Test and Repair station Concord, Contra Costa County
Clayton Auto Service
4746 Clayton Rd, Concord, CA 94521
Clayton Auto Service is a licensed test and repair smog check station at 4746 Clayton Rd in Concord and is STAR certified. Its state license dates to 2017, which makes it number 18 of 34 Concord stations by time licensed.
What this station can do
This is a test and repair station. It can test your car and also fix emissions problems if it fails, then retest it.
Because it is STAR certified, it can test cars the DMV directed to a STAR station. What STAR means.
Hours
| Friday | 8:30 AM to 7 PM |
|---|---|
| Saturday | 8:30 AM to 7 PM |
| Sunday | Closed |
| Monday | 8:30 AM to 6 PM |
| Tuesday | 8:30 AM to 7 PM |
| Wednesday | 8:30 AM to 7 PM |
| Thursday | 8:30 AM to 7 PM |
License check
You can look up this station's license on the state's own site. Search the number below at search.dca.ca.gov. A smog check only counts if the station is licensed on the day of your test.
- Smog station license RC 285959
- Auto repair registration ARD 285959
- License expires 2027-02-28
Own this station? Fix your hours, phone or services.
Before you go
- Bring your DMV renewal notice if you have one, and the car's registration.
- Drive at least 20 minutes first so the engine is warm.
- If the check engine light is on, you will fail. Here is why.
- Prices are set by each station. The statewide average and what drives it are in our price guide.