How Many Gallons of Gas Does a Chevy Impala Hold?

The 2014 Chevrolet Impala has an 18.5-gallon gas tank. With an EPA mileage estimate of 21 miles per gallon for city driving and 31 miles per gallon for the highway, it has a range of over 500 miles on a single highway fill-up. This vehicle uses regular unleaded gasoline.