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Smog Tests &
CARB Clean Truck 

emissions tests in glendora

We do smog testing for non-STAR gas/hybrid vehicles (2000+), diesel vehicles (1998+)
and CARB Clean Truck Testing, including OBD II, Smoke opacity and visual inspections.

Convenient, stress- free smog testing in Glendora, CA

​We offer smog testing for non- star gas (2000+), hybrid (2000+), and diesel vehicles (1998+) to ensure compliance with California regulations.​ We have comfy chairs and cold drinks for you to enjoy while your vehicle is tested.  Relax and unwind during your fast and easy smog check!

CARB Clean Truck Testing – On-Site or Mobile

We offer official CARB Clean Truck Check emissions testing for trucks, RVs, and fleets—available on-site at our Glendora location or mobile at your yard. We test all year models and provide every CARB-certified service, including OBD II testing, smoke opacity, and visual inspections. Same-day walk-ins and mobile appointments are usually available.

Smog Testing on Your Schedule

Walk-ins are always welcome, or book ahead for extra convenience. Need a time outside of regular hours? Just ask—we’ll do our best to make it work. Whether you’re in a rush or planning ahead, we’ve got you covered.

Fast, Comfortable Uber & Lyft Inspections – Walk In or Book Ahead

Need a quick and easy rideshare inspection? We’ve got you. We offer official Uber and Lyft vehicle inspections with fast service, minimal wait times, and a clean, comfortable waiting area. Walk in anytime or book online—most inspections take 15 minutes or less. Same-day appointments available.

Stay Compliant, Drive confidently

Schedule your smog testing appointment today to ensure compliance with California emissions standards

Comprehensive Emissions testing

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Smog testing for non-star vehicles

We offer smog testing for gas (2000+), hybrid (2000+), and diesel vehicles (1998+) to ensure compliance with California regulations.

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CARB clean truck testing compliance

Convenient on-site or mobile testing available for CARB Clean Truck testing made to fit your schedule. We CARB Clean Truck Test any model year vehicle and can provide any CARB-required test service. We are a one stop shop!

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Carb clean truck smoke opacity testing

As part of our commitment to clean air, we provide CARB Clean Truck smoke opacity testing either on-site or mobile.

Ready to get started?

Contact us now to book your appointment and ensure your vehicle is emission compliant

5.0
Based on 34 reviews
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Miriam L.
21:48 08 Aug 25
I am so happy to find this smog check center. The technician is so friendly and professional! Also it only takes me 15 minutes to wait.
hawk T.
21:00 21 Jul 25
Been to a lot of smog places, this by FAR is the best I’ve been too. Really thought out for customer experience. Really nice owners. Don’t hesitate to come here. You have a fan for life.
Gena R
00:08 02 Jul 25
I’m so glad I came across this female-owned business! They truly go the extra mile to make sure you’re comfortable—offering chairs, water, and shade while you wait. The service was quick, efficient, and genuinely friendly. As a fun bonus, she even added bling to my valve stems! I definitely recommend Darling Smog!
Tim C.
20:29 30 May 25
Wonderfully friendly and helpful. They go the extra mile to make sure you’re taken care of efficiently and quickly. Will be back when I next need a smog!
Carlos G
22:39 16 May 25
The owner, Nikki, is amazing. Very outgoing and friendly right from the get-go. She had me in and out with no problems and she answered any question I had as she went through it. Fair price and quick service. I will definitely be recommending her to my friends and coming back to her the next time I need a smog check. Thank you so much Nikki.
Kai B
01:15 15 May 25
Definitely recommend this shop! The service was excellent and they even checked my tire pressure and filled up my wiper fluid. Was able to get in and out pretty quick and got to sit in the shade while they worked. Thank you darling smog!!
Tony N.
23:43 30 Apr 25
Had a great experience here! The person helping me was super nice, professional, and made the whole smog check quick and easy. Highly recommend if you want fast and friendly service from someone who knows what they’re doing!
Leila A.
00:11 25 Mar 25
5 stars ! I called and got an appointment same day to complete my smog check. Sean was very nice and helpful. He offered water and a cozy spot to sit and wait with my dog. I even got new rhinestone valves. I recommend and will come back !
Glenda H.
17:51 23 Mar 25
Called for a smog, was scheduled same day. Sean was very professional and friendly. The shop is clean, had seating available. The smog was quick and also checked my tires. I have already recommended this place to my family and friends.
Jacob R.
21:04 12 Mar 25
Came in without a reservation for a smog check and serviced very quickly. In and out in no time. Sean, the owners father helped us out, he was very friendly and filled up our tires and topped off our windshield wiper fluid for no extra cost. Extremely friendly and cozy environment well decorated.
Diane
18:44 01 Feb 25
I was referred to Darling Smog & am very pleased with the service! Nikki & her dad were so great and I was in/out in no time! I highly recommend for your local go-to Smog service! A++
Did you know that rats can climb up into your engine & leave their food scraps? We'll, I didn't until they found snail shells in my motor! Lol - Gave me great tips to keep the rats at bay! You want to know? Guess you need to visit Darling Smog!
Dee S
16:28 27 Jan 25
Great place to get a smog check! Quick, friendly and reasonable price! I’d definitely recommend!
Rena E.
18:56 10 Jan 25
Friendly shop, Nikki was very helpful and informative. Very quick service, highly recommend!
James L.
02:35 19 Dec 24
Great smog check shop! Loved the Corvette on the lift, comfy waiting area, and friendly service. They gave helpful advice on my brakes and a sound I mentioned. Fast and efficient—highly recommend!
Vanessa Lopez V.
23:04 04 Nov 24
Called the shop to see availability for the day, they were able to get my smog done in 20 minutes. Offered me water and had seating available. Super easy and super fast. Love it, will definitely be coming back for future smog checks.
Jennifer P.
23:45 28 Oct 24
Had a great experience taking my car to Darling Smog this morning. Nikki and her team were welcoming and professional. There was a comfortable place to wait and the whole process took less than 20 minutes. Would highly recommend!
David
23:47 24 Oct 24
I have been taking my wife’s car here for a smog test for the past 4 years. I was pleasantly surprised to see it had changed to a new owner. She was very pleasant and friendly.
As I pulled my car into the open garage, I can see how clean and organized the shop was. She offered me a bottle of cold water and I sat in one of her cushy sofa chairs nicely arranged in her shop. She said it would take around 10 minutes to complete the test.
Approximately 10 minutes later she had the results and explained the whole process of the filing of the smog test and completing the vehicle registration renewal notice.

Darling is so friendly and personable. She made the whole process so easy. It is nice to take care of this vehicle registration requirement with NO STRESS. I will recommend Darling Smog to my family and friends.
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