A 60-liter tank of E10 gasoline cost 109 euros at the end of March. The main reason for the increase in gasoline prices is the sharp rise in oil prices.
A barrel of North Sea Brent (159 liters) costs around $90. Diesel, however, has hardly become more expensive since the beginning of the year. This is because its consistency for heating oil is very similar to that of gasoline. When it gets warmer and there is less heat there is a shift which tends to push the price of diesel down.