Drive in comfort in a stylish Boulder car rental when you choose to rent with SIXT. Our Boulder locations are easy to access, including the downtown delivery service. We offer competitive prices on a wide range of first-class cars, so you’ll always find something to fit your budget, whether you want an economical car or something larger. Whether you need a luxurious SUV for wintertime activities or a basic sedan to help you save money, we have just the car for you.