Amendments, Cancellations & Extensions

If you're looking to cancel, change or extend your rental agreement with Sixt, we make it quick and simple for you. Below you can find a list of our most frequently asked questions regarding rental agreement amendments. If we were unable to answer your question, feel free to contact our friendly customer service team here who will be more than happy to help..

I have rented a car with Sixt, can I extend the Rental Agreement by phone?

  • For 'Pay Later' type rentals, extension requests by phone are possible up to a maximum of  5 days, depending on the increase in cost.
  • Whereas 'Pay Now' type rentals, extension requests by phone are possible up to a maximum of  3 days. Any longer will need to be done in the branch.

What is the charge to cancel a reservation?

If you have made a prepaid reservation you will be charged a cancellation fee. The cancellation fee will be up to the first 3 days of the rental rate.  If the rental is less than 3 days, it will be the full rental. However, you can change the reservation to another date for only £0.01 until December 31st, 2020.

Pay on arrival cancellations may be made free of charge.

How much notice must I give to cancel a reservation?

Cancellations can be made at any point prior to the start of the rental. Please note if a prepaid reservation is not cancelled prior to the start time and then not collected, the rental amount will still be charged to the customer in full.

How do I amend or cancel a reservation?

Cancellations or amendments can be made via My Sixt' or contacting our Customer Services team on +44 (0) 207 0 188233.

What is the charge to amend a reservation?

​​​​​​SIXT offers you full flexibility so that you can stay mobile and make your travel plans with confidence. Bookings made with the "Pay online" option can be changed for only £0.01 until December 31st, 2020. If your change leads to a price increase, only the difference in tariff will apply. No additional rebooking fee will be charged. If you booked with the "pay later" option, then you can change your reservation as any time with no additional cost.

If you want to proceed with your changes, please locate the security code on your confirmation email and make your changes here.

How much notice must I give to amend a reservation?

  1. Prepaid amendments must be made at least 48 hours prior to the start of rental.
  2. Amendments to flexible bookings can be made at any point prior to the start.

Please note all amendments are subject to availability and current pricing.