Straight success.

The six-cylinder engine.

Why does a roadster have an elongated hood? To accommodate six cylinders in a row. The straight six-cylinder engine provides the perfect combination of weight and power coupled with a dynamic balance and sophisticated smoothness. Constructed from a combination of magnesium and aluminum, the BMW Z4 sDrive30i (255hp at 6,600 rpm) sets new standards in dynamic engineering. And in the BMW Z4 sDrive35i, High Precision Injection and Twin Turbo help release up to 300hp at 5,800rpm on command.