I rented a car from them. And I prepaid for fuel in the amount of $88. When I brought back the tank three quarters full they still charged me $88. I called the customer service hotline and asked them about this charge, and informed me that it's in the FinePrint of the prepayment fuel document, that it doesn't matter if the tank was empty or three quarters of a tank full, they still charged me the full amount. Lesson learned Never prepay for fuel and never rent from thrifty