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 bad, they overcharge

Very poor, extra charges

Pretty good, but their English isn't great, hard to understand.

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.