Rheinmetall-Borsig BW - VK2001(Rh) used Neubaufahrzeug's modified running gear, while Krupp's BW - VK2001(K) and Maschinenfabrik Augsburg-Nurnberg AG's VK2002(MAN) both used MAN's newly designed running gear.
In March of 1942, 25 of Ausf F1s were later converted to Ausf F2s.
In September of 1940, 233 of Panzerkampfwagen IV's next variant Ausf E were produced by Krupp-Gruson until April of 1941.
Ausf E was the first of Panzerkampfwagen IV fitted with turret mounted storage bins (Gepack Kasten).
The vehicle was operated by five men crew composed of commander, gunner and loader in the turret and driver along with machine gunner / radio-operator in the front part of the hull.
The communication between the crew was by the use of the intercom.
The assemblies were attached to longitudinal twin quarter-elliptic leaf springs bolted to the hull.