Big A Parts & Service is a full service automotive facility locally owned and operated in Dubuque IA. Big A delivers honest and professional automotive repair and maintenance services for all makes and models of foreign and domestic vehicles including cars, vans, light trucks and SUV's. A variety of parts are kept in stock for all of the do-it yourself mechanics. Big A Auto Sales is a certified dealer of pre-owned vehicles . Every vehicle gets a full service oil change and all necessary repairs are performed by our ASE certified technicians before they are placed on the lot.