See also:

Lumbar support
The curvature of the seat backrest can be adjusted in such a way that it supports the lumbar region of the spine. The lower back and the spine are supported for upright posture. ▷ Press ...

BMW 320d EfficientDynamics Edition: state-of-the-art diesel engine makes the new sports sedan the most efficient vehicle in its class
Drivers who don't want to miss out on either dynamic, sporty performance or first-class fuel economy will find the new BMW 320d EfficientDynamics Edition an extremely attractive proposition. As in ...

iDrive in the rear
Operation is the same as for the iDrive in the front. To adjust the volume: turn, arrows 1. To activate the controller and switch between the screens: press the buttons, arrows 2. ...