The German fuel discount expires on June 30, 2026. For two months, the tax on gasoline and diesel was reduced to alleviate the burden on drivers and businesses due to high fuel prices.The relief at the pump amounted to about 16.7 cents per liter. According to the Monopolies Commission, however, only about 15 to 16 cents on average actually reached the customers.This may sound like a small difference, but when calculated over all the liters sold, it represents a significant amount of money. Of the approximately 1.6 billion euros that the fuel discount cost the government, the Commission estimates that 100 to 200 million euros did not reach consumers.Particularly for diesel, the discount was sometimes passed on less than for gasoline. There were also regional differences; in Northern and Western Germany, more of the relief reached consumers than in the South.The Monopolies Commission does not necessarily suspect the cause at the individual gas station. Rather, it sees potential competition problems at refineries and in bulk fuel trading. The industry association of the mineral oil industry disagrees and states that the tax reduction was fully passed on.For transportation companies, the discount was still noticeable. A truck with a monthly consumption of 1,000 liters theoretically saved around 167 euros. For large fleets, this quickly added up to several thousand euros.From July 1, this relief will be eliminated. If the remaining market prices do not change, diesel could become more expensive again. However, how much the price actually increases also depends on the crude oil price, exchange rates, and competition at gas stations.