A warning to all who rent from Sixt in Europe:

We rented in Munich in June on a pleasure trip. Upon return, we were first charged for fuel even though we had filled the tank just before returning the car to the MUC airport. When brought to the attention of the staff, (with refueling receipt in hand ) the charge was reluctantly removed, with no explainations and no real apology. ( We had to take a lot of extra time to go to the counter inside the terminal to get this rectified.)
Then our credit card bill arrived this week, with an extra charge of Euro 18 added to the Sixt bill. The answer to my e mail inquiring about this charge yielded a reply that it was for "extra cleaning" required after the car's return.
(I can assure you that the car was as clean as it had been when we picked it up when we returned it. In fact, we rarely drove the car during our stay.)

I guess Sixt will stoop to any measure to get a few extra bucks out of it's customers, especially when they think being on the other side of the pond we have little recourse.

Am curious to know if anyone else has had this problem with them? And any ideas as to how to proceed from here? My company has a corporate agreement with Sixt and gives them a lot of European business. I doubt they will be pleased to here about this...