Two portal frame constructions are used on the particularly stressed body areas in the Centurion. In the rear, one frame encloses the large opening of the car garage door and thus supports the torsional rigidity of the cabin. The second is used three-dimensionally in the living area and encloses the huge slideout. It not only stiffens the body, but also counteracts the compressive forces of the slideout air chamber seal with its strong frame.
The newly developed measures for engine sound insulation consist of several components for engine encapsulation. Silent blocks decouple the platform from the chassis. The engine receives an insulation package to the living area floor and to the side walls, as well as the original Actros noise encapsulation package. Due to a new frame design, particular emphasis was placed on the airborne sound insulation of the engine compartment lid.