Just like the rental from a few days ago from SF to LV: The rental slip clearly stated that a full tank of gas was included (you could return the car with any amount of fuel without refueling). However, when picking up the car at the AVIS store, not only did the AVIS contract require a full tank upon return, but the staff also emphasized this point, stating that otherwise, AVIS would charge $5.9 per gallon for fuel! Due to time constraints during pickup, there was no time to argue about the terms on the spot, so we had to sign and take the car first, then follow up with the rental company. This might be a rare occurrence, but if it happens frequently, it will definitely affect the user experience. Although the issue was eventually resolved through communication between the rental company and AVIS, confirming that we did not need to refuel upon return, the whole process was quite frustrating.