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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 M4 Concept leaked ahead of Monterey debut

Last month, we heard that BMW might be bringing a concept previewing its next M4 sports coupe to this year's Monterey festivities. Well, thanks to the folks at USA Today, we have absolute confirmation of this by way of some leaked images. And goodness, she's certainly a looker.
While a few of us still find some of the 4 Series' design to be a bit awkward, it's hard to not immediately warm up to the aggressive bits of this hotter M4 concept. It certainly looks the business of a proper sports car, and a worthy successor to the M3 coupe. Of course, a lot of this will likely be toned down for the production version, which we'll likely be seeing at the 2014 Detroit Auto Show in January, along with its four-door M3 kin.
The official M4 Concept details will be revealed later tonight, but for now, have a look at a few shots of the golden show car in our gallery of leaked shots, above.

BMW M135i vs. Mercedes A45 AMG in Euro small-lux throwdown

BMW and Mercedes-Benz - please, please, please bring the M135i and A45 AMG hatchbacks to North America. For as long as we can remember, buyers in the New World have been forced to look longingly at Europe and Great Britain and the excellent super hatches that are so routinely offered there. And while we're quite content with the Ford Focus ST and Volkswagen GTI, having a 360-horse five-door with a premium, content-rich interior sounds quite nice.
Our envy for Europe has grown after watching the latest video from Drive, which stars Chris Harris, the Mercedes-Benz A45 AMG and the BMW M135i. This latest battle between MB and BMW takes place on both road and track, with Harris providing a running commentary. If you're interested in the upcoming Mercedes CLA45 AMG, you should pay special attention to the section on the A45, as the two are essentially fraternal twins. While the video is a bit on the long side, it provides a comprehensive rundown of both cars, giving those of us in North America just a small taste of what we're missing. Check it out by scrolling below.