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M-fographic breaks down the history of BMW performance machinery

Few characters carry the kind of clout among performance enthusiasts as the letter M. For 35 years now, that one letter has adorned over 300,000 BMWs, each tuned to deliver a higher degree of performance than the stock models on which they're based.
The M division has worked up nearly 100 different models over the past third of a century, which can leave even the most expert among Bimmer fanatics bewildered. Fortunately British auto loan service Carfinance247 has commissioned this handy infographic to make sense of it all, and you can check it out below to see what the letter M really stands for.

BMW almost ready to roll out new 2 Series cabriolet

The 2 Series is a relatively new member of the BMW family, having been spun off of the 1 Series (itself one of the company's youngest lines) just last year. So far the range has been split between the Active Tourer and the 2 Series Coupe, but soon the latter will breed a new compact convertible to take the place of the outgoing 1 Series cabriolet, and here we have our best look at it yet.
Spied with the most minimal camouflage and its top down while undergoing its final rounds of development testing, this pre-production 2 Series cabrio looks about ready for show time. While the Active Tourer is based on a different front-drive platform, this convertible is, as you might have guessed, essentially a 2 Series Coupe with a folding fabric roof. That means rear-wheel drive (or potentially all-wheel drive if BMW extends its availability from the coupe to the convertible) win either 228i or M235i specification - both of them turbocharged, the former with a 240-horsepower, 2.0-liter four and the latter with the 320-hp, 3.0-liter inline-six.
Considering that BMW got an approximately $8k premium for the 1 Series convertible over the coupe, expect the 2 Series cabrio to start at a little over $40k for the 228i and top out at around $53k for the M235i xDrive convertible. That is, assuming BMW offers it in that top spec, because at that rate we're getting perilously close to the $54,900 base price of the 435i convertible.

Alpina D3 Bi-Turbo torquing its way toward Frankfurt

Few tuners benefit from the kind of factory support that Alpina does, giving the pseudo-aftermarket firm nearly as much official status as BMW's own M division. And this is its latest product.
Set to debut, as expected, at the Frankfurt Motor Show this week is the new Alpina D3 Bi-Turbo, which you can consider, for all intents and purposes, the diesel M3 that BMW never built. While the outgoing D3 (which was Alpina's best-selling model) used a four-cylinder engine, Autocar reports that the new model packs a 3.0-liter, twin-turbo inline-six diesel to drive a respectable 345 horsepower but a mammoth 516 pound-feet of torque to either the rear wheels or all four through the optional availability of xDrive. (European buyers will also be able to choose between sedan and wagon bodystyles.)
The engine is the same as you'd find in the XD3 and D5 (Alpina's diesel performance versions of the X3 and 5 Series, respectively), but in the lighter 3 Series form can propel the D3 Bi-Turbo up to 62 miles per hour in 4.6 seconds and on to an Autobahn-crunching top speed of 173 mph. And as per Alpina tradition, visual cues are minimal, with a subtly optimized aero kit and 19- or available 20-inch alloy wheels. Unfortunately, the 7 Series-based B7 is the only Alpina we get on this side of the Atlantic, but an oil-drenched performance enthusiast can dream.