The Sd.Kfz.234/4 (full name: Schwerer Panzerspähwagen 7.5 cm Sonderkraftfahrzeug 234/4 Panzerabwehrkanonenwagen) was a relatively improvised variant on the Sd.Kfz.234 chassis, created in late 1944 to prevent PaK40s from falling behind during the constant retreat of the Germans on all fronts. By removing the superstructure of the Sd.Kfz.234 and installing a PaK 40 mount with a small cut in the bottom half of the shield, the gun could roll into position, take shots, and drive at full speed in reverse.

It was introduced during Update 1.69 "Regia Aeronautica" in the "Operation S.U.M.M.E.R." event of 2017 that lasted from 28 July to 28 August, unlocked after obtaining 7 tanker Marks of Distinction. The PaK40/3 L46 (75 mm) is powerful enough to destroy most tanks with a single hit. Meanwhile, the Sd.Kfz.234/4 has a top speed of 30-40 km/h in both forward and reverse, allowing for quick relocation. It is possible, though not necessarily required, to use the 75 mm gun and return fire while moving. Terrain features such as bushes and shadows can provide excellent concealment, so make use of them to stay hidden. As a last line of defense, the Sd.Kfz.234/4 is also equipped with a pintle-mounted MG42 machine gun, which provides a high rate of fire for dealing with soft targets and low-flying aircraft.