I attempted to subscribe to a vehicle through SIXT for over a month. Their system repeatedly failed to process my booking, despite dozens of emails and multiple phone calls. I was initially told my credit was denied, only for SIXT to later admit the real issue was a system error on their side involving my city name ("New York").
By the time the issue was fixed, the price had increased by roughly 50%. Rather than honor the original price, SIXT repeatedly changed its explanation and denied facts that were documented in extensive email correspondence. After more than 40 emails and countless hours spent helping diagnose their system problem, I was left paying substantially more for the same service.
Mistakes happen. Refusing to take responsibility for them is what makes this experience unacceptable.
Recommendation: Would not rent from Sixt again
This happened to me in Miami airport after I returned the car and everything was good, then the emailed me a scan picture that captured scratches on front passenger door. I started pursuing the claim back and forth with them, and they send me a detailed bill for fixing the car, then all of sudden they dropped the claim for no reason!
I called them, the lady on the phone told me that they found out the scanner was making mistakes!