The GranTurismo Sport coupe is powered by a 454 horsepower 4.7-liter V8 engine with a 6-speed ZF automatic transmission, while the MC coupe's and Sport convertible's 4.7-liter V8 puts out 444 horsepower and the base convertible 4.7-liter V8 produces 433 horsepower. An electronically-controlled Skyhook suspension automatically adjusts to the conditions of the road. Standard features include Brembo brakes, directionally-adaptive bi-xenon headlights, heated power sport seats, automatic dual-zone climate control, rear parking sensors and a Bose sound system with hard drive and navigation system. The MC includes revised transmission shifting, a tuned exhaust system, sport suspension combined with a special stability program, and unique front and rear fascia and side skirts. The Sport convertible features a modified Skyhook sport suspension, 20-inch alloy wheels, slotted brake discs, a revised exhaust system, and black headlight assembly. The new-for-2013 Sport coupe includes a Sport Skyhook suspension, unique front and rear fascia, redesigned xenon headlamps now incorporating bright LED daytime running lights, dark-tinted rear taillamps, front and rear parking sensors, new front and rear seats, unique interior trim and a redesigned steering wheel. A wide variety of alloy wheels, brake caliper colors, and leather and wood trims are available on all trims.For 2013, the GranTurismo coupe Sport trim replaces the S Automatic trim. The GranTurismo convertible is carried over.