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.

I booked a mini but they said they never had a mini and gave me a Skoda instead. But it was a new car, so it's acceptable.

We rented a Touran for four people because it has a large trunk that can hold four people's luggage. However, on the day of pickup, we were given a small BMW. The luggage barely fit, let alone any shopping! Poor experience.

The car had some passive damage without evidence, thankfully I bought full insurance. When returning the car, I filled out a report and explained the situation in English. The insurance covered it, so I didn't have to pay. The return process was very quick.

Picked up the car in Madrid; the originally booked Volkswagen Touran was replaced with a Fiat diesel car. I'm not sure if this was an upgrade. The diesel car is slower to accelerate. The pick-up location was decent. However, the drop-off in Granada was on a Sunday. It never occurred to me, nor did anyone inform me, that the store would be closed on Sundays. As a result, I couldn't find the drop-off location and there was no attendant. Fortunately, a very kind local helped me by calling the Madrid store to inquire about the drop-off details, then accompanied me to the designated parking area and showed me where to drop the keys into the box at the store entrance. Since they pre-charged me for a full tank of fuel at pick-up, I contacted the rental company's customer service multiple times via email. Luckily, when I returned to Shanghai, I saw that the bank only deducted the car rental fee.