Motor vehicle seat

Motor vehicle seat having a seat backrest, comprising a pivoting support device for accommodating forward pivotal movement of the seat with respect to a support base about a rear axis running in transverse direction of a vehicle, and a front deformation element arranged at a distance from the rear axis, and supporting the seat on the support base, the deformation element being configured to only permit forward pivoting of the seat when a given load is exerted as the result of an accident, wherein the deformation element is designed as an energy-absorbing foamed material block at least partially surrounded by a shell having a forward facing end and a rearward facing end, wherein a seat facing surface and a support base facing surface of the shell are provided with fastening means for fixing to a rear and front end of the support base, respectively, and wherein the shell has predetermined bending points which form folding lines at the forward facing end and the rearward facing end of the shell during compression of the deformation element resulting from pivoting of the motor vehicle seat caused by an accident, each folding line extending substantially parallel to the rear axis, whereby the deformation element is deformed at least when a passenger sitting in an adjacent seat at the rear of the seat impacts the seat backrest as a result of the accident.