The invention relates to a system for deviating part of an external panel of a motor vehicle, during an accident to reduce the impact energy of a person colliding with deviated part of the external panel. The part is displaced in a deviation direction that is opposite to that of an impact direction of the person. The system includes a device for deviating the part. The device is engaged at least at one point on the part and permits a displacement of the part in the impact direction, if a person collides with the part.