Volkswagen Beetle
The VW Beetle is one of the definitive cars of the 20th century. Since over 22 million left the factories, it is logical that it was used for numerous purposes due to its versatility. One of them is a police car. VW Beetle was a legitimate patrol car in Germany and many other European countries for many years (via Road and Track).
It didn’t win any high-speed pursuits and proved itself on the Autobahn. But for patrol work and as an urban police car, the VW Beetle was more than appropriate.