Prototype: 3-seat class KLV 04 "enclosed" district inspector's gang car. Production of different versions of these vehicles as successors to the class KLV 01 was started in the Forties. The class KLV 04 was available as the type C3 (with a relatively large storage area) with a permanent superstructure and with a hinged roof, i.e. as a convertible, which was later rebuilt in part to a permanent superstructure due to the limited life span of the folding roof. The class KLV 04 was equipped with a 2-cylinder, 2-cycle motor and often had a 10 liter / approximately 2.5 gallon gasoline tank.