Customizing your rent a car is also possible with our great deals on add-ons and upgrades. Useful extras such as additional driver coverage, GPS, a child seat, coverage packages and more can help you have an optimal driving experience. Book ahead online or in the Sixt app and add your optional features as you make your reservation. Be aware we can only guarantee you to receive a vehicle in your chosen car category and not a specific model. There is a chance, however, to reserve the rental car of your choice shortly prior to pick up with our iPhone app. At our Munich Grünwald branch you can also benefit from our courtesy 24-hour vehicle returns for flexible travels. Enjoy a hassle free car rental with Sixt!