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2015 BMW X6 stays the course with more power, RWD model

What would this world be without the BMW X6? Oh, sure, the whole coupe-crossover design trend surely would have started somewhere, but BMW was the first, launching its odd duck back in 2008. Much as we like to harp on the X6 (for being less functional and more expensive than the X5 on which it's based), people around the world sure do seem to like the thing, BMW having sold some 250,000 examples since the CUV's birth. And as you first saw thanks to leaked images this morning, the second-generation X6 has just arrived.
The shape is familiar, as are specific styling elements like the larger headlamps (now available with a full-LED treatment) and taillamps, mimicking those found on the X5. Two trims are available - xLine and M Sport - the former taking a more subdued approach, while the latter uses the traditionally bulgy and aggressive M-badged kit, with larger air intakes and matte aluminum grille bars. All X6s come standard with 19-inch wheels, and 20s are optional.
Regardless of trim, BMW will now offer the X6 in three guises here in the United States: sDrive35i, xDrive35i and xDrive50i. Dissecting the nomenclature, that means the first two models will be powered by BMW's 3.0-liter turbocharged inline-six, good for 300 horsepower and 300 pound-feet of torque. The sDrive X6 uses rear-wheel drive, while the xDrive, of course, uses all-wheel drive. Moving up, the xDrive50i uses the same twin-turbo 4.4-liter V8 as its predecessor, though power has been increased to 450 hp and 480 lb-ft. All X6 models are fitted with an eight-speed automatic transmission, and BMW says that the new powertrains are more efficient than before, though official fuel economy numbers have not yet been released.

Is the skill of rev matching being lost to computers?

If the ability to drive a vehicle equipped with a manual gearbox is becoming a lost art, then the skill of being able to match revs on downshifts is the stuff they would teach at the automotive equivalent of the Shaolin Temple. The usefulness of rev matching in street driving is limited most of the time – aside from sounding cool and impressing your friends. But out on a race track or the occasional fast, windy road, its benefits are abundantly clear. While in motion, the engine speed and wheel speed of a vehicle with a manual transmission are kept in sync when the clutch is engaged (i.e. when the clutch pedal is not being pressed down). However, when changing gear, that mechanical link is severed briefly, and the synchronization between the motor and wheels is broken. When upshifting during acceleration, this isn't much of an issue, as there's typically not a huge disparity between engine speed and wheel speed as a car accelerates. Rev-matching downshifts is the stuff they would teach at the automotive equivalent of the Shaolin Temple. But when slowing down and downshifting – as you might do when approaching a corner at a high rate of speed – that gap of time caused by the disengagement of the clutch from the engine causes the revs to drop. Without bringing up the revs somehow to help the engine speed match the wheel speed in the gear you're about to use, you'll typically get a sudden jolt when re-engaging the clutch as physics brings everything back into sync. That jolt can be a big problem when you're moving along swiftly, causing instability or even a loss of traction, particularly in rear-wheel-drive cars. So the point of rev matching is to blip the throttle simultaneously as you downshift gears in order to bring the engine speed to a closer match with the wheel speed before you re-engage the clutch in that lower gear, in turn providing a much smoother downshift. When braking is thrown in, you get heel-toe downshifting, which involves some dexterity to use all three pedals at the same time with just two feet – clutch in, slow the car while revving, clutch out. However, even if you're aware of heel-toe technique and the basic elements of how to perform a rev match, perfecting it to the point of making it useful can be difficult.

BMW-Toyota joint sports car project is on like Donkey Kong

It's official - there will be a jointly developed sports car from BMW and Toyota. While the two auto giants signed a Memorandum of Understanding that pledged to pursue "joint development of architecture and components for a future sports vehicle" back in June of 2012, in the interim, it has remained unclear how those plans had been progressing. BMW has finally officially confirmed that the German and Japanese manufacturers will be codeveloping a pair of sports cars in addition to pursuing other disciplines including fuel cell systems and lightweight technologies.
"We have agreed on a joint architecture for a sports car. What is important is that there will be two different vehicles that are authentic to the two brands," BMW Development Chief Herbert Diess told Germany's Frankfurter Allgemeine Zeitung, Reuters is reporting. This is a very, very big step for both brands, but now the speculation can officially begin as to what the products of this agreement will look like.
There's ample reason to believe that the BMW-Toyota tie up will result in a Supra successor based on comments made by the chief engineer of the GT86/FR-S program, Tatsuya Tada, back in August. Follow that with a rumor from earlier this month that Toyota could debut a Supra concept car at the upcoming Detroit Auto Show later this month, and we could be seeing the fruits of this partnership sooner rather than later.