Side Airbags
WARNING: This page does not describe the selected car, but rather 121 other vehicles, including the 2011 BMW M3, 2011 BMW 323i, 2010 BMW Z4, 2010 BMW X6 M, and 2010 BMW X6. However, it is still accessible from the selected car via links, so may be relevant.
Since the introduction of MRS, side airbags have been standard equipment. Rear airbags on some vehicles are part of an option package.
Side airbags are designed to prevent injury to the thorax (chest) region of the occupants.
Side Airbag with Inert Gas Inflation (Rear view)