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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 4 Series Convertible basks in the sun

The BMW 4 Series Convertible will show its non-camouflaged face sometime later this year, but our spies recently caught this nearly naked prototype out getting some sun. As you'll recall, the droptop 4 Series replaces the 3 Series Convertible in the BMW range, and if our recent stint behind the wheel of the new 435i Coupe is anything to go on, this topless 4er should be quite a fun runabout for sun-drenched motoring.
To no one's surprise, the 4 Series Convertible shares all of its design with the 4 Series coupe, save, of course, the obvious roofectomy. Beyond that, the topless 2+2 will use the same engines and transmissions as the coupe, meaning it should arrive in the US in both 428i and 435i guises, powered by a 2.0-liter turbocharged inline-four and 3.0-liter turbocharged inline-six, respectively. Both six-speed manual and eight-speed automatic transmissions will be available.
The car spied this time around has the full M Sport visual treatment, with the revised (and better-looking) front fascia, larger 19-inch wheels, and attractive Melbourne Red paint. Interestingly, it appears this prototype has the standard xenon headlamp setup, rather than the full-LED option that's also available.

BMW builds its 2 millionth 1 Series on eve of new model's launch

Hard as it may be to believe, it's been over ten years since BMW launched the first 1 Series, taking the Bavarian automaker into more accessible territory for the first time. Later this month, the first examples of the new model will arrive at dealers, but before it does, the littlest BMW has another reason to celebrate as the 2 millionth unit has rolled off the line. The landmark example is a 120i five-door equipped with the M Sport package and painted in Estoril Blue, bound for a customer in Japan. The achievement is even more noteworthy when you consider that what started out as the 1 Series has since been split into two lines. The three- and five-door hatchbacks remain part of the 1 Series, while the coupe and convertible we get in the US that were once part of the 1 Series as well have since been spun off as the separate 2 Series. Production of the three-door takes place exclusively at BMW's plant in Regensburg, while the five-door is split between Regensburg and a second plant in Leipzig. Buyers are further able to specify between diesel and gasoline engines ranging from three cylinders all the way up to six. Show full PR text Two reasons to celebrate: BMW 1 Series production hits the two-million mark – New edition writes a fresh chapter in the compact model's success story. Munich. 28 March 2015 sees the curtain raised on the market launch of the new BMW 1 Series. Fans of compact driving pleasure can look forward to an even more striking design, a further refined premium ambiance for the interior, engines that are extremely powerful and even more efficient, and innovative equipment features. Ahead of the launch, news filtered through from BMW Plant Regensburg of another reason to smile as the two-millionth BMW 1 Series rolled off the production line. The landmark car was built just a few days after the start of production for the new version of the compact model and is one of the first examples of the new BMW 1 Series range earmarked for export to Asia. The BMW 120i 5-door, painted in Estoril Blue metallic and equipped with an M Sport package, will be delivered to a customer in Japan. This production landmark at BMW Plant Regensburg represents another milestone in the international success story of the BMW 1 Series. In late summer 2014 the company celebrated the model series' tenth birthday.