Absolutely everything you\’ve ever wanted to know about BMW\’s new SMG transmission in the M3. The SMG is essentially a clutchless manual transmission which uses hydraulics and electronics to operate the clutch and change gears faster than any human can. The driver selects gears using paddles mounted behind the steering wheel. It has 6 different manual modes (which control how aggressively it shifts) and 5 automatic modes. It sounds like a lot of fun, although one of these days I really should learn to drive a manual. Nevertheless, my next car\’s definitely gonna be a M3 SMG.