I've rented from Sixt before and had ok experiences. They are slow with their transactions but for the low rates, I didn't complain. This time I needed to rent a car for my dads funeral so I prepaid for the car online. Since it was a Benz I had to pay $500 deposit on top of that. They've changed their policies recently since cars have been returned damage by other customers. Refunds are only by email by the way. I went to Hertz and got my car in 10 minutes. Lesson #4080 stick with Major Brands. Do not let the online low rates fool you. Sixth is not Major the best thing that can happen to Sixt is an acquisition by Hertz.