2006 Bmw 650i Base Convertible 2-door 4.8l on 2040-cars

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BMW i8 and M1 reunited in mid-engined Bavarian retrospective

The BMW i8 may be the cutting edge today – it did, after all, just win our Technology of the Year award – but as rare an event as it is, it's not the first time that BMW has put out an extreme mid-engined supercar. The last time was in the late 1970s with the M1, a Giugiaro-designed, (partially) Lamborghini-developed piece of exotic machinery. The better part of four decades later, Auto Express has brought together an original M1 with its spiritual (if much more advanced) successor for the video comparison that was bound to happen. The question we can't help but ponder, initial sales success aside, is whether the i8 will mature into a classic in the same way the M1 has.

2014 BMW 4 Series Convertible is easy, breezy, beautiful

BMW debuted its 2014 4 Series Convertible today at the LA Auto Show, and the sporting two-door will feature a folding hardtop - like the convertible 3 Series before it - and be offered in 428i and 435i guises.
The 428i Convertible is equipped with BMW's 2.0-liter turbocharged inline four-cylinder engine, which pumps out 240 horsepower and 255 pound-feet of torque - good for sprinting from 0-60 miles per hour in 6.2 seconds. The 435i Convertible gets the 3.0-liter turbocharged inline six-cylinder engine, which steps up output to 300 hp and 300 lb-ft of torque. The topless 435i drops the 0-60-mph time to 5.5 seconds. Both cars come standard with an eight-speed automatic transmission, and BMW says that a manual transmission will not be offered on 4 Series Convertibles in the US market.
The 4 Series Convertible will be offered in Sport Line, Luxury Line and M Sport trims. Pricing starts at $48,750 for the 428i Convertible and $54,900 for the 435i. Head on below to peruse the (long) press release for details.

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.