The BMW X6 M and BMW X5 M are the first xDrive all-wheel-drive vehicles from the M GmbH. The vehicle was unveiled in 2009 New York Auto Show.
The high-performance M derivative features a twin scroll twin turbo version of the 4.4-liter V8 BMW N63 engine with Cylinder-bank Comprehensive Manifold (CCM). Engine is rated 555 PS (408 kW; 547 hp) at 6000 rpm and 680 N·m (500 lb·ft) at 1500-5650 rpm.
Other features include 6-speed M Sports Automatic transmission with aluminum pull-style paddles on steering wheel, M Dynamic Mode feature, 10 mm (0.4 in) lower Adaptive Drive suspension, 4-piston fixed calipers with 15.6" rotor at front and single piston floating calipers with 15.2" rotor at rear, 20-inch alloy wheels with 275/40R20 front and 315/35R20 run flat tires, special gills in the front fenders, 20-inch light-alloy wheels.
The car can accelerate from zero to 60 mph (0–97 km/h) in 4.5 seconds and 0-62 mph (0-100 km/h) in 5 seconds