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BMW planning X4 M Performance diesel? [w/poll]

With the arrival of the new X4 in March, BMW will expand its crossover portfolio by one more model. But while some enthusiasts may have been disappointed by the news that the Bavarian automaker isn't likely to authorize an M version of the compact slantback crossover, this latest development could help bridge the gap.
Although the line used to be quite clear between standard BMWs and M models, Munich has been blurring it with the M Performance treatment. Those have included models like the M135i hatchback and M235i coupe, the diesel-powered M550d sedan and wagon and X5 and X6 M50d crossovers. Now word has it that BMW could follow a similar formula with the X4, creating a sub-M performance model.
What's more is that the X4 M Performance model could go diesel, following a similar formula that Audi undertook with its first performance crossover, the SQ5 TDI. The major difference here is that when Audi brought the SQ5 to these shores, it ditched the diesel for a gasoline engine. Could BMW do the same?

Alpina B4 coupe will be your subtle M4

We're big fans of Alpina here at Autoblog - the BMW tuner has created some seriously delicious products in the past, and recently tuned the diesel-powered 3 Series wagon to create the D3 Bi-Turbo. What we like most about Alpina is how the cars only look subtly more aggressive than stock, yet they pack a real wallop under the hood.
Take this B4 Coupe, recently spotted testing at the Nürburgring. It looks pretty tame compared to the normal 435i, the only visual additions being the Alpina-standard 21-spoke wheels, modified front lip and rear wing spoiler. But under the hood, Alpina is reportedly working on a tuned, twin-turbo straight-six that produces something like 410 horsepower. That means the B4 should be good for a 0-62 time of 4.2 seconds, with a top speed around 190 mph. Rear-wheel drive will be standard, though our spies suggest that Alpina could also use all-wheel drive here in the B4.
We have no doubt that the next BMW M4 will be super hot, but for those seeking a bit more stealth and exclusivity, this Alpina B4 certainly looks the business. Check it out in our gallery above.

BMW intros Concept M4 GTS ahead of Pebble Beach debut

Meet the BMW Concept M4 GTS. Coming to this weekend's Pebble Beach Concours d'Elegance, the new high-performance coupe gets both performance and aesthetic upgrades as it previews a higher-performance version of BMW's two-door darling. The headlining item is the new water-injection system. As previously reported, the setup draws from a 1.3-gallon water tank and was pioneered by the M4 Safety Car used in the MotoGP series. The new system injects water directly into the plenums of the intake manifold, where it is vaporized. The result is a lower compression temperature in the combustion chamber, which according to BMW means more horsepower and torque. You can get a broader explanation in the attached press release. Beyond the water-injection system, the M4 GTS will get OLED taillights. Their function sounds very German – "producing full-surface and homogenous illumination" – but we simply prefer the impact they've had on the look of the rear lights. It's markedly different than anything else in the BMW suite. There is a mix of aesthetic and performance upgrades to the normal M4 exterior, too. BMW has fitted manually adjustable aerodynamic aids, with a new chin splitter and a prominent rear spoiler. Both items are, unsurprisingly, made from exposed carbon fiber. BMW also turned to composites for the hood, opting for carbon-fiber-reinforced plastic. We're particularly fond of the M4 GTS' wheels. They're absolutely stunning staggered hoops, with 19-inchers in front and 20s in back. The 666M style, as BMW calls them, feature Acid Orange accents that really play well with the Frozen Dark Grey paint (although they clash quite badly with the yellow calipers on the carbon-ceramic brakes). Stay tuned for more on the new Concept M4 GTS, including live images from its debut in sunny California. Until then, scroll down for the official press release from BMW. Related Video: BMW Concept M4 GTS to be Premiered During Monterey Car Week. The First M3/ M4 Special Production Car to be Sold in the US. Woodcliff Lake, N.J. – EMBARGO: August 13, 2015 – 9:00pm EDT/6:00pm PDT...A year on from the launch of the BMW M4 Coupe, BMW M GmbH is presenting an initial preview of a high-performance model for use on the road and on the race track: the BMW Concept M4 GTS – the first M3/M4 special production vehicle to be sold in the US. The BMW M GmbH was founded in 1972 as BMW Motorsport GmbH and caused a sensation with its iconic BMW M1 racing car.