The STAR program reduces what you pay for a smog inspection in California
STAR stands for Smog Check Test and Repair. It is a voluntary program run by the California Bureau of Automotive Repair that lowers the cost of your smog inspection. If your vehicle fails the test, STAR stations offer repair services at a set price, and you get a warranty on those repairs.
You do not have to use a STAR station for your smog check. You can go to any Bureau-certified smog station in California. But STAR stations are required to charge less for the inspection itself, and they must follow state pricing rules for repairs. This makes the total cost more predictable if your car needs work.
STAR stations are independently owned — they are not government offices. The Bureau certifies them and monitors their pricing and repair quality. You can find a STAR station near you through the Bureau's online locator or by searching "STAR smog check" plus your city name.
Key Takeaways
- STAR stations charge less for the smog inspection than non-STAR certified stations, and prices are set by the state.
- If your vehicle fails, STAR stations must repair it at a capped price and provide a warranty on that repair work.
- You can choose any Bureau-certified smog station, but STAR stations offer cost certainty if repairs are needed.
- The California Bureau of Automotive Repair maintains a searchable list of STAR stations by county and city.
How STAR pricing works
STAR stations follow a state price schedule for inspections. As of the most recent update, the inspection fee at a STAR station is lower than the maximum allowed at a non-STAR station. The exact amount varies slightly by region, but the state sets a ceiling that STAR stations cannot exceed.
If your vehicle fails the smog test, the STAR station can perform repairs. The state caps the labor rate for smog-related repairs at STAR stations. You pay for parts at cost, plus the capped labor rate. This is different from a non-STAR station, where the repair shop can charge whatever the market allows.
STAR stations must post their prices clearly before you authorize any work. Ask to see the price list for both the inspection and any repairs before you commit. If you are unsure whether a repair is necessary, you can take your vehicle to a different station for a second opinion.
What happens if your vehicle fails at a STAR station
When a vehicle fails the smog test, the STAR station gives you a detailed report showing which emissions systems did not meet standards. You then have the choice to repair at that station, go elsewhere, or get a second opinion first.
If you choose to repair at the STAR station, the station must provide a written warranty on the repair work. The warranty period is set by state law and covers the specific repair performed. If the same component fails again within the warranty period, the station must fix it at no charge.
You do not have to repair at the station where you failed. You can take the failed test report to any other repair shop in California. However, if you repair elsewhere and the vehicle still fails when you retest, you will pay for another inspection at whatever station you choose for the retest.
Finding and choosing a STAR station
The California Bureau of Automotive Repair maintains a searchable database of all certified STAR stations. You can search by county, city, or zip code at the Bureau's website. The listing shows the station's address, phone number, and hours.
When you call a STAR station, confirm that they are currently accepting smog checks. Some stations may temporarily stop testing due to staffing or equipment issues. Ask about their current wait time, whether you need an appointment, and what documents to bring (usually your vehicle registration and proof of insurance).
You can also ask the station about their repair history if you are concerned your vehicle might fail. Some stations can tell you whether similar vehicles in your area typically pass or fail, though this is not a may provide for your specific car.
STAR versus non-STAR stations: what differs
| Feature | STAR Station | Non-STAR Station |
|---|---|---|
| Inspection price | State-set maximum (lower) | No state price cap |
| Repair labor rate | State-capped rate | Shop sets own rate |
| Repair warranty | Required by law | Shop decides |
| Bureau oversight | Regular monitoring and audits | Standard certification only |
Both STAR and non-STAR stations must be certified by the Bureau to perform smog checks. Both must follow the same testing procedures and use the same equipment standards. The main differences are price transparency and repair warranties.
Non-STAR stations may offer faster service or more convenient locations in some areas. If your vehicle passes the inspection, the choice between STAR and non-STAR makes little difference. The advantage of STAR becomes clear only if repairs are needed.
What to bring and how to prepare
Bring your vehicle registration and proof of current insurance. The station needs these to complete the smog check paperwork. If your registration is expired, you cannot pass the smog check — the test is tied to your registration status.
Make sure your vehicle's check engine light is off before you go. If the light is on, your vehicle will fail the smog test automatically, regardless of actual emissions. You can have a mechanic read the code for free at many auto parts stores, or you can take the vehicle to a repair shop to diagnose the problem.
Fill your gas tank before the test. Some smog stations require a minimum fuel level to run the test properly. A nearly empty tank can cause a failed test even if your emissions are within range.
Understanding the smog test results
The smog check produces a printed report showing whether your vehicle passed or failed. If it passed, the station sends the results to the California Department of Motor Vehicles electronically. You do not need to do anything else — your registration renewal will reflect the passing test.
If your vehicle failed, the report lists the specific emissions readings and which standards were not met. This report is valid for 30 days. You can use it to get repairs done at any shop, or to get a second opinion from another smog station.
After repairs, you must return to a smog station to retest. You can retest at the same station or a different one. The retest fee is separate from the initial inspection fee. Once you pass, the results are sent to the DMV and your registration can be renewed.
Frequently Asked Questions
Do I have to go to a STAR station for my smog check?
No. Any Bureau-certified smog station can perform your test. STAR stations are optional, but they offer lower inspection prices and capped repair rates if your vehicle fails. If your vehicle passes, the choice between STAR and non-STAR makes no practical difference.
What if I repair my vehicle and it still fails the retest?
You pay for another inspection at whichever station you choose for the retest. If you repaired at a STAR station and the same component fails again within the warranty period, the station must fix it at no charge. If a different component fails, you pay for that repair separately.
Can I get my money back if a STAR station's repair does not work?
The warranty covers the specific repair performed. If that same part or system fails again within the warranty period, the station must fix it free. If a different emissions system fails, that is a separate repair and you pay for it. The warranty does not cover unrelated failures.
How long does a smog check take at a STAR station?
The test itself usually takes 10 to 20 minutes. Wait time depends on how busy the station is. Call ahead to ask about current wait times and whether they take appointments. Some stations can schedule you in advance, while others operate on a first-come, first-served basis.
What if my vehicle is too old or too new for a smog check?
Vehicles model year 1976 and newer must pass a smog check in California. Some very new vehicles may be exempt for a limited time. Check your registration notice or call your local smog station to confirm whether your vehicle is subject to testing.