Ontario Smog

4.9 (195 reviews)

Smog Check Stations

Open • 9:00 am - 5:00 pm

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Rudy V.

It was a pleasure doing business with Ontario smog. Great service, fast,and courtesy!

Amelea J.

Customer service is great. Only waited 20Mins total which included my smog check and that took 10Mins. If you pay cash, you get a discount. $26.75 + $8.75 for the certificate. $35 in total. The parking lot is super small and there are bollards everywhere that divides the property. Make sure you get there at a decent hour before it becomes a pile-up.

$40 smog check and swift service. I was in and out in 10 minutes!!! Can't get any better than that. The service technician Danny was so polite and approachable as soon as I pulled into the establishment.He even offered tap as a form of payment. Thank you for your help today.

Mimi T.

I just took my 2012 Hyundai Genesis Coupe 2.0T here to get a smog check. Honestly I wish I can give them 10 stars. I totally recommend coming here if you need a STAR certified smog check. Upon arriving I was greeted by a guy (I think his name was Danny). He was very friendly, honest, and super chill. My only regret is I WISH I found this place sooner, it would've saved me some stress and a couple of headaches! It took about 15 minutes to get me out the door. There were a few cars ahead of me so I recommend getting there a bit early, for me personally it was no problem at all and I didn't mind waiting. They have a sitting area with a bench and two chairs that you can sit on while you wait. I live about 25 minutes away from their shop, but I don't mind making the drive. After today's experience this is OFFICIALLY my go to smog place. I'll also recommend my friends and family to go here too. The other guy that helped me out was super cool, funny, and knows what he's talking about. (I'm sorry I forgot to ask for his name, but he did have a couple of tattoos on his arms.) Thank you again! You guys are awesome! :D

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Emmanuel J.

0

3

1

3 months ago

Excellent service was out in like 20 minutes will definitely be back would definitely recommend

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Alma A.

Elite 26

38

69

315

8 months ago

I came here for a smog and honestly had one of the best experiences I've ever had in the years I've had to get one. Daniel was running the whole show by himself (juggling four cars at once) and I still got out in 20 minutes! That man deserves a raise! He was super friendly, efficient, and had me laughing with his Wienerschnitzel hat that said "I wieners." It was $40 out the door, and I came on my husband's recommendation (he's picky about car stuff). Now I'll be recommending them too. Fast, friendly, and fair pricing. read more

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Kris RN H.

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5

0

3 months ago

My parents added a last minute thing to the "daughter to do list" which was getting the smog, and Danny and Tony were able to help me out with that. Thank you guys... so so much. read more

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Raul S.

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6

0

8 months ago

Quick and easy, very reasonably priced. I have got my car smogged twice there and will continue to return.

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Jules H.

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14

6

9 months ago

Friendly service and no price gouging. We called ahead and we're provided information that was accurate upon arrival.

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Jeff H.

Elite 26

2

82

87

2 years ago

If you're in the area and your vehicle needs to be smog checked, please consider Ontario Smog. They're fast, efficient and affordable.

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Guadalupe R.

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11

0

1 year ago

Excellent service!! I was in and out in 20 mins!! Definitely great for a busy person.

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Rudy V.

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7

5

2 years ago

It was a pleasure doing business with Ontario smog. Great service, fast,and courtesy! read more

Ontario Smog - Love your sweater - Smog Check Stations Near Me - Ontario, California

Ontario Smog - #Yahshua is Lord! - Smog Check Stations Near Me - Ontario, California

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Madyln C.

0

119

211

2 years ago

I needed to have my 2017 Nissan smogged. So I came to Yelp and found Ontario Smog. I saw there were many good reviews & so I came in today. It's located on Mountain/Holt north east next to Liberty Bell eatery. When we came today it was very busy, but don't let that turn you away. There was about 3-4 employees and they were quick. The service was fast and employees were nice. Checkout the coupon on their website. It was the best value than any other smog shop. I told my sister, she's coming here when her smog comes up later this year. I definitely recommend. read more

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Amelea J.

Elite 26

57

527

1476

5 years ago

Customer service is great. Only waited 20Mins total which included my smog check and that took 10Mins. If you pay cash, you get a discount. $26.75 + $8.75 for the certificate. $35 in total. The parking lot is super small and there are bollards everywhere that divides the property. Make sure you get there at a decent hour before it becomes a pile-up. read more

Ontario Smog - $35 total when paying cash only. - Smog Check Stations Near Me - Ontario, California

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Breonna G.

1

23

44

1 year ago

$40 smog check and swift service. I was in and out in 10 minutes!!! Can't get any better than that. The service technician Danny was so polite and approachable as soon as I pulled into the establishment.He even offered tap as a form of payment. Thank you for your help today. read more

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Mano E.

52

28

15

1 year ago

Smog check test only. Very fast service, friendly and valuable. In and out in about 20 minutes.

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Pres R.

12

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2 years ago

Very friendly people!! Quick and fast!! Still had time to go to AAA to get my tags! Highly recommended!

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Yesica O.

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8

1

2 years ago

Absolutely loved and will def be going back! Top service and awesome prices! Double-whammy! read more

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Summer T.

Elite 26

93

72

138

4 years ago

Five star service to these men (Manny, Rob and Mike) at this Smog check station. I called ahead and was able to get an awesome deal on Smog test and when I got there the wait was less than 5 mins. The station was easy to find and I was pleasantly greeted upon arrival. I handed over my registration and ID, paid my fee and was able to enjoy the rest of the day. Thank you so much for making this experience stress-free. I highly recommend this location for your next smog test. I saw that they were on Yelp's top favorites for 3 consecutively years and now I see the reasons why. read more

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Tracey T.

Elite 26

4

129

136

3 years ago

Great Customer Service loved it, quick service, nice people, and easy peasy! Thank you for making my day easier and my SMOG COMPLETE!

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Linda M.

0

6

0

1 year ago

Danny was great - very efficient. This was the fastest I've ever experienced. Great price!

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Mimi T.

30

148

119

5 years ago

I just took my 2012 Hyundai Genesis Coupe 2.0T here to get a smog check. Honestly I wish I can give them 10 stars. I totally recommend coming here if you need a STAR certified smog check. Upon arriving I was greeted by a guy (I think his name was Danny). He was very friendly, honest, and super chill. My only regret is I WISH I found this place sooner, it would've saved me some stress and a couple of headaches! It took about 15 minutes to get me out the door. There were a few cars ahead of me so I recommend getting there a bit early, for me personally it was no problem at all and I didn't mind waiting. They have a sitting area with a bench and two chairs that you can sit on while you wait. I live about 25 minutes away from their shop, but I don't mind making the drive. After today's experience this is OFFICIALLY my go to smog place. I'll also recommend my friends and family to go here too. The other guy that helped me out was super cool, funny, and knows what he's talking about. (I'm sorry I forgot to ask for his name, but he did have a couple of tattoos on his arms.) Thank you again! You guys are awesome! :D read more

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Maliyah D.

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77

57

1 year ago

Came here for the first time a few days ago and I will definitely be returning. Great and friendly staff. The whole visit took about 15mins.

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Gary O.

Elite 26

214

420

2408

5 years ago

Quick and efficient. Go to the website for your coupon. This is a Star Certified location and they electronically file your certificate. It's in the system the next morning. Total cost with coupon was $35.00! They have a good fast food restaurant right next door too. I highly recommend this place. read more

Ontario Smog - Look for the flag - Smog Check Stations Near Me - Ontario, California

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Shannon S.

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1

0

2 years ago

Super quick and accommodating . This is my 3rd visit and I never waited longer than 10 minutes for a smog.

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Jenny S.

Elite 26

2234

2995

10355

5 years ago

After visiting some smog check places with horrible customer service, I kept driving and stumbled upon this gem! The staff is super friendly Even though it's further from home, we've been going here the past 2 smog checks, thry are also affordable Highly recommend! read more

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Sylvia H.

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6

0

1 year ago

Very fast, good capable and very pleasant gentleman. Highly recommend! Will come next year and the price was better than most.

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Amy R.

8

117

73

2 years ago

I stopped by a couple of days ago to get a smog check for my Dodge Charger. It was my first visit to the shop since I just recently moved from LA. The service was excellent. I was greeted right away and it didn't take longer than 15-20 minutes for my smog check. I highly recommend Ontario Smog! Ten stars! read more

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Carlos T.

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5

0

2 years ago

Excellent service strongly recommended Ontario smog to anyone who needs a smog check.

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Mrs T.

0

2

0

2 years ago

So grateful for Yelp! This place is the best place I have ever been to get my car smogged. When I pulled up, Danny & Anthony greeted me with smiles & took my car right in. They were respectful, professional & quick. I told them I found them on Yelp & that I was paying cash. They gave me a discount! I highly recommend this place to anyone, especially women (you know how most mechanics treat us), who needs to get a smog cert. This is a small business that I am proud to support & will recommend to all my family & friends. Thanks again, guys!! read more

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Cheryll R.

Elite 26

180

536

2482

6 years ago

Easy and convient. People did have to keep juggling their cars around while waiting for their turn, it wasn't too bad. There were about 5 people ahead of me and was in and out in about an hour. $35 out the door if you get the coupon off their website. read more

Ontario Smog - Coupon on their website. $35 out the door! - Smog Check Stations Near Me - Ontario, California

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Leng G.

57

88

111

3 years ago

I had 2 cars that needed the smog check from a star certified station. I called before coming in to make sure of time and cost. As said, I was in and out in less than 25 minutes. Great service and value. I am able to register my 2 cars in a day. I highly recommend this place. read more

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Randy M.

2

111

1

2 years ago

This is my go to place for my smog checks, so glad they got their star certified back. They were helpful suggesting another spot when they didn't have it. read more

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Camille T.

308

23

39

3 years ago

Awesome service. I believe I was helped by Danny (I hope that's his name). He was incredibly friendly, professional and efficient. I was in and out in no time. Great price and great service. read more

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William L.

69

15

1

4 years ago

These guys are friendly, professional and the prices are great. Had two cars to do this year and it was zip in, zip out and DONE! HIGHLY RECOMMENDED!!! read more

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Cynthia M.

27

28

5

3 years ago

Definitely recommend this place for all your smog check needs. I have taken 2 cars here, my bf his truck and his RV. They are very fast and reliable! Danny is awesome. read more

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Gregory H.

100

44

108

3 years ago

Always have a great experience here, super friendly, very affordable and always reliable. Highly recommended... read more

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Raul M.

Elite 17

56

105

90

4 years ago

Cash price can't be beat. This is my go to for a smog. Even sent my wife here with the kids in the, and although they were busy, she was taken care of quickly without a hassle. Made it easy breezy even w three little ones in the cat. read more

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Vanessa C.

104

54

10

3 years ago

Amazing customer service and quick smog check.. cheaper if you bring cash!!! They seem pretty busy so come early

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Dazzlepink _.

0

23

6

3 years ago

We have been coming to this location to take care of our vehicles smog checks (truck and car). Great service and prices. Recommend this business to anyone looking to smog their vehicle. Check them out! read more

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Rhea M.

0

23

10

2 years ago

Friendly customer service and great price. I was in and out within thirty minutes, even though they had a line.

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Shaq M.

0

2

0

3 years ago

SMOG CHECHK Excellent service veri quick. Reasonable price I would recommend this Shafiq Hasan read more

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Jon L.

52

13

7

3 years ago

I'm a van conversion company and need SMOG checks few times every week. These guys are my go-to for the service and price. Super friendly and fast at their job. Would recommend read more

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Angel G.

0

20

42

4 years ago

Smog tech has outstanding customer service & very honest.I am very happy definitely be coming back for my other 3 vehicles, highly recommend it. read more

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More info about Ontario Smog

152 N Mountain Ave
Ontario, CA 91762
Directions
(840) 400-2283
Call Now
Visit Website
https://ontariosmogcheckcalifornia.com

Payment methods

Does Ontario Smog take credit cards?

Yes, Ontario Smog takes credit cards.

Other Amenities

Does Ontario Smog have free WiFi?

Yes, Ontario Smog has free WiFi.

From the Business

Specialties

Heavy Duty Diesel (2013 and Newer) and Gasoline Cars and Trucks. (Any Year) If you need a smog check, Ontario Smog can take care of it. Chances are you need a smog check if you're renewing the registration of your vehicle (required every other year for vehicles older than 4 years) you're registering the vehicle for the first time in the State of California, you're selling your vehicle, your vehicle is diesel, gas, hybrid, natural gas powered we can Smog it.

History

Established in 2010.

Ontario Smog is your official State of California Licensed to certified Smog Test Only Center. We can inspect and certify nearly all vehicles, including Gross Polluters! Licensed by the Bureau of Automotive Repair (BAR) as a Test-Only Site, we are prohibited from providing any repair services.. A Vehicle Inspection Report (VIR) is provided with the completion of your SMOG CHECK and also transmitted to the DMV for your vehicle records. Once your vehicle passes, our system will automatically transmit your Smog Certificate to the DMV electronically, saving you time! Our goal is to quickly inspect and certify your vehicle while you wait, 15 mins. average time. We have cash promotion for vehicles 2000 and newer for $40 out the door, and if your vehicle doesn't pass NO PASS NO PAY. Come give us a chance to service your vehicles. Have a blessed day.

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Hours

Review Highlights - Ontario Smog

“Robert is great, I've been coming here for the last 6 years and the quality of work is always consistent.”

Mentioned in 20 reviews

Why does Yelp recommend reviews?

Hundreds of millions of reviews are posted on Yelp, and our automated recommendation software works in the background to showcase the reviews that it …

24 reviews that are not currently recommended

The reviews below are not factored into the business's overall star rating.

Terry C.

82

3

0

10 years ago

I have a dozen vehicles, many of which are required to have a smog check test for CA registration purposes every two years. So I consider myself a pretty fair and e good judge of how efficient, friendly and value-oriented a smog check station is. For the last four years I have only used Mike and his crew at Ontario Auto Smog, a Star Certified Test Only center. Their friendly and efficient atmosphere makes handing over cash for a mandated service that nobody wants to pay for a little easier to swallow. My visits have been quick and even when one of my cars failed to pass the first time, Mike suggested what I needed to do before bringing it back for a retest. It took four trips for the monitors to set and each time back, he took a moment to analyze my situation for no charge. The location is ideal if you live in the Ontario/Pomona/Montclair areas. And while there are literally dozens of smog shops around, it helps to build a rapport with a shop that you know you are going to need sooner or later. Great team of experts, great service, great value and comfortable environment. Go see them. read more

Jon E.

0

1

0

2 years ago

This place is an 11/10. Squeezed me in for a smog check on a Saturday when they were about to close in 5 minutes. The guy who helped me, Robert, was friendly, professional, and quick. Completely reasonably priced. Despite my trying, he refused a tip when offered. I would recommend to everyone/anyone. read more

Ana T.

0

1

0

10 years ago

Ofrecen un excelente servicio muy rápido y eficaz. El personal es muy amable. Ofrecen el servicio inglés y español y precios razonables. Definitivamente recomiendo este lugar!! read more

M H.

2

48

17

7 years ago

This place is AWESOME! The guy who works there is AWESOME! Super friendly, super nice and super knowledgeable. In and out within 15 mins! Highly recommend. read more

Alex B.

0

2

0

8 years ago

Amazing service! Not only fast but quality service. Would for sure come back again, as well recommend to family and friends. Keep up the great service! read more

Cody T.

0

1

0

15 days ago

Quick service, polite team, and efficient information regarding car problems and troubleshooting. Would recommend 10/10 Danny is a legend btw read more

Raymond J.

0

1

0

9 years ago

Will definitely be back to Ontario Smog Shop great customer service Mike did a great job very professional can't beat the prices

Brian R.

0

3

0

9 months ago

Fast and inexpensive! Great service! I was in and out in less than 15 minutes - I'm a repeat customer won't go anywhere else. read more

Jason G.

64

223

237

3 years ago

Needed to get a smog check on my truck. I drove by it and They are closed. They need to update there info. Not cool at all.

Jodi E.

0

2

0

10 years ago

Ricardo did the smog on my sons van. He is very friendly and fast. I will be bring my other vehicles here in the future

Rosa A.

0

3

1

2 years ago

Great Place to get your Smog done !! Fast and friendly service was in and out within 25 minutes even with a long line. read more

Rishi N.

1

5

4

3 years ago

The guy with the hat was kinda not good with customer service The way he was talking sounded like he had a rough day read more

Ray ..

0

2

0

11 months ago

Great service. Fast and accurate. Service representative was courteous and patient with answering all questions.

Kevin R.

8

3

0

10 years ago

great shop, awesome prices, very helpful and friendly customer service, 100% would recommend to family and friends

Jimmy H.

33

15

0

8 years ago

Super fast service. The price was great!! Make sure to tell them you find them on Yelp for special price.

Leo M.

4

5

0

10 years ago

Guys here are very helpful,they do it fast too!,great job!,will recommend them to my friends and family!

Robert D.

0

2

1

6 years ago

Great customer service. Wait time was minimal. Information sent directly to DMV. Will be back again.

Erica V.

124

7

0

10 years ago

If you're looking for great customer service this is the place to go to i highly recommend this place.

Todd T.

0

3

2

4 years ago

They were quick and courteous. Got me in and out with my certificate. What more could you ask for?

Vale C.

29

2

0

10 years ago

Ricardo gave me an excellent service absolutely recommend this place to get ur smog to anyone :)

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I was sold on the reviews. All went smoothly for me as well. Went in around 5:15 and only took…read moreabout 15 minutes. I may have been their only client at that time. Great service. Paid $50, not bad at all.

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This place is a well oiled machine. They will get you in n out in a jiffy for a great price ($38)…read more They even throw in a free car wash, voucher good for 30 days. Everyone was really friendly and efficient. If you want a laugh, call and listen to their answering machine lol.

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Y'all... I accidentally found a diamond in the rough…read more I called around 4:30, fully expecting them to tell me they were closing. Instead, this man says, "Come on, I'll wait for you." Not only that, he knew there was construction around the shop and made sure I knew exactly how to find it. That alone told me he actually cares about people, not just getting them in and out. The smog check was DMV certified, fast, and efficient--but not one of those places where they're rushing you out the door like they're late for dinner. He took his time, did the job right, answered my questions, and made me feel comfortable. He has one of those personalities that just feels like you've known him forever. Now listen... if you're on Holt, SLOW DOWN because you'll drive right past it. It's between Campus and Grove, and it's easy to miss if you're flying down the street like you're in the Indy 500. The shop isn't fancy, and it could use a little cleaning and organizing, but don't let appearances fool you. I'd rather have an honest mechanic than a pretty waiting room any day. I haven't used him for repairs yet, but he also does oil changes, brakes, and other mechanical work. Based on how he treated me over a simple smog check, I have a feeling I may have just found the mechanic everyone hopes to have in their back pocket. Good, honest people are hard to come by these days. This is the kind of small business I'd rather support over the big chains. I'll definitely be back. Let not forget the price was right. $56 something. Oh and some brownie points for thinking my old ass was young and my 15 year-old daughter was mine friend (yeah RIGHT!) P.S. Sorry guys I couldn't get my good pictures too busy SNIGGLING and giggling with My Daughter.

Great place for smog checks if you're in need of a quick and affordable place! They also have a…read morecoupon online, so I don't know what it'd be without it. However, there was a small difference, not sure if it's after tax or not. Online there's a coupon for $35, but in person they charged $40 for the coupon. I don't know if there's a fee that was missed or if they just never updated the price for the online coupon, but it's only a $5 difference, so nothing I'd make too big a deal over. The whole process took about 30-45 minutes. Be aware, there's no place to sit or shade while you wait, so plan accordingly. Since there was another customer in front of me, I had to wait for them to finish first and was hiding behind a truck's shade. Once it got to my turn, it was pretty quick. They also do take card.

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4.8

(811 reviews)

Found this place on Yelp. I was guaranteed the Yelp discount. There was absolutely no trick on…read morethe pricing. I came on a Tuesday late morning. It wasnt too busy. The whole smog test process took about 15 min. The service was great. Every bit of professionalism was witnessed. Will definitely return in 2 years!

I came in and I was greeted with a smile. it didn't take long. I got my registration and my smog…read moreand tags all at one time.. super convenient and helpful. Thank you The place was clean and everyone was friendly

Mena Smog Check

4.9

(456 reviews)

Super fast and friendly. Drive in and stay in your car and he just does the quick smog check and…read moretells you prices upfront. It's a nice little car wash and car service plaza. Thanks for the great job

This was truly a remarkable Smog Check experience. I had paid the registration fee for my…read moredaughter's truck, and totally forgot about the smog check! Needing to remedy this quickly, I took to Yelp and found Mena Smog Check. Love that it's located so close to my home, as in the past I've driven further than necessary. I arrived about 5 minutes prior to opening and was the first one there. He opened up early and took me in right away. I didn't have to get out of the truck at all. He explained everything to me and told me how long it would take. Everything passed and I was out of there in about 20 minutes total. He was also kind enough to give me a printed copy to keep with the truck so in case the sticker doesn't get here in time, we can show that everything is taken care of in the meantime. The nicest guy! Hope this place continues to do well!

Avid Smog

5.0

(2 reviews)

Fernando is the Owner, I called him and drove right in, Fernando is someone you can trust, he's…read morefast and my car was completed in a few minutes, Fernando is someone I trust and after speaking with him he's very knowledgeable. Thank you Fernando and it was a great meeting you.

Had a wonderful experience, was in-an-out in 15 minutes. Will be back with my other cars when smog…read moretest is needed.

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Ontario Smog - smog_check_stations - Updated October 2026

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Recommended Reviews - Ontario Smog

Reviews With Photos

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24 Ontario Smog reviews that are not currently recommended

Why does Yelp recommend reviews?

24 reviews that are not currently recommended

Ontario Smog - smog_check_stations - Updated October 2026

Browse Nearby

Browse Brands

Related Cost Guides

Related Searches in Ontario, CA

Service Offerings Nearby

People found Ontario Smog by searching for…

Trending Searches in Ontario, CA

Browse Articles

People who viewed Ontario Smog also viewed

Montclair Smog Check Center

Manny's Smog

Sam's Smog

Ontario Smog Check

Smog N Save

Upland Smog Center

DNV Smog & Test Only

US Smog Check

Mena Smog Check

Avid Smog