1998 Bmw M3 Convertible, Automatic, on 2040-cars

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BMW M3 and M4 CSL not in the cards

We aren't sure whether to file this one under "good news" or "bad news." BMW confirmed to Top Gear that there "are no plans" for lightweight versions of the new M3 and M4, in the same vein as the E46 M3 CSL (despite rumors to the contrary). The reason?
"There wasn't a CSL on the previous generation, and the way we look at it is like this: the CSL was great because it had this real focus on lightweight engineering. But we've already done that with these new cars. We've made them as light as possible - they come in under 1500 kilograms (3,306 pounds), which for a car like this is incredible," said Matt Collins, BMW's product manager for small to medium cars.
Now, as much as we love the idea of a hardcore version of any car, we appreciate BMW's point of view that the newest Ms are already as light and tough as they need to be. Collins elaborated, saying, "Rather than doing a halfway house to begin with and then rolling out a CSL, we thought we'd make the 'real' car as light as we possibly could. So we've no plans whatsoever to make a lighter, harder version just yet."

Researchers halfway to cutting carbon fiber costs by 90%

Carbon fiber has been utilized for decades to build racecars, as a means to cut weight while maintaining strength. But until recently, the space-age material has been largely absent from the street on anything but supercars because of the expense to use it. Recently, BMW signaled a major shift in that trend when it starting using carbon fiber reinforced plastic panels on the i3 and i8. This relatively small scale start might be just the beginning; the German company believes that a breakthrough to inexpensively manufacture the lightweight stuff is just on the horizon.
MAI Carbon Cluster Management GmbH counts BMW, Audi, Airbus, the German government and many other organizations as supporters, and it's researching how to make carbon fiber cheaper to produce, according to Automotive News Europe. The company thinks it can reduce costs by 90 percent in the near future. "We've certainly reached a halfway point on our cost-cutting target for suitable carbon-fiber parts," said project head Klaus Drechsler to Automotive News Europe.
Unfortunately, it isn't entirely clear just what MAI Carbon is doing to make such a huge leap possible. However, a recent post on the company's website talks about a new form a carbon fiber using a thermoplastic matrix that could be cured in less than three minutes. That's compared to about 90 minutes in the traditional process with an autoclave.

BMW X4 Concept is no Shanghai surprise

"One in four new BMW cars is now a BMW SAV." If you're new to BMW parlance, SAV stands for Sports Activity Vehicle, a vehicle type most of us more commonly refer to as a crossover, and that statistic, which comes straight from the automaker itself, tells you all you need to know about why the X4 Concept you see above exists.
Like its larger X6 sibling, the BMW X4 Concept tries to shove a crossover in a mold shaped vaguely like a fastback coupe. Put another way, the X4 is likely to be a polarizing design, though perhaps not to the extent that the X6 divided opinions. As for us, we definitely prefer the styling of this X4 Concept, with its strong character lines and impressive wheel-to-bodyside ratio, over that of its bigger brother. That said, we're sure the AMC Eagle comparisons will begin in earnest starting right about... now.
Dimensionally, it seems the most obvious machine with which to compare this X4 Concept is the 3 Series Wagon - we're not sure if it will be as spacious inside as the 3 Series Gran Turismo. A two-inch stretch in the wheelbase ought to bring a commensurate improvement in legroom, and a body that's nearly five inches longer should be a boon for cargo capacity. Of course, that fastback roofline will surely cut down on the car's roominess inside, but we'll have to wait for the final production model to judge its true capabilities.