Einheits-pkw were supplied to the wehrmacht  between 1936 and 1943 in the three versions leichter einheits-pkw, mittlerer einheits-pkw and schwerer einheits-pkw (light, medium and heavy passenger car). These vehicles were supposed to replace the civilian vehicles previously procured by the reichswehr with cross-country mobile vehicles. The kfz. 4 is a light version and was officially introduced end of february 1938

The car is simple and technologically advanced in production, an open all-metal three- or four-door body (in the kfz. 2 and kfz. 4 versions there was no right rear door, in place of which a fuel canister was attached outside the body) with a folding canvas top and removable celluloid windows on the upper part doors