The motorhome chassis comprising —a supporting frame for providing the statically supporting characteristics, —a floor layer for defining the structural base for a living area above the floor layer, —a traction unit or an attachment means for a traction unit, —at least one cavity, in particular a stowage compartment in the region surrounding the supporting frame,wherein the cavity is detachably fastenable to the supporting frame, is constructed as an exchangeable module and serves as a crumple zone in the event of vehicle collisions.