A motor vehicle with a vehicle body has a vehicle body skin, an exterior illuminating device which is inserted into a slide-in opening in the vehicle body skin, and an illuminating device receiving system which is fastened adjacent to the slide-in opening on the interior side of the vehicle body skin. The illuminating device receiving system has at least one approximately horizontally oriented receiving plate and first and second fastening flanges which are connected with first and second fastening surfaces constructed on the interior side of the vehicle body skin. To optimize the gap measurement between the exterior illuminating devices and the slide-in opening, the fastening flanges and the fastening surfaces are situated in a plane with respect to which a vertical vehicle axis is parallel.