No appointment necessary
12401 Woodruff Ave #1
Downey, CA 90241
(562) 803-3030
Most cars
Coupon by: SmogCheckDeals.com
Price
Call for price
Hours
Open Mon–Sat
Station type
Test & Repair
Appointments
Walk-ins welcome
STAR Certified - Authorized for directed vehicles and gross polluters
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 – 3 PM
- Sunday
- Closed
Photos of JJ's Auto Service
Good to know
Languages
English
Payment
Credit Card, Debit Card, NFC/Contactless
What to expect at JJ's Auto Service
JJ's Auto Service is licensed by the Bureau of Automotive Repair as a Test & Repair smog station in Downey, so it can run the inspection and, if your car fails, diagnose and fix it in the same shop. 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?
- JJ's Auto Service 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.
12401 Woodruff Ave #1, Downey, CA 90241
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 – 3 PM
- Sunday
- Closed
Also listed on
Questions about JJ's Auto Service
JJ's Auto Service 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 3 PM. Closed Sunday. Hours can change on holidays, so call ahead if you are cutting it close.
JJ's Auto Service accepts Credit Card, Debit Card, NFC/Contactless.
Google lists the following accessibility features at JJ's Auto Service: wheelchair accessible entrance, wheelchair accessible parking, wheelchair accessible restroom, wheelchair accessible seating.
JJ's Auto Service has held a BAR smog license since 2016. You can verify the license status at bar.ca.gov.
JJ's Auto Service 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 (562) 803-3030 for a quote.
JJ's Auto Service does not take online bookings here, but walk-ins are welcome. Call (562) 803-3030 to check the wait.
Staff at JJ's Auto Service 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.
BAR field office: South El Monte • Licensed since 2016