The larger displacement of the eight-cylinder powerplants increases power output to 270 kW (367 bhp) in the BMW 750i. Even at high engine speeds, the V8s remain vibration-free, thanks to their precise mass distribution. Valvetronic, the fully-variable valve control system, ensures the engines breathe freely. The result is breathtaking performance: the BMW 750i, for example, needs just 5.9 second from zero to 100 km/h.