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BMW 4 Series Gran Coupe blows the doors back on [w/video]

BMW sure seems to take pleasure in confusing the hell out of us. It used to be pretty simple: if you wanted a compact Bimmer, you had to look no further than the 3 Series. Then it was just a matter of which bodystyle you wanted. But the smaller end of BMW's lineup has gotten more complicated lately. Never mind the 1 Series and 2 Series (in their various iterations) that have slotted in below it - now the 3 Series has been split in two: Want a four-door, get the new 3 Series. Want a two-door, the 4 Series is your address. Right?
Almost. Because now there's a 4 Series Gran Coupe that keeps the two-door's roofline (or some approximation of it) but adds an extra set of doors in the back, thereby bridging the gap between the 3 Series sedan and 4 Series coupe. And it's just made its public debut here at the Geneva Motor Show.
The difference between this and the two-door 4 Series is plain to see: it's got two extra doors. But what's the difference between this and the 3 Series sedan? About two or three grand, to start with - depending on which version (428i Gran Coupe or 435i Gran Coupe) you choose. But it's also sleeker, more muscular and altogether that extra bit sexier. Which is a good trait, as you can see from our gallery of live shots above, to have in your European sports sedan, coupe, or whatever you want to call it.

BMW reveals M4 safety car with innovating water injection system [w/video]

Racing series don't just pick their safety cars at random, or use just whatever car is lying around. These days the car that sets the pace at the front of the pack is typically provided through consideration by a sponsor. In the MotoGP series, that's BMW and its M division, which have served up the Official Car of MotoGP since 1999. What you're looking at is the latest, and it packs some innovative technology on board. Aside from the matte black wrap with BMW's iconic striped livery, upgraded aero kit, retrofitted interior and emergency equipment, this BMW M4 coupe packs a new injection system under the hood. Only instead of injecting fuel, it injects water into the combustion chamber – something that wouldn't usually be recommended, but BMW insists actually aids in the combustion process. The idea is that the temperature of the air being mixed with the fuel inside the engine is usually hotter than ideal, so the system injects a fine mist of water into the collector in order to reduce the air's temperature... sort of like one of those hydrating misters at an amusement park or outdoor mall, but in an even hotter environment. The system brings the temperature of the air down to a more optimal temperature, helping it combust better. The process is said to yield a number of positive effects. For one, it reduces knocking. For another, it can make more out of lower-octane fuel where higher octane isn't available. It also can control the adverse effects of higher ambient temperature on the combustion process. But most of all, it increases output and reduce fuel consumption by around eight percent. Whether that eight percent is worth the added weight of the system – particularly with water pump and a 1.3-gallon tank in the trunk – is up for debate. But we'd imagine that the Bavarian engineers have weighed very carefully. Of course there's also the matter of refilling the water tank, which BMW says would be carried out whenever the safety car is refueled, but in real-world conditions would only necessitate attention once every five top-ups at the gas station. By now you might have guessed that BMW probably didn't develop this system just for the MotoGP safety car, and isn't planning on keeping it confined to the racetrack. Instead it's being tested and demonstrated on the safety car before being rolled out on production models in the future.

BMW working with Dainese to put airbags in motorcycle suits [w/video]

Addressing the safety concerns of its customers, BMW Motorrad is co-developing a rider suit with Dainese to feature something that's much more common in automobiles: airbags.
Starting with Dainese's D-air Protect System, which is made up of inflatable protectors that deploy in 15 milliseconds, the two companies will integrate the technology into a BMW Motorrad brand, one-piece racing suit, the DoubleR RaceAir. Later a different, street-oriented airbag system that can be retrofitted to bikes will be offered to Beemer riders.
The DoubleR RaceAir is expected to be presented at the EICMA motorcycle show in Milan in November, after all required crash testing has been completed.