The all-wheel drive, five-passenger Porsche Cayenne is available in a V6, an S, a GTS, a Turbo and a Turbo S trim. The V6 is powered by a 290-hp 3.6-liter V6 engine. The S and the GTS are powered by a normally aspirated 4.8-liter V8 with 385-hp for the S and 405-hp for the GTS. The Turbo and Turbo S are powered by a twin-turbocharged 4.8-liter V8 with 500-hp for the Turbo and 550-hp for the Turbo S. Notable features available on the Cayenne include: Porsche Stability Management (PSM), Porsche Active Suspension Management (PASM), Porsche Dynamic Chassis Control (PDCC), a conventional moonroof or a panoramic roof system, Bi-Xenon headlamps, power memory seats, 4-zone climate control and a Bose surround sound system.For 2010, a race-inspired limited edition 'S Transsyberia' model is available. It's based on the S trim, but includes the 385-hp V8 from the GTS, it also includes the full air suspension system, Alcantara seat and steering wheel trim, and unique exterior color combinations.