NAV staff carried out 150 inspections on Monday, and all the fuel stations were in compliance with the cap, Tállai said.

There are 2,016 fuel stations in Hungary in 1,600 settlements, he added. The state secretary said inspections will be stepped up from Wednesday when NAV will also deploy mobile laboratories to examine the quality of petrol and diesel at fuel stations.

Fuel station operators violating rules can expect fines ranging from HUF 100,000 to HUF 3 million and even closures in the event of repeated infringements. In the latter case, the operation will be taken over by a registered service provider, Tállai added.