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2015 BMW M4 Convertible will give the best bad hair days

BMW officially unveiled the 2015 M4 Convertible at the Javits Center in New York this morning. The droptop, which will slot in next to the M4 Coupe in BMW's performance line, offers infinitely more headroom, fresh air and sunshine for those that want a little more great outdoors and tousled hair with their M experience.
Visually, the M4 convertible is similar to the coupe, and carries on the hardtop's athletic stance with a long wheelbase, short front overhang, aerodynamic mirrors and in the case of this showcar, optional yellow-painted brake calipers. The car's expressive, angry face is perhaps the most notable aspect of its styling, screaming "get the hell out of my way!" with its signature twin-bar kidney grille, trio of air intakes and squinty LED headlights. Inside, the convertible employs three-temperature neck warmers (for chilly top-down days), an absurd amount of "M" logos and a wealth of luxury and technology features.
The rear-wheel-drive convertible uses the same engine as the coupe: a high-revving, twin-turbocharged 3.0-liter inline six producing 425 horsepower and 406 pound-feet of torque, mated to either a six-speed manual or a seven-speed M dual-clutch transmission. BMW says the car can make a 0-60 sprint in just 4.4 seconds when equipped with the manual.

BMW looking to fix i3 acceleration problem uncovered by Consumer Reports

The BMW i3 has been hailed in some quarters as the future of electric mobility, what with its innovative carbon-fiber-reinforced plastic body and commitment to sustainable materials wherever possible. The modernist little hatch is even available with a 650cc two-cylinder gas engine with 34 horsepower to act as a range-extender for those who want it. However, that optional engine might have a drawback - at least for the moment.
Consumer Reports brought the problem to light when one of its drivers was behind the wheel of an i3 using the range-extender. When the driver attempted to pass another vehicle on a rolling, two-lane road, the BMW suddenly had no power to accelerate - a scary situation. CR started examining the car and found something pretty shocking: After driving at a constant speed for a while without any regenerative braking in range-extended mode, acceleration to 60 miles per hour plummeted from about 9 seconds normally to a staggering 27 to 40 seconds in their testing.
A BMW spokesperson told CR that it knows about the problem and has a fix coming next spring that also works on current models. The upgrade includes a state of charge indicator, a warning about loss of power and uses the car's navigation to boost the battery before driving on rolling terrain. It is not clear if the severe power deficiency will also eventually result in a recall.

BMW M3 and M4 will rock 430 hp from twin-turbo six with standard manual [w/video]

We're not sure which spec we're most intrigued by for the new BMW M3 and M4: the twin-turbo six-cylinder with 430 horsepower and "far beyond" 369 pound-feet of torque, the 3,300-pound curb weight or the standard six-speed manual transmission with automatic throttle blipping on downshifts. That engine is fitted with both Valvetronic and Double-Vanos, twin-wire arc-spray coating in the cylinders instead of liners to save weight, a track-ready cooling system with additional radiators, a forged crankshaft, dry-sump lubrication and a magnesium oil sump. BMW says its "high revving concept" has a redline beyond 7,500 rpm.
In the M4, it will be pulling a coupe with "a weight of just under 1,500 kilograms," which is 3,300 pounds to you and me. That number is said to include no driver and 90 percent fuel, but we're still waiting on the exact number and specs. BMW says it's "around 80 kilograms lighter than a comparably equipped predecessor model," putting the power-to-weight ratio at something like 7.68 pounds per horsepower at the same time as it helps reduce fuel consumption by 25 percent. The use of carbon fiber reinforced plastics (CFRP) for the roof, drive shaft (with no center bearing), trunk and front strut brace, and forged aluminum for suspension components, have aided in the weight loss. This time around, the sedan - the M3 - will also get a CFRP roof.
The default option will be a six-speed manual.