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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.

BMW's DTM champ swaps rides with Mini's Dakar winner

BMW may not race in F1 any longer, and it doesn't compete with Audi and Porsche in the LMP1 class at Le Mans. It even shut down Mini's short-lived effort on the World Rally Championship. But that doesn't mean it doesn't race at all. In fact it's the current reigning champion both in DTM and at Dakar. So to highlight its varied motorsport programs, the German automaker had two of its top drivers swap rides. German driver Martin Tomczyk, who won the DTM title in 2011 and now drives for BMW, took to Nasser Al-Attiyah's Mini All4Racing Countryman on the sand dunes of Dubai. Meanwhile the Qatari driver, who has won the Dakar Rally two times now, took to the wheel of Tomczyk's BMW M4 DTM around Oschersleben in Germany. They even repeated the game of musical chairs at Hockenheim over the weekend. If anything, the promo clip shot by Red Bull just goes to show how different the varied racing machinery can be, and the challenges posed to racing drivers switching between disciplines. But lessons aside, it's a cool clip, so check it out above. Two champions swap cockpits: Martin Tomczyk drives the MINI ALL4 Racing, Nasser Al-Attiyah the BMW M4 DTM. Munich (DE), 1st May 2015. From asphalt to sand and back again: BMW DTM driver Martin Tomczyk (DE) and MINI ALL4 Racing ace Nasser Al-Attiyah (QA) both entered unfamiliar territory and took each other's cars for a test drive. As part of a video shoot for BMW Motorsport Premium Partner Red Bull in Dubai (AE), Tomczyk, a proven master of his trade on asphalt as the 2011 DTM Champion, took the wheel of the MINI ALL4 Racing, with which X-raid has won the famous Rally Dakar the last four years. During DTM testing in Oschersleben (DE), Al-Attiyah was given the opportunity to drive Tomczyk's BMW M Performance Parts M4 DTM. Two wins at the Rally Dakar are just some of the successes the rally driver from Qatar has had to date. He followed up his first victory in 2011 by winning in the MINI ALL4 Racing in January 2015. "Driving the MINI ALL4 Racing through the sand and over the dunes in Dubai was a fascinating experience and was so much fun," said Tomczyk. "The car has an incredible amount of torwue – and the test in the dunes was an amazing adrenalin rush even for an experienced race driver such as myself. It's totally different to driving on a circuit.

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.