Maserati performance is only topped by its luxuriousness in the 2011 version of the venerable Quattroporte. The Quattroporte, meaning “four-doors,” is powered by a Ferrari-built, 4.7-liter, V8 delivering 440 horsepower and linked to a ZF 6-speed automatic; the GT S’s emphasis on sport driving acumen is evident. As one expects from the Italians, Maserati provides a gorgeous sounding motor. Its volume and tone can even be adjusted via a valve-controlled exhaust. In normal mode you can revel in the car’s power in near-silent luxury, but in sport mode the roar of the Ferrari-built engine will provide a concert of throaty rumblings. The quick shifting close-ratio gearbox delivers rapid power at any speed. Even though the GT S is obviously a touring saloon, its cornering aptitude will surprise you.