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First Ride: 2015 BMW M3 and M4

Getting Our Butts In The Seats
Both the non-M BMW 3 Series sedan and 4 Series coupe have so far brought much pleasure to us at Autoblog. The terrific four-cylinder 328i trim has become our favorite of the 3 Series line, while we have yet to get a chance at the 428i coupe. That said, the 35i trim powered by a 3.0-liter TwinPower Turbo inline six-cylinder engine is not exactly to be sniffed at.
We all know the ones you're really waiting for, though. The F80 fifth-generation M3 sedan and the supremely sexy F82 M4 coupe. Rumors have been buzzing for a couple of years now that the engine would be another V8, only turbocharged this time, or else a tri-turbo six. Well, today BMW confirmed that the mill under the hood's power bulge is a 3.0-liter inline six-cylinder TwinPower Turbo of the biturbo variety, referred to internally as "S55B30 variant."

Alpina B3 Bi-Turbo burns all the midnight oil

We've got good news and bad news for you, boys and girls, from the floor of the Frankfurt Motor Show. The good news is that the BMW M3 has come early, with a diesel, in wagon form - albeit with a different name. The bad news is that it will in all likelihood never make it to America. Which is a shame, because it's awesome.
What we're talking about, of course, is the new Alpina D3 Bi-Turbo. BMW's wickedly talented but lesser know stepchild has created a 3 Series with a 3.0-liter twin-turbo diesel six packing 345 horsepower and 516 pound-feet of torque. You - and by "you," we mean overseas buyers - can choose between sedan or wagon, as well as rear- or all-wheel drive. But the bottom line is a 4.6-second 0-62 time and a 173-mph top speed... from a diesel.
We scoped out the rear-drive wagon Alpina brought to the show, decked out in its signature blue. And you can, too, in the gallery of live shots above, along with the freshly assembled stock photos of both sedan and wagon versions in the gallery below.

BMW 328d confirmed for New York debut

Late last year, some of BMW's future diesel plans for the US market were leaked, and we learned that a diesel-powered version of the 3 Series sedan (pictured above in 335i guise) would be coming in the first quarter of 2013. That report appears to be holding true, as BMW has just confirmed the debut of the oil-burning 328d sedan as part of the company's New York Auto Show plans.
The 328d will be powered by a turbocharged four-cylinder diesel engine good for 180 horsepower and 280 pound-feet of torque. The rear-wheel-drive sedan will hit 60 miles per hour in 7.2 seconds and fuel economy numbers could "well exceed" 40 miles per gallon. (Official EPA numbers will be released closer to the car's launch.)
Elsewhere on BMW's New York stand, the company will show off the 3 Series Gran Turismo that debuted at the Geneva Motor Show earlier this month, as well as the Concept Active Tourer that we first saw in Paris last fall. Scroll down for the official press blast.