Abstract: A motor vehicle includes a body that has a doorway. A side door is moveably held on the doorway and displaceable between a closed position and an open position. The side door has an inner door part, a reinforcement element, and a planking element. The reinforcement element has an upper deformation region and a lower deformation region. An impact damper that is a foam part is disposed inside the side door between the reinforcement element and the inner door part. The impact damper extends over at least a partial length of the reinforcement element and substantially completely fills a cavity delimited between the reinforcement element and the inner door part.

Abstract: An off-road vehicle, a pickup, or other such vehicle has an underprotection device with an impact plate fitted to the underside of the motor vehicle. To provide an improved underprotection device, the impact plate is fitted to the underside in a manner such that it is movable between retracted and extended positions.