The 1st generation Porsche Cayenne Turbo had 450 horsepower (340 kW), and acceleration from 0 to 60 mph (97 km/h) was in 5.3 seconds. A Cayenne Turbo S version was built back in 2006 to compete with the Mercedes-Benz ML63 AMG. The Cayenne Turbo S included a low-range case, a locking differential, and the height-adjustable, off-road suspension. The car was powered by a twin-turbocharged 4.5-liter V8 that produced 520 bhp (390 kW) and 700 N·m of torque. Accelerated from 0-60 mph (96 km/h) in 5.0 seconds and its top speed was 171 miles per hour.A new Porsche Cayenne Turbo was revealed at the 2008 Beijing auto show. It had 50 hp (37 kW) more power, and now accelerating from 0-60 mph (96 km/h) in just 4.9 seconds. Also revealed with the new Turbo was a new 550 horsepower (410 kW) Turbo S. Acceleration from 0-60 mph is 4.7 seconds and has optional ceramic composite brakes.