STAR Certified Smog Check Stations in Union City, CA

5 STAR certified stations in Union City, California, out of 6 licensed smog check stations total. A STAR station is specially certified by the Bureau of Automotive Repair — some vehicles are required by their DMV renewal notice to test at a STAR station specifically. See our STAR certification guide for details, or view all 6 stations in Union City if STAR isn't required for your vehicle.