They force you to pay 80€ for the gasoline, even if you rent a small car that is cheap. We've been to bilbao from barcelona where we filled the tank with less than 50€. When we got back to BCN and we asked explanations regarding that they easily told us that is a normal thing and they couldn't help you! They are robbing 30€ to anyone rent a car from them. be smart don't get robbed from them!