My 2015 Nissan Rogue was due for its Smog Check. My check engine light was on when I brought it in. I had the light checked at auto supply store and they said that the oxygen sensor was bad. Arthur looked at the printout paperwork and said that that may not be the problem. He popped the hood and he found the problem within less than a minute. One of the hoses was not connected to the engine and reconnected it. After another diagnostic check found that there may another issue but suggest that I drive a few miles to reset the emissions computer. After I drove the recommended miles I had the car smog check and it passed. I've brought in a number of cars we've had to Arthur. He is very honest, friendly and knowledgeable. I highly recommend anyone to bring their vehicle to this establishment. Definitely 5 stars. read more

I can't stress enough how amazing Arturo is at Walnut Smog & Repair. Always so thoughtful and honest, having car issues can be so stressful but the moment I drop off my car I know I'm in good hands. If you are looking for a skilled mechanic with integrity who always communicates your options on top of a speedy turn around with your vehicle, look no further. read more

Artur is a TERRIFIC man! Saved me a ton of money today when I took my '89 Volvo in for a pre-registration smog check. My mechanic had recommended this shop a long time ago, when my car hadn't passed at another facility. Guess what? You're out that money, whether or not your car passes! Art is car-knowledgeable, his service is speedy, and he is a good and honest person. I refuse to go anywhere else, when California makes me jump thru these hoops! Walnut Smog has a huge corner lot and lots of parking. You and your automobile will be in great hands. Thank you, Artur. You're the BEST! read more

Went to Smog check, the car didn't pass, paid $60 + $2.40 credit card fees. Went back after I fixed the car I told him how much it will cost and he said $60, after he finished, he charged me $70.98 and when I asked why he said for the it's for the smog certificate and and then he told me it's 4% charge and then he told me it's a 2% charge!!!! I never heard about the certificate submission to the market check with cost money, and he didn't tell me before although I asked him how much it will cost and he said $60, on top of that he has the price list on the wall without mentioning that the smog certificate will cost. It's not the first time I do smog check and I never had anyone ask for extra money for anything. The price list that they have is what they charge for. Never back to this place again. It's a rip off. read more

Needed a smog check that day. Got in. Got out. Entire process was super smooth and professional. Not sure what else there is to say :) read more

The check engine light with my car was going on and off. So, I went to my mechanic to have it repaired. He referred me to his Smog Guy-Arthur, of Walnut Smog and Repair. Arthur explained he would perform a diagnostic test and let me know the problem. A few hours later Arthur called and told me his diagnosis. I had him perform the service on my car. Arthur was able to repair my car as promised. Arthur was helpful, professional, and trustworthy. I recommend Walnut Smog and Repair. read more

I been taking my car, my moms car, my sister car to Arthur for the last 15 years. Arthur is profesional, courteous and reliable. I just took my 13 year old VW Jetta and he was as profesional as ever. Thank you Arthur for your honesty read more

I have been coming here for years... The place is very clean, professional & very friendly...With 100's of Smog places in Pasadena... You can not go wrong with Walnut Smog read more

Arthur deserves every single star! He was kind enough to take us just 10 min before he was closing (more than appreciated since we had rushed from work). He was knowledgeable, efficient and friendly. We will definitely be seeing him on our next smog check! read more

EXCELLENT customer service and attention to details! Arthur acknowledges clients quickly and efficiently. He explains your car needs clearly, problem shoots with customer (while using his own expertise) and clearly has high standards for everyone's time. The WALNUT SMOG & REPAIR shop is clean, organized and cared for, as well as easily-accessed and professional-looking! Definitely will return on my next smog check! read more

Needed my truck smogged asap - Walnut Smog got me in first thing this morning. I passed, was in and out of there in about 20 mins! Awesome customer service. Highly recommend. read more

I have never left a Yelp review before, but nobody deserves a good review more than Arthur. He has been working on my car since I moved to Pasadena 2 years ago and he's always been extremely kind, honest, and reasonable. I have an old car that has needed a lot of work and Arthur is the only reason I have not gone broke. His prices are fair and he does his work quickly and efficiently. As long as he has a shop and I have a car, I will always go to him for any problem. Thank you Arthur and Merry Christmas read more

Went in with a coupon from July 17 and no posted expiration. Manager would not honor it and no good excuses. he quoted a price of %60, when I showed coupon for $29.75, he then offer $50. I declined and drive 60 seconds down the street to One Time Auto Repair and got a quote for $40 and was done in a few minuted. Great little local show and will visit One time again when I need service. I hate shops and stores that refuse to honor their coupons and advertise prices. To many fail at this or try to nickle and dime you with add on fees and such. read more

I took my car in because I needed a piece replaced to pass the smog check. Guy who quoted me quoted me $150-$200 for the piece, not including labor. The piece is only $45, took my car and left. RIP off. read more

5/1/2018 We brought mom's '95 Toyota Camry to Walnut Smog & Repair. The car ran just fine before we brought it in. The owner said it didn't pass. We said we'd take it to our mechanic to fix what it needed to pass. He discouraged us from doing this stating we would have to pay again for a 2nd test. Smog check was $80 + 8.25 for the certificate, $90 to "Diagnose Customer Concern". Repairs: R&R EGR Solenoid $101.81 = part. "Work Requested - Timing Adjustment". Labor fees = $260.00 + 101.81 + 8.19 tax =$370. We did not "request" anything. The car now drives with decreased power and decreased acceleration which is a symptom of a bad or failing EGR Solenoid. This ONLY happened after he did the work to "fix" the car. We went to him to complain... he said, "I did what needed to be done." Threw up his hands and said, "No one has ever complained before." And walked away. DO NOT GO TO THIS SHOP! read more

armando i read your comment, diagnostic for your car was only $30?? they over charged my husband they charged $90! and asking my husband for $500 to fix engine light! they OVER CHARGE customers and what a rip off !!! we went to another place and was not over charge and very happy with the service. people DONT go here at all! they over charge! they will rip you off will sure report these people to (BBB) better Business of bureau. read more

Having an older car with a lot of miles is no fun when the smog check time comes. So many things could go wrong. And you have to trust someone. My experience shows that you can trust WALNUT SMOG&REPAIR and Artur who is in charge there. I used their services two times. The first time I needed the catalytic convertor, pretty expensive repair. It was actually Honda dealer that discovered the problem but recommended Artur and Walnut Smog&Repair as less expensive alternative to the dealer's prices. I think their recommendation should mean a lot. I did that and saved good amount. This year I had a scare when doing unrelated repair in another shop, they told me that I will need very expensive repair to fix the engine light. They quoted $2,400 (yes, two thousand). Well, I went to Artur and he fixed all in one hour for less than $200 (two hundred). read more

What a great place. Arthur is the nicest ever! The service was fast and unlike other places, they didn't try selling anything that I didn't need. Definitely recommend. read more

Great service and great customer service. Been coming here for years and will continue going for a long time A+++

The Smog Check place is the best. I've come here with both my cars now 3 times each. The owner is friendly and fast. Always treats customers like old friends and makes you feel welcome. He has a nice seating area for you to wait inside if you like as well. read more

Walnut Smog & Repair - Office - Smog Check Stations Near Me - Pasadena, California

I could not get my 10 year old car to pass its smog check. It has 105000 miles but is well maintained and in great shape. Both the dealership and another repair place gave me instructions on how to "wake up" the catalytic converter by driving a certain way, but nothing worked. I found Walnut Smog & Repair on Yelp. Every tech was friendly, explained the process. Within 2 hours my car was road worthy again. Arthur and his team deserve every star!!! read more

Arthur at Walnut Smog & Repair is the real deal! I couldn't get my VW Beetle to pass a smog test, because I had purchased a new car stereo. Apparently, when one purchases a replacement stereo (for VW), there is a disconnect between wires; consequently, communication with the computer for a smog check is lost. No communication: no smog certificate. The staff at the place where I purchased the stereo (Mobile Stereo on Colorado in Pasadena) NEVER told me I would have an issue with subsequently passing a smog test. Arthur, however, was able to repair the mis-wiring of the stereo and my car passed the smog test. Walnut Smog & Repair is the best! read more

I found this place on Yelp, and read the reviews! Its no wonder they have 5 stars! Its quick, easy, and the service was professional. If I ever need a smog check again, I will definitely be back! read more

RUN don't walk, this place is a scam! The guy who runs it doesn't smile (creepy!), loves to argue, and didn't tell me until AFTER performing the test, it would be $$ more to re-test (my car failed). Good business would have been telling me upfront (oh, by the way, if you car fails, it will cost $$ for a retest!)! I only went here because there was an online coupon (which ended up being a total waste as I had to pay for the re-test!). Pretty much EVERY smog station I passed on the way home had a sign declaring "FREE RE-TEST!" Yeah, that's the way it SHOULD be! Ugh. Go to one of the non-scam stations :0) read more

Arthur has been doing this for 14 years and I give him 5 stars for getting the job done efficiently (under 15) and professionally. He wanted to make my life easier the minute I pulled in, asking me to go relax while he takes care of everything. He gets the most points for his ethics - we had a price misunderstanding on the phone, and even though I didn't ask, he did not hesitate to give me a discount to apologize for the cross-fire. Regular smog price is the standard $55 btw. I give him the thumbs up. read more

There was no wait when I showed up and the guy was quick and professional. They took my 20% off coupon I had with no hassle and my 2005 Altima passed with no problems. read more

I am so glad I decided to take my car to Arthur! The place I went to before definitely took advantage of my lack of knowledge about car problems so it was wonderful to find a place that genuinely wants to help. Arthur is so personable, too! I highly recommend their shop! read more

First off I want to say that I am a part-time mechanic and I I'm pretty fluent in the art of b*******.. my car did not pass the smog the first time, I had tried to reset my check engine light before getting the smog so it wasn't on when I arrived but it was a problem that I knew of. Right off the bat he gave me the engine codes and I was super surprised to find out that they were the exact same codes that I knew of, he gave me an estimate which was about $300 less than anywhere else. Still giving me the option of having the problem fixed myself or having the problem fixed there either way I could come back and before even doing the smog he would run a Diagnostics to make sure that the problem was fixed and I wouldn't waste or throw away my second opportunity to pass smog. I opted to fix the car myself and returned about a week and a half later. This time I knew the problem was fixed, I had no check engine light, sure enough, when I pulled up first thing he did was connect the Diagnostics and make sure the car was good, before even running the smog :). The car passed smog with no problem. One thing is that every mechanics charges for a Diagnostics a minimum of $30. He not only diagnosed my car twice, he actually gave me the codes also, at no extra charge. I didn't get any run around it was straight to the point. And I got to say most likely one of the cleanest garage's I have ever seen. I would have gave another star but Yelp only allows 5. Thank you guys ! read more

I've been going to this station for the past 10 years. I'm never disappointed. The service is excellent and they take care of their customers. I highly recommend seeing these guys when you need a smog check. read more

I was driving around Walnut avenue and just decided to try this place. I was charged $50 for the smog check + the customary $8 for the certificate. While standing in the repair bay i looked across the street and saw another business with a banner stating $29.95. When I asked the mechanic why that one was that price he told he that they also own the muffler shop and send business over there. He also said "Why don't you go over there and ask them; I've been here 14 years..." I later called back and asked for a quote for another vehicle, this time I was given a price of $45, without even seeing the car. Finally when I asked if anything extra was done to my car that warranted the $50 fee I was told "i have been here 14 years, all places have different rents", not a concise answer. I hope the extra $15-$20 they got out of me will carry them far. My fault for not shopping around. Never again will I go there nor will I send my friends there. read more

walnut smog has been servicing our company vehicles for years.Arthur is honest and provides quality service at reasonable prices.i recommend him to all my friends and family. read more

Fantastic Place... I found them on YELP!! they even took a competitor coupon and extended that discount! I was in and out the door in 20 minutes for a grand total of $40.00. I highly recommend this place. read more

I've been taking my cars here for a number of years. You get great service at a very competitive price. You can tell the owner knows very well exactly what he is doing. You can't go wrong! read more

I needed to get my testing done and found this place online. Only to realize that when I bought my car this was the place that did the initial smog. Well he was just as quick and efficient as ever. It was a great experience. I will be back. read more

Art is professional, friendly and fast! I needed a smog certification and returned to Walnut Test Only Station without an appointment. Art remembered that I had patronized his business two years prior. He was able to perform the check immediately and I had my results very quickly. I recommend Walnut Test Only Station and Art whole heartedly. read more

My wife and I don't just shop around. We get professional recommendations, shop around, check the internet and then we investigate personally before we spend a dime. It's hard to keep a classic going sometimes, and my wife's TowneCar is her glad-to-have-it car. So after going to the shop our mechanic recommend for specific smog repairs, that guy suggested his brother's shop for the testing. Oh yeah, I was concerned as any good consumer should be, but I laugh now because the treatment we got and continue to get is first rate and worth every penny. Let's face it...it's a smog check - I don't want to be there all day, so we are in and out in no time and if there is a problem when it is not passing, Authur can generally diagnose and let you know why or fix it on the spot. Now it is an every 2 years tradition that you'll find us there. We are treated like customers and friends, not like were #35. P.S. He does repairs now too, so if you don't have a regular guy - you should now. read more

I took my car in last year to this local Smog Shop. To my surprise they also do repairs which I've actually needed a couple times since then. (My car is over 20yrs old) They're honest and fair and I'm hooked. Wouldn't go anywhere else. Shared my experience with my family and friends. AWESOME people read more