Ez-Pz Smog Check in Chula Vista holds Bureau of Automotive Repair license ARD #313879 as a STAR-certified Test Only smog station at 2446 Main Street, Suite R. Test Only designation means the facility cannot perform mechanical repairs, a consumer-protection separation mandated by California's BAR for vehicles directed to STAR stations — including those flagged by DMV or purchased through dealerships such as Toyota Chula Vista on Main Street. The station processes biennial registration renewals, change-of-ownership transfers, and out-of-state vehicle certifications using the BAR-OIS platform that transmits results electronically to the DMV. OBD-II port scans on 2000-and-newer vehicles check readiness monitors for catalytic converter, evaporative system, oxygen sensor, and misfire criteria before issuing a pass certificate. Windshield-mounted transponder or RFID-tagged vehicles requiring clear sightlines for OBD communication sometimes need prior glass replacement at shops such as Auto Glass Depot before testing proceeds. Pre-1996 gasoline vehicles receive a tailpipe emissions test measuring hydrocarbons in parts per million and carbon monoxide as a percentage of exhaust volume against model-year-specific CARB cut points.