STAR certification for smog check stations
STAR is BAR’s voluntary certification for test-only and test-and-repair stations that meet higher inspection standards. Only STAR stations may inspect directed vehicles and gross polluters, so without it you turn those cars away.
What it is
The STAR program began on January 1, 2013, and replaced the Gold Shield program. Only Smog Check test-and-repair and test-only stations can be certified. Inspectors can’t, but their scores count toward the station’s eligibility. BAR charges no fee for STAR.
Why it matters: directed vehicles
A directed vehicle’s DMV registration renewal notice says “Smog Certification Required at a STAR station.” Directed vehicles and gross polluters can only be certified by a STAR test-only station, a STAR test-and-repair station or a BAR Referee station.
- A station that isn’t STAR certified must check the DMV paperwork for the STAR designation before the inspection, and tell the customer.
- When the analyzer can reach BAR’s database, the EIS or OIS won’t let a non-STAR station inspect a directed vehicle.
- A directed vehicle that fails can only get its after-repair certificate from a STAR station or a BAR Referee.
What STAR stations must offer
- Testing and certification of every vehicle subject to Smog Check, including gross polluters.
- Testing and certification of directed vehicles, whatever the station’s program area.
- The equipment to test every vehicle type in the program.
STAR test-and-repair stations may also take part in BAR’s Consumer Assistance Program (CAP).
Who is eligible
- Licenses renewed on time, signs and license posted, estimates, invoices and records done right, the required manuals, and working equipment, including the EIS and OIS.
- Enough inspections last quarter for BAR to measure performance.
- Last quarter: a Similar Vehicle Failure Rate at least 50% of the statewide rate for similar vehicles, gear shift incidents on no more than 2% of certified vehicles, and an excessive test deviation rate of no more than one.
- A Follow-up Pass Rate (FPR) of 0.40 or more for every inspector on the station’s table, or 0.40 or more for the station with every inspector at 0.40 or more or unscored.
- No final citation for the listed Smog Check violations in the past year, and no suspension, probation or related conviction in the past three years.
- No STAR withdrawal in the past six months.
The Follow-up Pass Rate
The FPR checks whether cars a station or inspector certified last cycle pass this cycle at a higher rate than expected, compared with similar cars statewide. Scores run from 0 to 1, and above 0.50 is better than average. BAR updates them every six months, in January and July. See yours on the STAR Report Card.
How to apply
- Check your scores on the STAR Report Card.
- Send BAR the STAR Station Certification Application (PDF).
- If you’re denied, you can reapply the next calendar quarter.
STAR certification doesn’t transfer to a new owner. A new owner applies for a new ARD registration and station license, then for STAR once eligible.
Common questions
What is a directed vehicle?
A car whose DMV registration renewal notice says it must be certified at a STAR station. Only a STAR station or a BAR Referee can certify it.
Can a non-STAR station inspect a directed vehicle?
No. Only STAR stations may inspect directed vehicles and gross polluters. When the analyzer can reach BAR’s database, it blocks the inspection.
Does STAR certification cost anything?
No. BAR charges no application fee for STAR.
What FPR score does a STAR station need?
0.40 or more. Every inspector on the station’s table needs 0.40 or more, or the station needs 0.40 or more with every inspector at 0.40 or more or unscored.
Related guides
Official sources
- BAR, STAR program
- BAR, STAR certification
- BAR, STAR frequently asked questions
- BAR, Apply for a license
- BAR, Smog Check Manual (April 2025)
- BAR, Smog Check
This guide is a summary. BAR, the DMV and CARB are the official sources, and the rules can change. Check the sources before you rely on it.