See also:

Controls
Buttons at a glance 1 System on/off, interrupt 2 Resume speed 3 Store speed* 4 Store, maintain/change speed Switching on Press the button on the steering wheel. The marking in the speedom ...

Activating/deactivating the system manually
Using the button Using the button Press the button. ▷ LED comes on: Auto Start Stop function is deactivated. The engine is started during an automatic engine stop. The engine c ...

Performance
For 2009, there's just one engine: a 3.0-liter six-cylinder that's good for 260 horsepower. It teams with either a six-speed manual or a six-speed automatic transmission. All X3s have all-wheel dr ...