888-244-9105 Mustang keeps the attitude coming with an impressive lineup of engines. There's the Shelby GT500 with the most powerful production V8 engine in the world - a 662-hp supercharged 5.8L capable of more than 200 miles per hour on the track. Discover a 305 horsepower, 31 highway mpg V6 and the 5.0L V8 that pumps out a potent 420 horsepower and 390 lb.-ft. of torque.