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
- 9 AM – 2 PM
- Sunday
- Closed
Good to know
Languages
English
Payment
Cash, Credit Card
What to expect at M & N Smog And Muffler
M & N Smog And Muffler is licensed by the Bureau of Automotive Repair as a Test & Repair smog station in Riverside, 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?
- M & N Smog And Muffler 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.
2512 University Ave., Riverside, CA 92507
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
- 9 AM – 2 PM
- Sunday
- Closed
Also listed on
Other stations near M & N Smog And Muffler
Automotive Raceway Smog
2291 University Ave #a
EZ Auto Smog
2748 14th Street
L P Z Auto Repair
2692 Main Street
Riverside Smog Pros
6011 Magnolia Avenue
Bobs Auto Service
3823 Jurupa Ave
Nearby cities in Riverside County
Questions about M & N Smog And Muffler
M & N Smog And Muffler 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 9 AM to 2 PM. Closed Sunday. Hours can change on holidays, so call ahead if you are cutting it close.
M & N Smog And Muffler accepts Cash, Credit Card.
M & N Smog And Muffler has held a BAR smog license since 2012. You can verify the license status at bar.ca.gov.
M & N Smog And Muffler 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 (951) 787-0782 for a quote.
M & N Smog And Muffler does not take online bookings here, but walk-ins are welcome. Call (951) 787-0782 to check the wait.
Staff at M & N Smog And Muffler speak English.
The closest alternatives in Riverside are Automotive Raceway Smog (0.1 mi) and EZ Auto Smog (0.4 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: Riverside • Licensed since 2012