四號坦克
A further development of the Panzer IV series also by Krupp. It used leaf spring suspension, the HL 116 engine and the motor compartment of the VK 20.01(III). Maximum speed was to be 42 km/h, same as it was on the Panzer IV Ausf. C. This was later redesignated as the VK 20.01(BW) and then as the B.W.40.