Vehicle headlight

The headlamp has a reflector (42) adjustable in a housing (12) by an adjustment device (10) consisting of a sleeve (30) with an internal thread and a bolt (20) screwed into the thread and attached at the ends to the reflector and housing. The lengths of the thread on the adjustment bolt and in the sleeve are sufficient so that if the bolt is screwed into the sleeve as far as a sprung stop its thread can still be unscrewed from the sleeve thread.