One time we had to argue with a Hertz intown location in Chicago - at Mckormick Center. The car they gave us was shown full on the contract print out, but when we got in the car which was brought to the curb just outside the office - we found it was just about 3/4 full. We went back to the office and it took about 10 minutes to iron this out and the manager would only adjust it to 7/8 full. Not wanting to waste more time, we took off. What we suspected was the car was used for running errands at the agency but they tried to push it to the customer (it was an unwanted upgrade, from a Mazda 6 to a Siebling. We wound up paying $40+ in gasoline for our r/t to Toronto).