Special Smog Test Only on Chula Vista's Broadway near K Street is a California Bureau of Automotive Repair STAR-certified test-only station that has inspected vehicles since 2000. The facility's oversized drive-through bay accommodates RVs, motorhomes, and heavy-duty diesel trucks that cannot fit standard dynamometer stations — a large-vehicle capability shared with the quick-service lane at Jiffy Lube Oil Change. As a test-only station, Special Smog performs no mechanical repairs, eliminating the conflict of interest that can arise when the same shop diagnoses and fixes emissions failures. ASE-certified technicians run BAR-97 emissions analyzer and OBD-II scans, covering tailpipe opacity for diesel vehicles and evaporative-system integrity tests for gasoline models. The station prints itemized emissions reports showing hydrocarbon, carbon-monoxide, and nitrogen-oxide readings against California thresholds — pass-fail documentation that Broadway-corridor vehicle owners file alongside wash-and-detail receipts from Super Star Car Wash at Palomar and Third Avenue. The station's most complex inspections involve gross-polluter retests using loaded-mode ASM 25/25 and ASM 50/15 protocols on pre-2000 gasoline vehicles flagged by the BAR's directed-vehicle program.