Price
Call for price
Hours
Open Mon–Fri
Station type
Test Only
Appointments
Walk-ins welcome
Hours
- Monday
- 8:15 AM – 5 PM
- Tuesday
- 8:15 AM – 5 PM
- Wednesday
- 8:15 AM – 5 PM
- Thursday
- 8:15 AM – 5 PM
- Friday
- 8:15 AM – 5 PM
- Saturday
- Closed
- Sunday
- Closed
Good to know
Languages
English
Payment
Credit Card, Debit Card, NFC/Contactless
Parking
Free parking lot
What to expect at Chabot Smog
Chabot Smog is licensed by the Bureau of Automotive Repair as a Test Only smog station in Castro Valley. 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?
- Chabot Smog 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.
20747 Lake Chabot Unit B, Castro Valley, CA 94546
Get directions →Hours
- Monday
- 8:15 AM – 5 PM
- Tuesday
- 8:15 AM – 5 PM
- Wednesday
- 8:15 AM – 5 PM
- Thursday
- 8:15 AM – 5 PM
- Friday
- 8:15 AM – 5 PM
- Saturday
- Closed
- Sunday
- Closed
Also listed on
Other stations near Chabot Smog
Smog World & Lube
2780 Castro Valley Blvd
Larrys Automotive Service
20516 Stanton Ave
Quality Auto Care
2896 Castro Valley Blvd
Castro Valley Union 76
2443/2445 Castro Valley Blvd
Clean Air Auto Repair
17034 Foothill Boulevard
Nearby cities in Alameda County
Questions about Chabot Smog
Chabot Smog is open Monday 8:15 AM to 5 PM; Tuesday 8:15 AM to 5 PM; Wednesday 8:15 AM to 5 PM; Thursday 8:15 AM to 5 PM; Friday 8:15 AM to 5 PM. Closed Saturday and Sunday. Hours can change on holidays, so call ahead if you are cutting it close.
Chabot Smog accepts Credit Card, Debit Card, NFC/Contactless.
Google lists the following accessibility features at Chabot Smog: wheelchair accessible entrance, wheelchair accessible parking.
Chabot Smog has held a BAR smog license since 2009. You can verify the license status at bar.ca.gov.
Chabot Smog 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 (510) 885-1941 for a quote.
Chabot Smog does not take online bookings here, but walk-ins are welcome. Call (510) 885-1941 to check the wait.
Staff at Chabot Smog speak English.
The closest alternatives in Castro Valley are Smog World & Lube (0.1 mi) and Larrys Automotive Service (0.2 mi). Both are listed further up this page with their ratings and hours.
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 2009