Other Business Units
We are glad to answer your questions straight away about your reservation or invoice by chat.
Rental agreement/invoice number
You will find the rental agreement or invoice number on your rental agreement. This is a numerical code which you are asked to enter in full. This numerical code can be found on your invoice here ...
Credit card, customer or account number
Please enter your full credit card number if payment was effected via credit card.
If payment was effected via Maestro Card/Girocard the indication of your account number is sufficient.
Moreover, you will also have the opportunity to enter your Sixt Express Card number for identification.