to the United States.

Open Fuel Act of 2017 This bill requires each fleet of a manufacturer of passenger automobiles (including light-duty motor vehicles) to be comprised of at least: 50% qualified vehicles in model year 2020, and 80% qualified vehicles in model year 2021 and each subsequent year. A "qualified vehicle" is: a vehicle that operates on natural gas, hydrogen, or biodiesel; a flexible fuel vehicle capable of operating on gasoline, E85, and M85; a plug-in electric drive vehicle; or a vehicle propelled solely by fuel cell or by something other than an internal combustion engine. The bill authorizes: (1) a manufacturer to request an exemption from such requirement for specified models, lines, and types of automobiles; and (2) the Department of Transportation to grant such an exemption upon determining that unavoidable events prevent the manufacturer from meeting its required production volume of qualified automobiles.