Debuting alongside the X3, the new BMW 645Ci Coupe promises power and performance within a breathtaking, contemporary design typical of BMW. The first BMW to wear the 6-Series badge in more than a dozen years, the new model is powered by the same 4.4-liter V-8 engine found in the luxury 745i, and offers three different six-speed transmissions, including one sequential manual gearbox. BMW promises 0-60-mph times in just 5.6 seconds, and a top speed electronically limited to 155 mph thanks in part to a judicious use of lightweight materials keeping the car at a 3528-pound curb weight. Additional niceties include an adaptive cruise control that maintains a programmed distance from the car ahead, swiveling headlights for improved visibility, and run-flat tires. Key options will include Dynamic Stability Control, Dynamic Drive suspension, and Active Steering, making the 6 Series a technological tour de force. Pricing will be announced when it debuts in the United Kingdom in December.