This luxurious grand tourer is a four-door, stylish hatchback. Power comes from a 3.0-liter, turbocharged six-cylinder or a 4.4-liter V8 turbo engine, mated to either an eight-speed automatic transmission or a seven-speed automatic in the high-performance version. The V8 delivers ferocious acceleration and an invigorating exhaust note. Handling is sharp, and the ride is compliant and controlled. The cabin is quiet. Controls take some getting used to but ultimately prove to be logical, except for the confusing gear selector for the dual-clutch automatic on M versions. The M6 is a more performance-oriented, track-ready version. This is the last year for the 6.