We did a physical walk around the car before taking the vehicle out of the garage. We went to and from the wedding destination. Parked away from almost all the cars at the wedding venue. No physical damage at all when we returned the vehicle to Sky Harbor (PHX). When taking our suitcases out of the car, we found a pair of glasses which had been left from the previous renter. I also did another physical walk around the car with the SIXT return rep, and let him know about the glasses in the car. My wife handed them to him. We get home and I received an email from SIXT stating that there was a dent and other damage on the car. We then proceeded to to let them know about the glasses we found, and that we had done physical walk-arounds with the SIXT return rep; basically letting that they know that they don't do thorough clean outs of their vehicles, and also caught them LYING about the damages to the vehicle. This business and these people are terrible and should never be trusted. They will try and charge you for anything and everything they can on the back end. Oh...and if you try to cancel, they will try and charge you one and a half times what your original charge was in the first place. Also, watch the charges on your credit card after they send you a note, stating that they will.not be making any further insurance inquiries. They will try and charge you for that as well. We fought and won on that as well. They're deceitful, dishonest, and are extremely unaccountable. LIARS! Do not rent from them!