BMW X6 M
The modern, sustainable legacy of BMW M GmbH began in 1985 when engineers placed the snarling, race-bred inline-6 engine from the M1 supercar into the production BMW 5 Series sedan, reworked the suspension and brakes, and created the first M5. Through this industry-first combination of attributes, the M5 redefined the capabilities of a sedan with levels of power, precision, balance, and linear control never before imaginable. Since then, finding new ways to expand the boundaries of what is possible with existing BMW models has been the singular purpose of the craftsmen at BMW M. Now the BMW X5 M and the BMW X6 M are the first all-wheel-drive models to offer the remarkable performance, dynamic driving experience, athletic design, and premium quality of a BMW M product.
Both models are powered by a newly-developed 4.4-liter V8 M engine delivering 555 hp at 6,000 rpm and 500 lb-ft of torque from 1500 to 5,650 rpm. This new M engine is the world's first with a pulse-tuned exhaust manifold encompassing both rows of cylinders combined with high-performance twin-scroll twin turbo technology.
For the X5 M and X6 M, engineers at BMW M pushed the capabilities of BMW's intelligent xDrive all-wheel-drive system and the Dynamic Performance Control system to manage the power and performance potential of these two new vehicles. The special M suspension includes Adaptive Drive and newly-developed Servotronic power steering.
These features combine to push the limits of what was previously possible with a sports-oriented vehicle, and guarantee driving behavior characteristic of a BMW M product: incredible stability and precisely controlled steering qualities abound throughout the performance envelope.
Source: BMW press