Auto Extra is a term used to describe a car that has been upgraded with additional features. The crossword solutions for the term Auto Extra are OPTION (6 letters), Sunroof (7 letters), and Opel (4 letters). OPTION refers to an upgrade or add-on feature that can be chosen by the buyer, such as a sunroof, a navigation system, or a rearview camera. Sunroof is an extra feature that allows natural light and fresh air into the car. Opel is a German car manufacturer that produces cars with a variety of options and upgrades.