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.
Chevrolet achieves this fuel economy by equipping the Impala with a 2.5-liter engine that delivers 195 horsepower at 6,300 revolutions per minute. This inline four-cylinder engine uses a double-overhead cam and features 16 valves and variable-valve timing. The six-speed automatic transmission gives the driver the option to shift this front-wheel drive vehicle manually. Chevrolet offers buyers a five-year or 50,000-mile drive-train warranty on top of its basic three-year or 30,000-mile warranty.