Carvana is a unique service that bypasses the need to speak to a salesperson—you simply pick the car online, and it will be shipped to you (or you pick it up at a car vending machine). Although Carvana may have some great deals on used vehicles and you skip the hassle of visiting a dealership, you do miss the opportunity to negotiate down the price of your car. In some cases, you may get a better deal by buying from a dealership.
It's also important to note that Carvana only sells used cars and doesn't offer new vehicles.