When paying for fuel please check that the cashier has applied the 25 cent discount. Today at a Repsol station just north of Madrid paid for fuel with credit card and then went to the cafe counter to get a coffee. I noticed on the fuel receipt that there was no discount so I went back to the cashier who immediately gave me the correct amount of discount in cash without even looking at the receipt and claiming that I had walked out before she could give me the cash. In the last month I have used 3 different petrol stations and had the discount applied when paying, every time on credit card.