Motor vehicle with a movable partition wall

The vehicle has a movable partition inside and a bulkhead panel (20) which is horizontal in the non-use position and which in the useful position is folded upwards about an edge which forms a hinge line so that one of its side edges adjoins the partition (8) and the other adjoins the side wall. The edge of the bulkhead panel forming a hinge line forms an approximately right-angled triangle in the basic outline with the partition and side wall.