Price
Call for price
Hours
Open Mon–Sat
Station type
Test & Repair
Appointments
Walk-ins welcome
Hours
- Monday
- 8 AM – 5:30 PM
- Tuesday
- 8 AM – 5:30 PM
- Wednesday
- 8 AM – 5:30 PM
- Thursday
- 8 AM – 5:30 PM
- Friday
- 8 AM – 5:30 PM
- Saturday
- 8 AM – 3:30 PM
- Sunday
- Closed
Good to know
Languages
English
Payment
Cash, Credit Card
What to expect at Promax Auto Service
Promax Auto Service is licensed by the Bureau of Automotive Repair as a Test & Repair smog station in Lake Forest, 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?
- Promax 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.
20742 Lake Forest Dr #c2, Lake Forest, CA 92630
Get directions →Hours
- Monday
- 8 AM – 5:30 PM
- Tuesday
- 8 AM – 5:30 PM
- Wednesday
- 8 AM – 5:30 PM
- Thursday
- 8 AM – 5:30 PM
- Friday
- 8 AM – 5:30 PM
- Saturday
- 8 AM – 3:30 PM
- Sunday
- Closed
Also listed on
Other stations near Promax Auto Service
Purrfect Auto Service #17
20732 Lake Forest Dr suit b1
Us Smog
20732 Lake Forest Dr # B4
Auto Mechanic Services
20622 Pascal Way #d
Mission Auto Center
20761 Lake Forest Dr # K
L&M Automotive Service Center
20622 Pascal Way Unit A
Nearby cities in Orange County
Questions about Promax Auto Service
Promax Auto Service is open Monday 8 AM to 5:30 PM; Tuesday 8 AM to 5:30 PM; Wednesday 8 AM to 5:30 PM; Thursday 8 AM to 5:30 PM; Friday 8 AM to 5:30 PM; Saturday 8 AM to 3:30 PM. Closed Sunday. Hours can change on holidays, so call ahead if you are cutting it close.
Promax Auto Service accepts Cash, Credit Card.
Promax Auto Service has held a BAR smog license since 2002. You can verify the license status at bar.ca.gov.
Promax 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 (949) 597-1999 for a quote.
Promax Auto Service does not take online bookings here, but walk-ins are welcome. Call (949) 597-1999 to check the wait.
Staff at Promax Auto Service speak English.
The closest alternatives in Lake Forest are Purrfect Auto Service #17 and Us Smog. 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: San Diego • Licensed since 2002