App shows I used gas before pickup – Avis - Car Rental Review

Before I pick up cars, the app always shows that the”current fuel” is less than “fuel at pick up.” Which means that I somehow used some gas even before I have the car. This results in me being charged for fuel service every time. I typically rent for day trips and the fuel charged by mistake usually cost about 20% of the rental cost. This has happened on all my recent trips.
Review by Shepherd517 on Avis - Car Rental.