Petrol Tourists Flock to Poland in Search of Cheap Fill Ups

The Polish government’s program to cap fuel prices at the pump is enticing drivers from nearby countries to cross the border and fill up with the some of the cheapest petrol in the European Union.

The trend was first spotted by economists at PKO Bank Polski SA, the country’s largest lender, after Polish retail sales figures on Monday showed a 13.4% constant-price rise in fuels in April versus March. The data didn’t gel with the bank’s own data, which showed virtually unchanged personal-card transactions at filling stations last month.

The fuel-sales jump “was likely due to increased demand from businesses ...