See also:

Priority options
The driver has priority The source selected via iDrive in the front is output on the vehicle loudspeakers and can be selected but not operated from the rear. Other audio or video sources ...

Look well ahead when driving
Avoid unnecessary acceleration and braking. By maintaining a suitable distance to the vehicle driving ahead of you. Driving smoothly and looking ahead reduces fuel consumption. ...

AUX-IN port
At a glance For connecting audio devices, e.g., MP3 player. The sound is output on the vehicle loudspeakers. Recommendation: use medium tone and volume settings on the audio device. The ...