The BMW Alpina B6 Gran Coupe xDrive is a high-performance luxury sedan created by BMW in collaboration with the performance tuner Alpina. It uses a 4.4-liter V8 twin-turbo engine and an xDrive all-wheel-drive system to produce an impressive 600 horsepower. The engine is mated to an 8-speed automatic transmission that provides smooth shifting, and the car can accelerate from 0-60 mph in just 3.6 seconds. The Alpina B6 also features a sporty exterior, comfortable interior, and advanced technology features.