2015 BMW M4 Coupe

PREVIEW

Maybe you've heard about BMW's new naming strategy. If not, here's the short version: Sedans get odd numbers while coupes and convertibles get evens. So when the new M3 debuts in January with four doors, coupe enthusiasts needn't worry: The two-door 2015 BMW M4 bows at the same time. A convertible is also due.

The V8 is gone. Instead, the M4 will get BMW's classic 3.0-liter inline six-cylinder, this one a twin-turbocharged mill generating 426 horsepower and 406 pound-feet of torque. The introduction of turbocharging marks a significant departure for a nameplate with a long tradition of high-revving, naturally aspirated engines. The new engine will still rev high -- up to 7,600 rpm, BMW says -- although peak power arrives around 5,000 rpm and peak torque around 2,000 rpm. The new turbo-6 is also 22 pounds lighter than the V8 it replaces.

Two transmissions are available: a new six-speed manual fortified with a twin-plate clutch, stronger gears and rev-matching, or a seven-speed dual-clutch automated manual. BMW says the new powertrain, along with the M4's curb weight of around 3,300 pounds, will deliver zero to 62 mph in 4.1 seconds. The M4 even offers a "Smokey Burnout" function -- we're serious -- that BMW says "allows the driver to indulge in a degree of rear wheelspin while the car is moving at low speeds."

With unique front and rear aluminum suspension components, 19-inch forged alloy wheels, staggered wheel widths and optional six-piston carbon-ceramic brakes, the M4 sits nearly 2 inches wider than the 435i coupe. The wider track means unique body panels all around, including a hood and front quarter panels made of aluminum, and a carbon-fiber roof. Only the door panels are shared with the 4 Series.

The 2015 BMW M4 also gets electric-assist steering similar to that fitted on the new 4 Series (although with high-performance tuning). It's one of the many components that M Division engineers use to meet ever-tightening European and U.S. fuel economy standards. Comfort, Sport and Sport+ modes allow drivers to dial up increasing amounts of steering effort. The electric-assist steering that started in the new 3 Series has drawn complaints from the BMW faithful, though we suspect only the most astute M3/M4 buyer will perceive a real dynamic difference. An optional Adaptive M suspension offers the same three modes for relaxed driving or more aggressive street and track settings.

The M4 will also offer a host of contemporary safety and driver assistance systems, including pedestrian collision warning, adaptive cruise control and adaptive high beams designed to avoid blinding oncoming drivers.

The M4 will debut in January 2014 and should go on sale in Europe by summer, with U.S. sales to follow shortly after. Check back for a full review of the M4, including specs, driving impressions and buying advice as it becomes available.