In a vehicle with a bumper which is attached to the vehicle transverse to the
longitudinal direction of the vehicle via a deformation element, the deformation
element exhibits two first side walls that are spaced apart, and are joined to
second side walls that are spaced apart. The first and second side walls have first
and second grooves that run transverse to the longitudinal direction of the vehicle
and are arranged in pairs opposite each other, each in a common plane. The first
grooves extend over the whole breadth of the first side walls and the second grooves
extend over only a middle part of the second side walls leaving a region free at
both edges. The first grooves are arranged in pairs in first planes and the second
grooves are arranged in pairs in second planes situation between two subsequent
first planes.
