The ASE-certified technicians at Full Service Master Car Care, LLC are the experts you can trust to keep your vehicle working at top performance. For over 30 years, the team at our family-owned auto repair shop in San Antonio and Boerne, TX, has provided a full range of services at competitive prices. The ASE-certified technicians at Full Service Master Car Care, LLC are the experts you can trust to keep your vehicle working at top performance. For over 30 years, the team at our family-owned auto repair shop in San Antonio and Boerne, TX, has provided a full range of services at competitive prices.