From inside (document excerpt):
2010 Mercedes-Benz S-Class Brochure models: S 400 HYBRID, S 550 V-8 and S 600 V-12. Free PDF Download.
Perhaps the only car in the world that doesn’t aspire to be something else
Hybrid 3.5-liter gasoline V-6 + electric motor, 295 combined hp, 284 combined lb-ft net torque
S 400 HYBRID Transmission 7-speed automatic
Wheels 18″ split 7-spoke1 Suspension AIRMATIC semi-active, Adaptive Damping System Drivetrain Rear-wheel drive
Engine 5.5-liter gasoline V-8, 382 hp @ 6,000 rpm, 391 lb-ft net torque @ 2,800–4,800 rpm
S 550 Transmission 7-speed automatic
Wheels 18″ 5-spoke1 Suspension AIRMATIC semi-active, Adaptive Damping System Drivetrain Rear-wheel or 4MATIC all-wheel drive
Engine 5.5-liter twin-turbo gasoline V-12, 510 hp @ 5,000 rpm 612 lb-ft net torque @ 1,800–3,500 rpm
S 600 Transmission 5-speed automatic
Wheels Staggered-width 18″ 5-spoke Suspension Active Body Control (ABC) with crosswind stabilization Drivetrain Rear-wheel drive
An automatic engine stop-start system and energy recuperation while the vehicle is braking help the clean, quiet S 400 HYBRID deliver outstanding fuel economy. Enhanced for crosswind stability, available Active Body Control (ABC) instantly adapts every time each wheel moves up or
down, balancing comfort with composure.
The S 550 offers the all-season, all-road confidence of 4MATIC all-wheel drive. It’s compact and lightweight, for sporty, balanced handling on dry roads, too.
Models with AIRMATIC suspension feature a new Direct-steer system. It offers crisper feedback in sharp turns and easier parking, yet keeps minor moves smooth and stable.