Car factory in Hungary (Photo: European Commission)
The EU has intervened to prevent car manufacturers from having different prices in different EU countries. The intervention has caused price increases in the countries where manufacturers have sold their cars cheaply because of high internal taxation. The EU allows the parallel import of cars and prohibits the division of markets.
Taxes vary in the EU for the registration of new cars and can only be made consistent (harmonised) by a unanimous decision.

The EU has intervened against extra taxation on used cars when they are imported from a low tax to a high tax country.