System for mounting a headlamp in a vehicle and vehicle with such a mounting system

The system has a guide unit (7) fixed to a headlight (2), rail unit fixed to a vehicle. The guided unit moves on the rail by successive ruptures when the vehicle collides with an impacter (10). The movement of the guided unit causes the tilting of the headlight with respect to the vehicle, where the tilting of the headlight corresponds to a rotation movement of the headlight about the center of rotation. An independent claim is also included for a motor vehicle comprising a headlight.