The S65 AMG is a performance-tuned version of the S-Class. Power is delivered from a 604 hp 6.0-liter V-12 engine mated to a five-speed automatic transmission with manual gear select. It comes standard with performance items like 20-inch wheels, height adjustable shocks, and auto-leveling suspension. The new S-Class safety package is unequalled in the class, with all the usual brake and airbag technology upgraded and Pre-Safe accident-readiness equipment made standard. The Electronic Stability Program is back as standard equipment, with two new features: trailer stabilization, and tire-pressure monitoring.The Mercedes-Benz S-Class is fully re-designed for 2007.