2005 Bmw 645ci Base Coupe 2-door 4.4l 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.

2014 BMW 3 Series Gran Turismo [w/video]

BMW Gets Much Closer To The GT Look And Feel It Seeks
The 2014 BMW 3 Series Gran Turismo is being launched to a pretty cynical automotive press brigade. You know it. We know it. Heck, even BMW knows it. We've just returned from driving it on the rather unforgiving and sometimes nasty roads of Sicily, and even before we got behind the wheel, many of our media colleagues were busying themselves doubting the 3 GT's very raison d'être. So, despite the always excellent Sicilian hospitality, the day's atmosphere was kind of fragile.
While the press in attendance seemed determined to nail every product expert to the wall for having been even tangentially associated with the larger 5 Series Gran Turismo, it seemed that BMW decided ahead of time to not introduce such a sensitive discussion topic. That strategy would do little to smooth things over as everyone started digging for dirt on BMW's so far clumsy Gran Turismo franchise.

Watch the next BMW M5 slide its way around the Nurburgring

By now, you've probably seen the spy photos of the next BMW M5 – we posted three sets of camouflaged cars last year. Now comes recently captured video showing three camouflaged examples – including the car shown in our June 2015 photos – lapping Germany's famed Nurburgring. The (obvious) advantage of video when looking at prototypes like this is that we can actually see the vehicle in motion. That allows us to make a couple of educated guesses, particularly when it comes to the rumors about the next M5 moving to an all-wheel-drive setup. In the video, we can clearly see the next super-sedan throw its tail out around a bend. Judging by the way the driver takes the turn and the change in engine note, it looks and sounds like the driver was actively trying to throw the tail out. That could point to a rear-drive layout, or at the very least an AWD setup with a heavy rear-wheel bias. Beyond seeing the M5 sliding about, we also get to hear its thumping, twin-turbo heart at work. It's widely expected BMW's popular 4.4-liter, twin-turbo V8 will carry on under the hood, and this video gives us absolutely zero reason to think otherwise. It sounds a lot like the current car, down to the abrupt upshifts of the seven-speed, dual-clutch transmission. According to the video's caption, that upgraded V8 should get around a 60-horsepower bump, which would put it around 620 hp. That's 20 ponies more than the 30th Anniversary car and would contradict a June 2015 report claiming that M was capping its cars at 600 hp. Related Video: