Possessing a medium caliber-rifled armor piercing gun, and a MG42 machine gun, the Autoblinda 43 was meant to replace the Autoblinda 40 as a heavy recon vehicle, but was later turned into an anti-infantry battle 'tank'.
The Autoblinda AB 43 was basically an upgraded AB 41 with more powerful engine, a new lower and wider turret and revised exhaust system and provision for 7 jerry cans on external racks and was still armed with a 20mm main gun and two 8mm machine guns as well as having four wheel drive and steering. It was planned to upgrade the AB 43 with a 47 mm anti-tank gun, but those plans were disrupted by the Italian surrender in September 1943.
The AB43s were used during World War II in North Africa, Italy, Hungary, and on the Eastern Front.
After the Italian surrender to the Allies, The AB 43 armored car was used by German units under the German designation – Panzerspähwagen AB43 203(i).