If you have ever gone car shopping you have no doubt heard about EPA gas mileage. This is a figure that is determined by the Federal government, which is intended to properly inform consumers about the approximate gas mileage of all vehicles. The epa gas mileage of a vehicle is typically presented in two different forms. The first is the city driving miles, which will take into account stopping, starting and slower driving. The other is highway miles. This will be based on a much smoother style of driving, as well as higher speeds. These figures are extremely useful when car shopping to get the car best suited to your needs.