2011 Ford mustang convertible gas mileage Source Source Source Source Source Source Source Source Source Source Read Also: 1986 Ford mustang convertible gas mileage 2003 Ford mustang gt convertible gas mileage 2001 Ford mustang gt convertible gas mileage 1994 Ford mustang gt convertible gas mileage 1998 Ford mustang convertible gas mileage 2010 Ford mustang convertible gas mileage