The worst rental company I have dealt with in 20 years of renting cars in Europe. They left me stranded with an injured child 4 hours from the place we were staying at because they couldn't fix a flat tire and then sent me to Milan airport (4 hours away) to pick up replacement. To top it all off they then sent me a fine 3 months late by which point I had to pay 180euro instead of original 60eur amount and then also charged admin fee of 30eur on top. I disputed the admin fee and asked them to pay the difference in the fine amount since it has gone up due to their fault. They didn't answer for a few weeks and then referred my case to a debt collection agency so the admin charge went from 30eur to 180eur because eCollect created multiple bogus charges like researching my address (why did Sixt not provide them my contact details?), sending me multiple reminders (which they never did), estimating if I will pay etc. etc. Sixt have refused to help me with this and I have now opened a complaint against them with the European Car Rental Conciliation Service so hoping I will get my money back that way which is 180eur debt collectors fee plus overpayment on original traffic fine of 120eur so 400eur is what Sixt cost me due to their extreme level of incompetence.