Fast , Friendly & Affordable !

Clean Air Smog

September Special $56.75

(plus $8.25 cert)

— The price is only valid for Vehicles 2000 or newer —

Fast, Affordable and No Appointment Needed. Just drive in !

We’re Open 7 Days a Week to Serve You Better –
Click Here to Check Our Hours

Fast , Friendly & Affordable !

Clean Air Smog

September Special $56.75*

(Plus $8.25 cert)

— The price is only valid for Vehicles 2000 or newer —

Fast, Affordable and No Appointment Needed. Just drive in !

We’re Open 7 Days a Week to Serve You Better – Click Here to Check Our Hours

HAPPY CUSTOMERS

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YEARS OF SERVICE

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5 STAR REVIEWS

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Trusted Auto Experts

Certified technicians providing reliable and efficient smog check services for all vehicles.

All Vehicle Types

We test every vehicle — hybrids, diesels, out-of-state registrations, and gross polluters.

15-Minute Turnaround

Quick, efficient service so you can get back on the road without delay.

Open 7 Days a Week

Convenient hours to fit your busy schedule, including weekends.

Fast & Friendly Service

Our expert technicians provide professional, courteous service every time.

Keeping your car Happy, Healthy & Road-Ready

We Service Every Vehicle

Hybrids, diesels, out-of-state, high emitters—plus conventional

In & Out, No Hassle

Smog Check in about 15 minutes

Friendly Pros, Fair Prices

Clear estimates, honest recommendations, and friendly smiles

MONDAY - SATURDAY

9:00 AM – 5:00 PM

SUNDAY

9:00 AM – 2:00 PM

MONDAY - SATURDAY

9:00 AM – 5:00 PM

SUNDAY

9:00 AM – 2:00 PM

Our Core Service

Services We Offer

Clean Air Smog is a family-owned, STAR Certified smog check center proudly serving San Francisco for over 23 years. With more than 300,000 completed inspections, we’ve built a strong reputation for honesty, accuracy, and fast service. Our experienced technicians ensure every vehicle is thoroughly tested to meet California’s strict emission standards.

Voted the #1 smog check station in San Francisco, we’re thankful for our customers’ support and the many five-star reviews we’ve received across top platforms. We look forward to serving you again.

STAR Certified Smog Check Inspection

Required for STAR-directed vehicles.

Out of State Smog Test

For vehicles newly registered in California.

Regular California Smog Check

Standard emissions testing for most vehicles.

Smog Check San Francisco

Local, quick, and reliable emissions testing.

Gross Polluter Certification

For vehicles with excessive emission levels.

Diesel & Hybrid Smog Check

Certified testing for diesel and hybrid vehicles.

Google Reviews & Ratings

    
 
 
      Trustindex verifies that the original source of the review is Google. Rainier gave great customer service
  
  Posted on Google  
 
    
   Justin Best 
 
 
 
 
     Trustindex verifies that the original source of the review is Google. Rainer the man ! Fast service and great customer service
  
  Posted on Google  
 
    
   Fob Marley 
 
 
 
 
     Trustindex verifies that the original source of the review is Google. Great service great price. Been here 3 times now and it’s always a good experience. Highly recommended! Thanks Rainier
  
  Posted on Google  
 
    
   Brian Yee 
 
 
 
 
     Trustindex verifies that the original source of the review is Google. Had a great experience getting my smog certification here. Rainer was very helpful, friendly, and great to chat with while I waited. I went on a Monday morning and was in and out in about 20 minutes. Fast, easy, and pleasant experience — highly recommend!
  
  Posted on Google  
 
    
   Gökhan H. Himmetoğlu 
 
 
 
 
     Trustindex verifies that the original source of the review is Google. Rainier was super helpful!
  
  Posted on Google  
 
    
   Megan Walkenhorst 
 
 
 
 
     Trustindex verifies that the original source of the review is Google. We have been coming here for years always Very helpful . Thank you for your service.
  
  Posted on Google  
 
    
   PATRICIA VIGIL 
 
 
 
 
     Trustindex verifies that the original source of the review is Google. The best!
  
  Posted on Google  
 
    
   linda harrington 
 
 
 
 
     Trustindex verifies that the original source of the review is Google. Highly recommend this place, very good price, very helpful and nice people, quick, for real this place is awesome! They told me how many miles and start up cycles I needed to pass with a permanent code, another place couldn’t give me that info because the OBD reader they had sucked. Another place was trying to charge me almost double the price.. Get your Smog here!!!
  
  Posted on Google  
 
    
   Daniel Johnson

Keeping San Francisco Clean with Reliable Emissions Testing

At Clean Air Smog , we provide quick, dependable, and certified smog checks for all vehicles. Our expert technicians ensure precise testing to keep your car compliant and performing at its best.

Customer Reviews from Yelp

    
 
 
       Posted on Yelp  
   
   Simon F. 
 
 
 
 Verified Great experience at Clean Air Smog.. definitely recommend for any kind of smog check!
  
 
      Posted on Yelp  
   
   Edwin H. 
 
 
 
 Verified Fast, honest and saved me money. Also stress-free and free snacks and beverages. A pleasant experience all-around.
  
 
      Posted on Yelp  
   
   Emily G. 
 
 
 
 Verified Very quick service! Happy with the results and value. He was friendly and courteous. Good value
  
 
      Posted on Yelp  
   
   Dawn 
 
 
 
 Verified Excellent Smog Station STAR services....short wait time....been coming here for years! These guys are the BEST!!
  
 
      Posted on Yelp  
   
   Judy D. 
 
 
 
 Verified We felt lucky! In and out in less than 15 minutes. The waiting area had tea and coffee, pastries, and chips too! Our service tech was super friendly. Super easy to find and pull in to park. Found a coupon online so it was a good deal as well. Definitely will come back
  
 
      Posted on Yelp  
   
   Jai R. 
 
 
 
 Verified First smog test for my 7 year-old Nissan so I don't know what to expect when I drove my car in. Arrived there few minutes past 4 pm on a weekend, I was out of there in half an hour. There is 1 customer before me but there seems to be 2 stations and 2 staff so Enrique was able to get the test started right away while I wait in their retro waiting area with free coffee and tea. It sets you back less than 100 at the end of the test. They send you home with a paper copy of the smog test. Enrique was helpful and friendly, with a wicked sense of humor though.

Get in Touch

Have a question or need directions? Send us a message — we’ll get back to you soon!

clean Air Smog

Fast , Friendly & Affordable !

Clean Air Smog

Star Certified Smog Check

September Special $56.75

Fast , Friendly & Affordable !

Clean Air Smog

Star Certified Smog Check