2014 BMW M6 Gran Coupe at the 2013 Detroit Auto Show

  • Competes with: Mercedes-Benz CLS63 AMG and E63 AMG, Audi RS7
  • Looks like: BMW's baddest four-door gets the M treatment
  • Drivetrain: 560-hp, twin-turbocharged 4.4-liter V-8 engine with seven-speed dual-clutch automatic transmission
  • Hits dealerships: Early summer

BMW's sleek, four-door Gran Sport coupe receives a dose of high performance from BMW's M division for 2014. Like the BMW M5 and M5 coupe/convertible, the M6 is powered by an ultra-potent 560-horsepower, twin-turbocharged 4.4-liter V-8 and seven-speed dual-clutch automatic transmission. There's no manual option like the M5. The engine marks an increase of 115 hp over the non-M BMW 650i Gran Coupe and its less powerful twin-turbocharged 4.4-liter V-8.

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The extra potency results in an expected zero to 60 mph time of 4.1 seconds. The M6 Gran Coupe channels the engine's power through a dual-clutch automatic transmission with paddle shifters and multiple driving modes. A launch control feature is available when the M6 Gran Coupe transmission is in its sportiest setting to allow quick starts from a standstill.

Bringing the M6 Gran Coupe down from high speeds are standard 15.7-inch front brake rotors and 15.6-inch rear rotors with six-piston metallic blue calipers and the M logo. Carbon-ceramic brakes that are lighter and more resistance to fading at braking limits are optional and include larger front brake rotors. Attention also goes to the M6 Gran Coupe's chassis with increased rigidity to maximize handling precision.

The standard suspension is electronically adjustable with multiple modes of firmness and sport settings ranging from comfort to noticeably stiffer settings to achieve maximum driving dynamics, says BMW. Like the M6 and M5, the M6 Gran Coupe uses steering-wheel-mounted M Drive buttons to conveniently select multiple drive mode configurations.

The Gran Coupe's exterior, with its fastback roofline, receives typical M add-ons like larger, more aggressive front air inlets, quad-tip dual exhaust and an unpainted carbon fiber roof panel with exposed carbon fiber structure. The roof's inside is covered with Alacantara simulated suede; other M enhancements include door sills with M6 lettering, carbon fiber trim, M lightweight sport seats with M logos and an M6-specific instrument cluster with red needles.

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