Compare rates across Rakuten and TopCashback to get the most back at Sixt.
The best current rate for Sixt is 10%, through Rakuten. Cash back on travel bookings usually posts after your trip is completed, not at the time of booking. As with any cash back purchase, avoid coupon sites that aren't on this list - stacking an unrelated code can sometimes void tracking.
Start at Rakuten's 10% link above rather than going to Sixt directly. From there, shop as usual and the order tracks on its own.
Rakuten currently leads at 10% for Sixt. We keep 2 providers on this page specifically because that ranking shifts.
Both spellings mean the same thing. We write it as "cash back" (two words) throughout this Sixt comparison, but you'll often see "cashback" (one word) used interchangeably elsewhere - so search however feels natural to you.