Open Fuel Standard Act of 2011 - Requires each fleet of a manufacturer of passenger automobiles (including light-duty motor vehicles) to comprise at least: (1) 50% qualified vehicles in model year 2014, (2) 80% qualified vehicles in model year 2016, and (3) 95% qualified vehicles in model year 2017 and each subsequent year.
Defines "qualified vehicle" as: (1) a vehicle that operates solely on natural gas, hydrogen, or biodiesel; (2) a flexible fuel vehicle capable of operating on gasoline, E85, and M85; (3) a plug-in electric drive vehicle; or (4) a vehicle propelled solely by fuel cell or by something other than an internal combustion engine.
Authorizes a manufacturer to request an exemption from such requirement from the Secretary of Transportation (DOT).