Precision Tune Auto Care (PTAC) is a national automotive-service franchise headquartered in Leesburg, Virginia. What began as founder Bill Childs’ single “tune-up” shop in Beaumont, Texas in 1976 has grown to 340+ centers worldwide and more than 1,000 certified technicians. For nearly 50 years, PTAC has offered motorists a one-stop alternative to the dealership for factory-scheduled maintenance, diagnostics, and light-repair work.