The Mercedes-Benz S65 AMG is a high-performance luxury sedan. It is a variant of the Mercedes-Benz S-Class, and is the top-of-the-line performance model in the lineup. The S65 AMG features a 6.0L twin-turbo V12 engine that produces 621 horsepower and 738 lb-ft of torque. It also features a host of performance-oriented features, including an adaptive suspension, an upgraded braking system, and an advanced all-wheel drive system. The S65 AMG is capable of 0-60 mph in 4.2 seconds and has a top speed of 186 mph.