I told the rental company not to add any extra services, but they still upgraded the vehicle and added roadside assistance. I signed without checking closely and ended up with a lot of additional charges.

The service attitude is good, but the speed is too slow. The waiting time is at least half an hour! When returning the car, it was confirmed that the tank was full, no need to refuel or pay, but I was still charged $20.89 for refueling without any notification!!!

Service attitude, waiting time, and vehicle condition need to be addressed separately: Our flight arrived at 10 PM local time, and we got to the rental office around 11 PM. Many rental companies are located on the same floor, and some had no staff at their counters. AVIS had the longest line, which we didn’t expect. After waiting for half an hour, it was our turn. The procedure was normal. The clerk asked if we needed an SUV and how many people and luggage we had, then gave us a Jeep Cherokee. I asked if it was the Grand Cherokee, and he said yes. When we went to pick up the car, we realized the model was much smaller than what we booked. We called the rental company several times but they needed time to process it. Eventually, we went back to the counter, by then the male clerk had gone off duty and we were helped by a female clerk. She admitted we were given a downgraded car and offered a full tank of gas as compensation, which didn't matter much as gas is cheap in the US. We asked for the price difference, and she printed out the receipt showing a difference of $220. It was clear we were downgraded without any notice. After confirming the downgraded price, we took the car since they didn't have the same class available. This whole process took us a long time and we got to our hotel very late, making this experience very unpleasant.

Convenient

We rented cars from this company for three separate legs of our self-driving trip in the USA. We chose this big company for its reputation, and everything went smoothly.