See also:

Brake assistant
When you apply the brakes rapidly, this system automatically produces the maximum braking force boost. It thus helps to achieve the shortest possible braking distance during full braking. This ...

System limits
Speed range Best results are achieved when using the system on well-developed roads and highways. The desired speed can be selected between 20 mph/30 km/h to 110 mph/180 km/h. The system can a ...

Interior
Even though it's relatively unchanged for 2009, the X3's interior remains very upscale for this segment. My test car's dark brown leather upholstery and black dashboard made for an especially clas ...