Price
Call for price
Hours
Open 7 days a week
Station type
Test Only
Valley Smog & Tags is a test-only smog check station at 4629 Spyres Way, A, Modesto, CA 95356. Open 7 days a week.
Hours
- Monday
- 9 AM – 6 PM
- Tuesday
- 9 AM – 6 PM
- Wednesday
- 9 AM – 6 PM
- Thursday
- 9 AM – 6 PM
- Friday
- 9 AM – 12 PM
- Saturday
- 9 AM – 4 PM
- Sunday
- 9 AM – 2 PM
Hours from public business listings. Call to confirm before you go.
What to expect at Valley Smog & Tags
Valley Smog & Tags runs the inspection and issues the certificate but does no repairs. It is not STAR certified, so if your DMV renewal notice says "STAR Station Required" you will need a different station.
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?
- Valley Smog & Tags doesn't do repairs, so the car goes to a repair shop and comes back for the retest.
- BAR's Consumer Assistance Program pays up to $1,450 toward emissions repairs for income-eligible owners.
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4629 Spyres Way, A, Modesto, CA 95356
Get directions →Hours
- Monday
- 9 AM – 6 PM
- Tuesday
- 9 AM – 6 PM
- Wednesday
- 9 AM – 6 PM
- Thursday
- 9 AM – 6 PM
- Friday
- 9 AM – 12 PM
- Saturday
- 9 AM – 4 PM
- Sunday
- 9 AM – 2 PM
Hours from public business listings. Call to confirm before you go.
Also listed on
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Speedway Smog Center
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Nearby cities in Stanislaus County
Questions about Valley Smog & Tags
Valley Smog & Tags is open Monday 9 AM to 6 PM; Tuesday 9 AM to 6 PM; Wednesday 9 AM to 6 PM; Thursday 9 AM to 6 PM; Friday 9 AM to 12 PM; Saturday 9 AM to 4 PM; Sunday 9 AM to 2 PM.
Verify this station’s license and STAR standing at bar.ca.gov.
Listing updated October 4, 2026.
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BAR field office: Fresno • Licensed since 2024