The KR 175 (KR stands for cabin scooter) had a single-cylinder engine with 173 cc displacement and 9 hp from Fichtel & Sachs. That was enough for a top speed of 80 km/h. The daily output was up to 80 vehicles, with a retail price of initially 2100 DM. At the beginning of 1955, the successor model KR 200 appeared with a 10.2 hp engine (191 cm³) and a top speed of around 90 km/h. Like an automobile, the KR 200 had three pedals (clutch, brake, gas) and on the right inside of the vehicle is the gear lever with "sequential" ratchet shifting: pull back = downshift, push forward = upshift. First gear is behind. To drive backwards, the two-stroke engine is started in the reverse direction. When the ignition key is inserted and turned, the engine turns clockwise and all four gears can be used to drive forward. When you insert and simultaneously press and turn the ignition key, the engine runs to the left. You can therefore also drive backwards in all gears, theoretically backwards as fast as forwards. A mechanical reverse gear was available at extra cost. There was the version with a Rhenalon hood, a transparent plastic hood that could be rolled up. When the weather is nice, the hood should be stowed in the trunk above the engine and, if necessary, fitted in a few simple steps. However, it soon became apparent that the UV radiation and the heat generated in the trunk were causing the hood to lose its elasticity. When trying to roll the hood, the material tore. In a recall campaign, the hoods were exchanged for a version made of plexiglass. The already printed brochures for the first variant of the KR 200 were not pulped, but the corresponding areas on the back were blacked out. In September 1956, the KR 201 appeared as an "economy version" of the KR 200, a roadster variant without side windows and with a scissor hood for an extra charge. Contemporary, the interior was available in imitation snakeskin, various parts were chromed. However, this type of vehicle is rarely found in the original today. A convertible version of the KR 200 appeared in 1958. The top was tensioned with three bows and fastened to the hood frame with snaps. You could now drive the vehicle with a Plexiglas hood in winter and use a convertible in summer with little effort.