It's okay

Due to communication issues, I only needed an additional driver insurance, but the rental company charged me for comprehensive insurance, resulting in double charges of 773.45 euros. I had previously chosen the super supplemental insurance with my booking on the rental platform, meaning I wouldn't need to pay any extra fees in case of any issues. I couldn't contact the rental platform while abroad, and I am currently resolving the issue with them after returning home.

Very poor, extra charges

The staff's attitude was average

The Avis counter staff at Barcelona airport said that I don't need to refuel the car, claiming that the company's fuel charges are the same as the gas stations. I used less than half a tank and didn't refuel before returning the car, but later I was charged for a full tank. This staff member seriously misled me about the fuel price and refueling rules, avoiding the important details, which is completely fraudulent.