by engineers of the Humber Car Company, whose report said it exhibited no "special brilliance" in design except in details and that "it is suggested that it is not to be regarded as an example of first class modern design to be copied by British industry". Among the design features that contributed to the Kübelwagens performance were: Light weight. While it was some longer than the Willys MB, it weighed more than less. Very flat and smooth underbody that allowed the car to slide without snags over the surface it was traversing. Considerable ground clearance, roughly , in part thanks to: The use of portal gear hub reduction, providing more torque and ride height simultaneously. Independent suspension on all four wheels. Self-locking differential, limiting slippage and retaining traction. In addition, the air-cooled engine proved highly tolerant of hot and cold climates alike, and was less vulnerable to bullets due to the absence of a radiator. For starting under winter conditions, a special, highly volatile starting fuel was supplied from a small auxiliary tank. As the body was not a load-bearing part of the structure of the vehicle, it could easily be modified to special purposes, just like the jeep's. The Kübelwagen, thanks to its geared hubs, could go as slow as marching troops , yet reach a top speed of . Variants The following body types and variants of the Type 82 were produced: Type 62: Prototype Kübelwagen, constructed from 15 May 1938; pre-production models (1939) field tested in the invasion of Poland Type 67: 2-stretcher ambulance; Type 60 Beetle chassis with modified Type 82 body Type 82/0: Basic, standard four seater Type 82/1: Three-seater; usually radio car Type 82/2: Sirencar (Siemens motor-driven siren mounted on passenger side in place of the rear seat) Type 82/3: Mock-up scout car / armoured vehicle, incl. gun-turret atop cabin – for decoy and training purposes Type 82/5: Kübelwagen chassis, with Type 60/LO Pritschenwagen (Beetle pickup-truck) body. Type 82/6: "Tropenwagen": Kübelwagen chassis, with Beetle panel-van / box-van body Type 82/7: Three-seat 'Command car': a Type 82 chassis, fitted with a Beetle body and roll-up canvas roof section. These three-seaters had a single rear seat behind the driver, and a co-driver's seat with fully reclining backrest for a commanding officer. Type 82/8: Like regular open Type 82/0 Kübelwagen, but with body made of wood, to save on scarce steel resources Type 82/E: "Geländekäfer": Kübelwagen chassis