Don’t worry, for security reasons service stations take a guarantee of between €120 and 150 to ensure that you will pay the entire amount. It’s a type of pre-authorisation.

The difference between the amount of the guarantee and that which will really be debited from your account will be made available on your card within 3 to 4 working days.

A little tip: try to pay at the counter if possible, to avoid these prior authorisations.