B means Brake mode that some models, which includes electric cars, give. You can utilize it to decelerate or preserve downhill speed without the need of utilizing the vehicle’s brakes. The Audi E-tron GT and Porsche Taycan use a two-speed unit on their own rear motor, having a small first https://jaidenaayxy.topbloghub.com/40131249/the-ultimate-guide-to-gearbox-auto