Some car companies helped shape automotive history, only to disappear completely. This countdown looks at 20 once-famous automakers that are no longer around. From Oldsmobile, Pontiac, Plymouth, Mercury, Saturn, and Studebaker to AMC, DeLorean, Edsel, Packard, Hudson, Nash, Tucker, Duesenberg, Willys-Overland, Trabant, Yugo, and more, these brands left behind everything from muscle cars and luxury icons to unusual experiments and unforgettable failures. We will look at why these companies vanished, including financial trouble, changing consumer tastes, corporate mergers, fierce competition, and bad timing. Some disappeared quietly, while others left cars that are now highly collectible. Whether you love automotive history, forgotten brands, classic cars, or stories about ambitious companies that could not survive, this countdown has plenty to discover. Watch until the end and tell us which discontinued car brand you would bring back.