The Porsche Cayenne Turbo S was the top variant offered for the 957 Cayenne. The performance focused 957 Cayenne Turbo S was introduced for the 2009 model year, and featured a range of upgrades and improvements over the standard model, with the most notable being the powerplant. The 957 Turbo S was fitted with a 4.8L twin-turbo V8 engine that had an output of 542hp and 553 lb ft of torque and sent drive to all four wheels via a 6 speed automatic transmission. Production of the 957 Cayenne Turbo S ended in 2010 with the introduction of the Second Generation Porsche Cayenne.