Surprised by the poor reviews. We landed on Thursday afternoon, went straight to the collection desk, no queue when we arrived. Kim behind the desk was great, very swift check-in. Kim even upgraded our car for us free of charge, thanks Kim! The car was great, low mileage with loads of extras like heated seats, heated steering wheel and panoramic sunroof, it was also immaculately clean. I had a good look at the other cars in the Sixt garage and they have a very new fleet of hire cars compared to Europcar and Hertz. Returning the car was nice and easy. Would use again, dont be put off by bad reviews.