"This is a Kübelwagen mounted with a MG42.It's role is to provide firepower and mobility to the current assault."— Official game quote
This bad boy will race through to a position, unload suppressive fire, then keep going and laying suppressive fire. It's soft skinned, so a zook, an AT gun, or even a gunner will kill it, though if everything goes wrong, mines do the job. It also appears in the nasty Panzerkampfwagen Blitz with its best friend, the Panzer IV and can be seen amongst the Total Blitzkrieg Wave. It's the German equivalent of your Jeep. Kübelwagens will not count as flankers if they pass your lines.
How do I kill it?
Easy to kill, the crew can be shot out, or you could just blow it up. Grenades can kill it if lands on its center. Mines or TNT will work also. After patch 2.2.7b if the Kübelwagen's crew dies it no longer counts as a vehicle on the battlefield and can not catch crates. But 'zooks still count them as vehicles and will aim for them.
The Volkswagen Kübelwagen (short for Kübelsitzwagen, meaning "bucket seat car") was a military vehicle designed by Ferdinand Porsche and built by Volkswagen during World War II for use by the German military (both Wehrmacht and Waffen-SS). Based heavily on the Volkswagen Beetle, it was prototyped as the Type 62, but eventually became known internally as the Type 82.
With its rolling chassis and mechanics built at Stadt des KdF-Wagens and its body built by US-owned firm Ambi Budd in Berlin, the Kübelwagen was for the Germans what the jeep was for the Allies. It was also used as a unarmed recon vehicle, but this version features a MG-42 7.92mm machine gun attached. More than 50.000 of this were built for the war effort.