You can book your car rental in advance online or over the phone with our friendly team. As you make your reservation you can conveniently include an array of add-ons and upgrades. We make it easy to customize your rent a car with our great deals on useful extras. You can tailor your vehicle by tacking on a child seat, GPS, an additional driver, insurance packages and more. Please note that we can only guarantee you receive a vehicle in your chosen car category and not a specific car model. However, at our Vienna Liesing branch there is the possibility to try and reserve the rental car of your choice thirty minutes before pick up with the SIXT app.