There are six models of the 2013 Ford Mustang. While each model gets slightly different gas mileage, the range for combined highway and city gas mileage is between 18 and 23 miles per gallon.
For highway-only driving, the 2013 Ford Mustang models get a range of 24 to 31 miles per gallon. For city driving, the Mustang models get between 15 and 19 miles per gallon. The model that gets the best gas mileage is equipped with a six-cylinder, 3.7-liter engine and an automatic transmission. The model that gets the worst gas mileage has an eight-cylinder, 5.8-liter engine and a manual transmission.