The 2012 Mercedes-Benz S-Class S550 4MATIC is a luxury sedan that is equipped with a range of high-tech features and powerful performance capabilities. Here are some key details about this vehicle: Engine: The 2012 S550 4MATIC is powered by a 4.6-liter V8 engine that produces 429 horsepower and 516 lb-ft of torque. It is paired with a seven-speed automatic transmission and all-wheel drive. Fuel economy: The EPA-estimated fuel economy for the 2012 S550 4MATIC is 15 mpg in the city and 23 mpg on the highway. Features: Standard features on the 2012 S550 4MATIC include leather upholstery, heated and ventilated front seats, a sunroof, a premium audio system, dual-zone automatic climate control, and a navigation system. Optional features include adaptive cruise control, a rearview camera, a night vision system, and a panoramic sunroof. Safety: The 2012 S550 4MATIC comes with a range of advanced safety features, including adaptive headlights, blind spot monitoring, lane departure warning, and a collision mitigation system. Price: The starting MSRP for the 2012 Mercedes-Benz S-Class S550 4MATIC is around $95,000. However, prices may vary depending on the vehicle's condition, mileage, and location.