Price
Call for price
Hours
Open Mon–Fri
Station type
Test Only
Appointments
Walk-ins welcome
Hours
- Monday
- 10:30 AM – 5:30 PM
- Tuesday
- 10:30 AM – 5:30 PM
- Wednesday
- 10:30 AM – 5:30 PM
- Thursday
- 10:30 AM – 5:30 PM
- Friday
- 10:30 AM – 5:30 PM
- Saturday
- Closed
- Sunday
- Closed
Good to know
Languages
English
Payment
Credit Card, Debit Card, NFC/Contactless
What to expect at Cruz In Smog Check
Cruz In Smog Check is licensed by the Bureau of Automotive Repair as a Test Only smog station in Byron. It runs the inspection and issues the certificate but does no repairs. It is STAR certified, so it can test vehicles the DMV directs to a STAR station, including gross polluters.
Walk-ins are welcome. Most smog checks take 15 to 30 minutes, and most visits are closer to 20.
What to bring
Your registration or DMV renewal notice
It says whether the car needs a STAR station.
The car, with the check engine light off
On a 2000-or-newer car, a lit check engine light fails the test on its own.
A way to pay
The $8.25 state certificate is paid on top of the test when the car passes, unless the station's price or coupon includes it.
What if I fail?
- Cruz In Smog Check doesn't do repairs, so the car goes to a repair shop and comes back for the retest.
- Each station sets its own retest price, so ask before the first test.
- BAR's Consumer Assistance Program pays up to $1,450 toward emissions repairs for income-eligible owners.
3000 Taylor Ln Unit A, Byron, CA 94514
Get directions →Hours
- Monday
- 10:30 AM – 5:30 PM
- Tuesday
- 10:30 AM – 5:30 PM
- Wednesday
- 10:30 AM – 5:30 PM
- Thursday
- 10:30 AM – 5:30 PM
- Friday
- 10:30 AM – 5:30 PM
- Saturday
- Closed
- Sunday
- Closed
Also listed on
Nearby cities in Contra Costa County
Questions about Cruz In Smog Check
Cruz In Smog Check is open Monday 10:30 AM to 5:30 PM; Tuesday 10:30 AM to 5:30 PM; Wednesday 10:30 AM to 5:30 PM; Thursday 10:30 AM to 5:30 PM; Friday 10:30 AM to 5:30 PM. Closed Saturday and Sunday. Hours can change on holidays, so call ahead if you are cutting it close.
Cruz In Smog Check accepts Credit Card, Debit Card, NFC/Contactless.
Google lists the following accessibility features at Cruz In Smog Check: wheelchair accessible parking.
Cruz In Smog Check has held a BAR smog license since 2017. You can verify the license status at bar.ca.gov.
Cruz In Smog Check has not published a price on SmogCheckDeals. The Bureau of Automotive Repair puts the statewide average at $69.16 as of August 2026, about $65 for a 2000-or-newer vehicle and $73 for 1999-or-older, plus the $8.25 certificate fee. Call (925) 308-6335 for a quote.
Cruz In Smog Check does not take online bookings here, but walk-ins are welcome. Call (925) 308-6335 to check the wait.
Staff at Cruz In Smog Check speak English.
How we get this data: BAR licenses and STAR status, Google hours and ratings, coupons published by the station.
Verify this station’s license and STAR standing at bar.ca.gov.
Own this shop? Add photos
BAR field office: Hercules • Licensed since 2017