The Porsche Cayenne Turbo is a high-performance luxury SUV manufactured by German carmaker Porsche since 2002. It is powered by a 4.8-liter twin turbo V8 engine that produces 500 horsepower and 516 pound-feet of torque. The Cayenne Turbo is capable of a 0-60 mph time of 4.2 seconds, making it one of the fastest SUVs on the market. It is also equipped with many of the latest driver-assistance technologies, including adaptive cruise control, lane departure warning, and a host of interior comfort features.