It is an off-road amphibious car with four-wheel drive used a lot in the Second World War. The parts and design were taken from the Beetle and Kubelwagen. Erwin Komenda is forced to develop a new body structure, as those of the existing VW would not endure in water. The assembly is found to be not sturdy enough for off-road, so the models were made smaller. It is produced in Wolfsburg. A total of 15,584 vehicles are built by 1944, with 14,276 produced by Fallersleben and 1,308 by Porsche.
The VW 166 becomes the most produced amphibious car of all times. Statistics show that 189 of them still exist. It is a four-wheel drive only on one gear plus reverses with self-locking differentials. The propeller can lower in the water, and the car would run just forward.