See also:

Front airbags
Front airbags help protect the driver and front passenger by responding to frontal impacts in which safety belts alone cannot provide adequate restraint. ...

Rear
Rear Operation similar to front seat heating, without temperature distribution. ...

2012 BMW 3 Series Sedan: First Look
Competes with: Mercedes-Benz C-Class, Infiniti G37, Audi A4 Looks like: A little bit bigger outside, just a teensy bit bigger inside Drivetrain: 240-hp, 2.0-liter twin-turbocharged inline-four cylin ...