For STAR-certified smog testing in Chula Vista, Tony's Smog Test on south Broadway operates under a Bureau of Automotive Repair Test Only designation dating to 1989. The Test Only classification eliminates conflict-of-interest concerns that arise when the same facility both tests and repairs emission systems — a structural separation absent from combined test-and-repair stations where Performance Auto Repair & Smog diagnoses and repairs the same emission faults it tests. Inspections cover the full BAR-mandated vehicle roster: passenger cars, light trucks, SUVs, full-size panel vans, utility trucks, motor homes, RVs, gross polluters, change-of-ownership transfers, out-of-state registrations, and initial-registration certifications. The station handles DMV-directed gross-polluter retests and change-of-ownership smog certifications — title-transfer paperwork that frequently overlaps with the auto-insurance filings processed at Fiesta Auto Insurance & Tax Service on the same Broadway stretch. BAR-spec analyzers measure tailpipe HC, CO, CO2, O2, and NOx concentrations at idle and 2,500 RPM on a loaded-mode ASM dynamometer to determine pass/fail status against California's CARB emission thresholds.