Model Strengths:
Top-of-the-line performance; great combination of elegance and road prowess; state-of-the-art transmission and engineering; a total comfort package

Model Changes:
All 2010 BMW 6-Series cars are largely unchanged from 2009. The 2010 650i 2-dr coupe starts at $78,200 and the 650i 2-dr convertible starts at $85,300. At the top of the range is the high-performance M6 model, with a 500-horsepower, 5.0L V10 engine and 7-speed sequential manual gearbox (SMG). It is again available as a hardtop 2-dr coupe, starting at $102,1000, or 2-dr convertible, which starts at $107,900.

Model Value:
The 2009 BMW 6-Series sedan stands apart from its 5-Series sibling thanks to its high-tech, performance-oriented features, which enable it to fill the double role of sports car and comfy luxury coupe. The exclusive M6 model has performance to rival many exotics from specialty sports car makers, while still having enough refinement for everyday driving.

Model Overview:
BMW's 650i comes with a 4.8L V8 engine making 360 horsepower at 6300 rpm and 363 pounds-feet of torque at 3400 rpm. The engine also features variable valve timing, variable intake lifts and a dual exhaust system. Transmissions include either the standard 6-speed sport automatic transmission with steering wheel paddles or an optional 6-speed manual transmission. Both are rear-wheel drive. The convertible model has a thick, well-insulated soft top with an electrically retractable glass window. Overall, its coefficient of drag is almost as good as the coupe's, which should result in low wind noise. It includes additional body reinforcements and an Automatic Rollover Protection System. The 650i includes many features geared toward enthusiastic driving. The Dynamic Driving Control system is standard, with which the driver can change the behavior of a number of controls, including the throttle, transmission and steering feel. Active Roll Stabilization, which aids in flat cornering, is also standard and vehicle speed-sensitive steering is also standard. An Active Steering system, which varies the steering ratio according to speed and other conditions, is optional. Big 4-wheel disc anti-lock brakes are standard, along with 18-inch run-flat tires. An optional Sport Package brings 19-inch wheels with performance tires in staggered sizes, front to back, for improved performance. There are also some innovative lighting features; xenon adaptive headlamps swivel slightly to the side to help illuminate into corners, and adaptive brake lights shine brighter during hard braking. Inside, the 6-Series is a 2+2, meaning that the back seat only has enough space for small children. For front passengers, the experience is high-tech and luxurious. All 6-Series trims include BMW's iDrive system, which combines controls for communication, audio, climate control and navigation into a menu system accessed through a controller mounted on the center console. The 6-Series trims come very well equipped as luxury cars, but especially notable standard equipment includes power seats with adjustable lumbar support, leather upholstery, a power moonroof, and a dual-zone climate control with odor filtration and humidity control. The standard sound system includes eight speakers and two subwoofers. Option packages include the Cold Weather Package (heated steering wheel and front seats), the BMW Individual Composition Package (exterior and interior touches), the Premium Sound Package (eleven speakers) and the Sport Package (19-inch wheels, run-flat rear tires, chrome exhaust pipe and other sporty options). Individual options available for all 6 Series include keyless start, heated front seats, heads-up display, Active Steering Cruise Control with distance sensors, high beam assistant, lane departure warning system, night vision system and a variety of metallic paints, woods trims and other luxurious accents. At the top of the range are the high-performance M6 models, each offering a 5.0L V10 engine and 7-speed sequential manual gearbox (SMG), with 500 horsepower at 7700 rpm and 383 pounds-feet of torque at 6100 rpm. BMW claims a 0-60 time of only 4.5 seconds, though the major magazines have clocked it even faster. The M6 is available in both coupe and convertible variants, and loaded with equipment to make it track-ready, such as a G-sensitive lubrication system, a variable differential lock, a specially designed suspension, a performance-calibrated version of the DSC stability system, an Electronic Damping Control (EDC) system that allows customizable settings and a twin-chamber exhaust system that allows two different sound characteristics.