Price
Call for price
Hours
Open Mon–Sat
Station type
Test & Repair
Appointments
Walk-ins welcome
Hours
- Monday
- 8 AM – 5 PM
- Tuesday
- 8 AM – 5 PM
- Wednesday
- 8 AM – 5 PM
- Thursday
- 8 AM – 5 PM
- Friday
- 8 AM – 5 PM
- Saturday
- 8 AM – 12 PM
- Sunday
- Closed
Good to know
Languages
English
Payment
Credit Card, Debit Card, NFC/Contactless
What to expect at 99 Smog And Tune Up
99 Smog And Tune Up is licensed by the Bureau of Automotive Repair as a Test & Repair smog station in Gridley, so it can run the inspection and, if your car fails, diagnose and fix it in the same shop. It is not STAR certified, so if your DMV renewal notice says "STAR Station Required" you will need a different station.
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?
- 99 Smog And Tune Up can diagnose and repair the problem in the same shop, then retest the car.
- 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.
1240 CA-99, Gridley, CA 95948
Get directions →Hours
- Monday
- 8 AM – 5 PM
- Tuesday
- 8 AM – 5 PM
- Wednesday
- 8 AM – 5 PM
- Thursday
- 8 AM – 5 PM
- Friday
- 8 AM – 5 PM
- Saturday
- 8 AM – 12 PM
- Sunday
- Closed
Also listed on
Other stations near 99 Smog And Tune Up
Nearby cities in Butte County
Questions about 99 Smog And Tune Up
99 Smog And Tune Up is open Monday 8 AM to 5 PM; Tuesday 8 AM to 5 PM; Wednesday 8 AM to 5 PM; Thursday 8 AM to 5 PM; Friday 8 AM to 5 PM; Saturday 8 AM to 12 PM. Closed Sunday. Hours can change on holidays, so call ahead if you are cutting it close.
99 Smog And Tune Up accepts Credit Card, Debit Card, NFC/Contactless.
Google lists the following accessibility features at 99 Smog And Tune Up: wheelchair accessible entrance, wheelchair accessible parking, wheelchair accessible restroom.
99 Smog And Tune Up has held a BAR smog license since 2005. You can verify the license status at bar.ca.gov.
99 Smog And Tune Up 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 (530) 846-4442 for a quote.
99 Smog And Tune Up does not take online bookings here, but walk-ins are welcome. Call (530) 846-4442 to check the wait.
Staff at 99 Smog And Tune Up speak English.
The closest alternatives in Gridley are First Choice Smog (0.2 mi) and Gridley Smog And Auto Repair (0.8 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: Sacramento • Licensed since 2005