A motor vehicle includes, but is not limited to a bulkhead for separating a vehicle interior space from an engine bay. The entire bulkhead in its upper area at a first bending point bends toward the front side of the vehicle (=forward), to then extend upwardly from there in a forward-arched area, where it forms a window support for a windshield. The bulkhead has an air inlet opening in a forwardly arched area that is connected with the vehicle interior space to supply air to the latter.