If your vehicle failed California smog, you have options. STAR-certified shops offer a FREE retest within 30 days of the first inspection (per BAR STAR program). Cal Smog Network has 5 test-and-repair locations across SoCal that can diagnose, repair, and re-test in the same visit — no second appointment needed. Cap on consumer assistance: $850 (BAR Consumer Assistance Program for low-income drivers).
Available at these network shops
Frequently asked questions
My car just failed smog — what do I do?
First, check the failure report — it lists exactly what failed. If it's a check engine light or OBD readiness issue, the fix is often minor. Bring the failure report to a test-and-repair shop. STAR stations offer a FREE retest within 30 days after repair.
How much does smog repair cost?
Wide range: $50-150 for a simple O2 sensor, $400-800 for a catalytic converter, $1,500-3,000 for major emissions repairs. BAR's Consumer Assistance Program covers up to $850 in repairs for qualifying low-income drivers.
Can I just keep retrying the smog test?
No — California requires repair after a failure. The DMV won't renew your registration without a passing certificate. After 30 days you can re-inspect, but most shops require diagnostic/repair documentation.
Where can I get smog repair near me?
Cal Smog Network's test-and-repair shops in Carlsbad, Encinitas, Escondido, and Oceanside diagnose + repair + retest in the same visit. Muffler & Cat Depot in Escondido handles catalytic converter and exhaust-specific repairs.
What if I can't afford the repair?
BAR's Consumer Assistance Program (CAP) offers up to $850 in repairs to qualifying low-income drivers. Apply at www.bar.ca.gov/CAP. Cal Smog Network's repair shops can help you complete the CAP paperwork.