BMW has announced the introduction of its new seven-speed, semi-automatic transmission.
Using dual-clutch technology similar to that on Volkswagen's DSG gearbox, the BMW 'M double-clutch transmission' (M DCT) is the first transmission to mate dual-clutch technology with a seven-speed 'box.
Using two clutches means that the next gear is already engaged before you select it. The BMW 'box uses one clutch for the even numbers (2,4,6) and the other for odd numbers and reverse (1,3,5,7). As you...
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