The BMW M550i xDrive is a high-performance sedan that has been engineered by BMW’s M Performance division. It is powered by a 4.4-liter V8 engine that produces an impressive 455 horsepower and 480 lb-ft of torque. The car is also equipped with BMW’s xDrive all-wheel-drive system for enhanced traction and handling. In addition, the M550i xDrive comes with a number of M Performance parts and features, such as an M Sport exhaust system, M Sport brakes and suspension, and M Sport styling.