Welcome to 5 Star Auto Plaza used car dealership in St. Charles, MO. 5 Star Auto Plaza has proudly served the St. Charles MO and the surrounding St. Louis Missouri area since 1997. We carry a wide range of used cars, trucks, SUVs, and mini vans. Our pre owned vehicles come with a warranty at no extra charge and are Missouri state safety inspected and emissions tested. Our experienced sales staff is eager to share their knowledge and enthusiasm of our available vehicles with you. You can request more information via our online form or by calling our dedicated sales staff at 636-940-7600.