Finally, the version 155/4c was developed:
The necessary modifications to the standard Kubelwagen were extensive. A skid was mounted on the nose, the brakes were reinforced, and the differentials were changed to optimize engine performance. In 1944, this was tested extensively alongside the Sd.Kfz. 2 Kettenkrad to compare their performance.
These trials proved that the Type 155 was able to cover the most difficult terrain, but that the vehicle was very slow and forbiddingly inefficient.
Its top speed was only 8 km/h, with fuel consumption of 150 liters/100km, which was unacceptable. The Type 155 was never produced.