2003 - Bmw M5 on 2040-cars

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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.

2015 BMW 4 Series Gran Coupe might be a better 3 Series sedan

At BMW, there really is something for everyone these days. Just take a look at the massive 3 Series/4 Series range - you can have a sedan, coupe, convertible, wagon, or funky-backed Gran Turismo. And now, with the introduction of the 2015 4 Series Gran Coupe, you can have another seda... err, hatchback, actually. But perhaps, a better one.
Compared to the 3 Series sedan, the 4 Series Gran Coupe is both longer and wider by about half an inch, but is shorter in overall height by an inch and a half. Honestly, to our eyes, it looks a little better than the 3 Series, too, what with its longer roofline, more sculpted rear haunches and lower stance. Full interior volume specs for the 4GC aren't available as of this writing, but we expect them to be roughly the same as the 3 Series, perhaps with a small decrease in headroom and rear legroom. Trunk space, at 17 cubic feet, matches the 3 Series sedan, and because the 4GC actually uses a hatchback design, it should be easier to access.
Powertrains are completely carryover from the rest of the 3/4 Series range. The 428i uses BMW's well-liked 2.0-liter turbocharged inline-four with 240 horsepower and 255 pound-feet of torque, and the 435i is fitted with the company's 3.0-liter turbo-six, good for 300 hp and 300 lb-ft. An eight-speed automatic is the only transmission available in the US with either model and rear-wheel drive is standard. Only the 428i can be had with BMW's xDrive all-wheel-drive system, and interestingly, the 428i Gran Coupe is actually expected to be more fuel-efficient than its 3 Series sedan counterpart. The GC is estimated to return 23/35 miles per gallon city/highway, compared to the 23/33 mpg in the 328i sedan. The 435i Gran Coupe should achieve the same 22/32 mpg ratings as the 335i sedan.

BMW celebrates with M4 DTM Champion Edition

Go back just a few seasons, and Germany's DTM touring car series was a straight-up competition between Audi and Mercedes-Benz. But BMW rejoined the race in 2012, winning both the drivers' and constructors' titles on its first year back and celebrating with a special matte-black M3 DTM Champion Edition. Last season, it won the constructors' championship but not the drivers', and this year it did the opposite. In short, it's been an impressive comeback for the Bavarian automaker, and to celebrate this year's accomplishments, it's followed up with the new M4 DTM Champion Edition for Europe you see here.
Based on the new M4 coupe - which forms the basis for BMW's DTM challenger as well as its pace car - the Champion Edition is distinguished by its special livery: The orange grille frame, the matte black hood and trunk with multicolored stripes, the black stripes along its shoulder and rocker panel, and the blacked-out 19-inch wheels all to pay homage to champion Marco Wittmann's racecar, as does special lettering on the rear windows.
Other enhancements include black front splitter and skirts, carbon front flaps and mirror caps, rear spoiler and carbon diffuser, while autographed sill plates and carbon interior trim with the car's serial number adorn the cabin. Only 23 examples will be offered, symbolic of the number adorning the winning tin-top racer and the flank of this special edition as well.