Ryan’s Automotive Service Center is a professional certified full service facility located in Fairfield, CA. We specialize in diagnostic work, preventative auto maintenance, car service, diesel service and car repair. \nHere at Ryan’s Automotive we can handle everything from a simple oil change to highly complex electrical or \ncomputer work, as well as heavy- duty work such as engine or transmission replacement. We are using the most \nsophisticated computers and equipment available in\nthe automotive industry today.\nWe are a qualified smog, brake, lamp, inspection facility.