The invention relates to a motor vehicle seat (2) with a padded seat part (4) the seat surface (18) of which is configured by the upper sides of an intermediate element (20) and two lateral elements (22) that slightly protrude upwards relative to the intermediate element (20). The motor vehicle seat further comprises a padded backrest (6) the contact zone (24) of which is configured by the front sides of an intermediate element (26) and two lateral elements (28) that slightly protrude forward relative to the intermediate element. In the zones of padding of the motor vehicle seat cavities are provided that communicate with an activatable filling device. The aim of the invention is to better restrain a passenger sitting on the seat (2) in the event of a side collision and to better protect him/her from injuries caused by intruding articles. To this end, at least one of the lateral elements (22, 28) of the seat part (4) and/or the backrest (6) can be inflated in order to enlarge the part that protrudes over the respective intermediate element (20, 26).
