The price of fuel in Germany can change several times a day. According to benzinpreis-aktuell,
up to 20 price changes a day are absolutely normal here - at each individual gas station.
differences up to 25 Eurocent per liter are not excluded.
The same website goes on explaining that
Unfortunately, you cannot tell exactly at what time you can refuel in Germany. However, it can be noted that you should prefer to refuel in the evening (between 4pm and 9pm). Extremely high prices are usually paid at night and early morning.
It goes without saying that 25 cents per liter is a huge difference. I have 2 questions:
- Are there general rules to find the lowest price on a certain day? Is it true that the best time is between 16 and 21?
- Does the day of the week matter? Is there a difference between working days (Monday to Friday), Saturdays, and Sundays?