Fuel prices in Germany rose noticeably at the start of the year due to the higher CO2 price, which has been in effect since January 1. On December 31, 2025, the nationwide average for a liter of Super E10 was €1.675. By January 1, the price had increased to €1.709, a rise of 3.4 cents. Diesel prices climbed even more, from €1.618 per liter at the end of December to €1.658 per liter on January 1, according to an analysis by ADAC in Munich.
The cost per ton of CO2 emitted from burning heating oil, natural gas, diesel, and gasoline stood at €55 in 2025. At the turn of the year, it rose to €65 per ton. For the first time, the CO2 price is now determined through the auctioning of emission certificates, making the average annual price uncertain.
Despite a rise in the CO2 price from €45 to €55 per ton at the start of 2025, fuel prices remained comparatively low throughout the year. According to the information service Clever Tanken, the average price of Super E10 in 2025 was €1.6804 per liter, five cents less than in 2024. Diesel averaged €1.6055 per liter, four cents lower than the previous year. Steffen Bock, founder of Clever Tanken, explained that the drop was mainly due to changes in crude oil prices.
He noted that oil prices had fallen for the fifth consecutive month in December, marking the longest decline in over two years, driven by expectations of a global oversupply following higher production by the OPEC+ cartel.
Among German cities, Bonn offered the cheapest Super E10 in 2025 at an average of €1.6533 per liter, followed by Berlin and Mannheim. The highest prices were recorded in Dresden (€1.7010), Hannover, and Frankfurt. For diesel, Bonn was again the most affordable city, while Leipzig had the highest prices.
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