The car I drive has a 4 cylinder motor.If I go on a trip and drive 60 mph, that car will get almost 35 mpg.At 70 mpg or in city driving,that mileage drops to 23 mpg.In my truck,at 57mph,is what I usually drive,I get almost 7 mpg.Anything over 65 and the mileage drops drastically,under 5mpg