Our engines wouldn't be more powerful if they weren't also more fuel-efficient.
The motivation behind our patented Valvetronic technology was simple: to enable the engine to breathe more easily. Our engineers believed that this would allow for increased power output and optimized fuel-efficiency, and they were right. Both goals were accomplished by varying the lift height of the valves to regulate intake instead of using a traditional throttle. This means that at lower engine loads, the valves open a smaller amount, whereas at full power they open completely. This revolutionary technology has helped make it possible for BMW to improve its fleet average fuel economy more than any other manufacturer, while at the same time improving performance substantially.