I rented a car for two weeks this time. It was my first time renting a car in the UK. Hertz was quite reliable. I originally wanted to rent a Juke, but since there were no cars available, they upgraded me to a Mercedes directly. Returning the car was super fast. I was supposed to return it on the morning of October 12th, but I was worried the return process would be complicated, so I returned it on the evening of the 11th instead. The return process was incredibly fast. Not sure if it was because I bought full insurance. I asked if there would be any additional penalties or fees, and they said no, all done. I hope there won't be any extra charges later. Overall, I'm quite satisfied.