The first-generation Cayenne Turbo had 450 PS (331 kW), and accelerated from 0 to 100 km/h (62 mph) in 5.3 seconds.[3] A Turbo S version was built in 2006 to compete with the Mercedes-Benz ML 63 AMG. The Cayenne Turbo and Turbo S included a low-range case, a locking differential, and the height-adjustable, off-road suspension. The S was powered by a twin-turbocharged 4.5-L V8 that produced 521 PS (383 kW) and 720 N·m (530 lb·ft) of torque; Acceleration from 0–60 mph (96 km/h) was 5.0 seconds and the top speed was 171 miles per hour; It featured a six-speed automatic Tiptronic transmission.