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BMW M4 sheds some camouflage for latest test run

Last time we saw the upcoming BMW M4 out testing, it was heavily clad with camouflage and decidedly homely looking (as most early development mules are). But in this latest set of photos, the M3 coupe successor has started to come into its own skin, and we're seeing a shape more closely akin to that of a rendering we brought you a few months back.
Unsurprisingly, the M4 coupe looks very similar to the 4 Series Concept that BMW debuted at the Detroit Auto Show earlier this year. And while non-M version of the 4er will likely look a bit more sedate, these spy shots clearly show an aggressive front fascia, large wheels and the usual quad-exhaust rounding out the rear end.
Naturally, the M3 sedan will launch before this M4 coupe (and convertible), and powertrain details are still unclear as of this writing. We understand that the current M3's naturally aspirated V8 will be axed in favor of some sort of turbocharged six-cylinder engine, and we've heard plenty of rumors as to what, exactly, it might be, but we have yet to hear any official confirmation.

BMW Concept 4 Series Coupe proves that 3-2=4

BMW may be calling this 4 Series Coupe a concept, but take a long, hard look - this will be the car that replaces the 3 Series Coupe in the automaker's lineup. Don't let that number change trip you up. This car will have all the basic elements of what makes a 3 Series coupe so popular, and while this isn't technically the production model (there are still come conceptual elements and we don't have powertrain details), it's pretty much what we can look forward to seeing out on the road very soon. And honestly, the naming strategy isn't that weird (though it's still plenty odd) - BMW will be using even numbers for all its coupes and convertibles moving forward. 1 Series, meet 2 Series. And when a 3 Series loses two doors, it becomes a 4 Series.
Dimensionally, the new 4 Series coupe is 1.7-inches wider, half an inch shorter in overall height, and rides on a 2.0-inch longer wheelbase. It's a really pretty thing, with bold, aggressive body sculpting up front, and a rear deck that's sort of like a downsized version of the larger 6 Series two-door. It's all very handsome, but we'll reserve final judgment until we see the production version with its likely smaller wheels and possibly toned-down visuals.
We don't yet have powertrain details, but we fully expect the 2.0-liter turbocharged four-cylinder and 3.0-liter turbo-six to carry over in 328i 428i and 435i guise. Though remember, other 3.0-liter models in BMW's range use 40i designation, so we could possibly be looking at a 440i Coupe, instead. We won't know until the production car officially bows later this year.

Alpina introduces new B5 Biturbo with 600 horsepower

If the BMW M5 is not enough for you, Alpina created the new B5 Biturbo. Where the factory M5 packs 560 horsepower, the B5 has 600. But even more impressive is the B5 Biturbo bests the M5's 500 pound-feet of torque with 590 of its own. That beats the 15-hp boost from the M5's Competition Package and matches the power of the limited 30 Yahre edition - but with more torque. All that muscle and twist is produced by Alpina's own version of BMW's 4.4-liter twin-turbo V8, mated to an eight-speed automatic transmission instead of a seven-speed dual-clutch gearbox. The result is a 0-62 time quoted at 4.2 seconds, besting the M5 by a tenth. The top speed is also unlocked from 155 miles per hour to 204 – which may be entirely hypothetical for most of us, but could make all the difference for those who regularly commute along the Autobahn. Of course Alpina didn't tinker with the engine and leave it at that. It also customized the suspension, rolling stock, aero kit, and interior, and fitted a mechanical limited-slip differential built by Drexler Motor Sport. But perhaps the best part of all is that the Alpina B5 is also available as a wagon. That makes this modified Bimmer one of the best have-your-cake/eat-it-too propositions we could ever ask for. Featured Gallery 2016 BMW Alpina B5 Biturbo News Source: Alpina Aftermarket BMW Wagon Luxury Performance Sedan alpina alpina b5 biturbo