The GranTurismo is powered by a 405 horsepower 4.2-liter V8 engine with a 6-speed ZF automatic transmission, while the GranTurismo S coupe's and convertible's 4.7-liter V8 puts out 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. A wide variety of alloy wheels, brake caliper colors, and leather and wood trims are available.The Maserati GranTurismo coupe and convertible are essentially carried over for 2011. Black headlamp surrounds are now standard on coupes, and the S Automatic trim features new side sills, new wheels and an extension to the front fascia.