$40 Including Certificate
2000 & Newer


*Most Cars & Light Duty Trucks

$50 Including Certificate
1998 & Newer Diesels


*Most Vehicles

$45 Including Certificate
1996 – 1999


*Most Cars & Light Duty Trucks

$55 Including Certificate
1995 & Older


*Most Cars & Light Duty Trucks


From Our Smog Experts



Ask A Smog Expert.


Need you Motor Home or RV Smogged?

Call For the Best Price In Santa Rosa.

(707) 586-1640


    Super nice team! Kieth and Kelly are very kind. Very helpful too, they helped direct me to a good place to get a small fix on my car to pass.  Did the retest after another shop fixed the leak and we were good!  Quick and affordable!  I will recommend to all!

    My “Jack car” will continue to go a few more miles!!!!!

    S. L. F. – Santa Rosa, CA

    Showed up and was met by the owner… In and out in less that 15 minutes. For 40$ you can’t beat the price or the quality of service! Definitely recommend and I will be back in the future.

    Jorge C. – Santa Rosa, CA

    I took my truck there to get it smogged. It was super fast and easy. I recommend Simple Smog for fast friendly service.

    Wendy A. – Rohnert Park, CA

    I researched and called a few places for an oil change and this shop had the best prices. It took me a bit to find it because it didn’t have a great sign out front and then as I drove up I was a little worried by the casual almost run down look of the place. It made me wonder if the quality would be good. But the people are super nice, they were very fast, and gave me all the paperwork necessary for the DMV. It was great quality. I was so impressed that I recommended this place to a friend who went and had a similarly good experience.

    Xuub X. – Trumbull, CT

    Awesome place!  very nice couple ! I’ve taken three cars here and they have taken such good care of me I will always come back. Down side is they are not star certified YET !

    Hayley H. – Santa Rosa, CA

    We had my husband’s commuter car smogged here today, quick, easy and affordable. Keith and Kelly are very pleasant and professional, a very good experience.

    Jenee F. – Sebastopol, CA
A Simple Smog Station

Keith & Kelly Hoffman


At A Simple Smog Station in Santa Rosa, we believe in providing affordable smog prices with a CA Smog certificate included. With us you get no hidden fees or confusing offers. A Simple Smog Station is dedicated to giving our clients a one price, all inclusive quote. We pride ourselves on our excellent customer service and workmanship. When you choose A Simple Smog Station in Santa Rosa, you are getting the hard work of a locally owned and operated family run business. Give us a call today and claim your free quote and the best price on smog in all of Sonoma County. We look forward to seeing you soon!

(707) 586-1640

Our Location


(707) 586-1640

3534 Santa Rosa Ave.

Santa Rosa CA. 95407

We are located on the West Side of Santa Rosa Ave, When you See the Avenida Auto Sales Sign, turn into the same driveway and drive straight back and pull into our shop.

Free Estimate


Keeping it Simple

(707) 586-1640

(707) 490-9737

Email: simplesmog@yahoo.com

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Smog Information

Presently, smog inspections are required for all motor vehicle with the exception of diesel powered motor vehicles 1997 year model and older and or with a Gross Vehicle Weight (GVWR) of more than 14,000 lbs, electrical, natural gas powered vehicles over 14,000 lbs, motorcycles, trailers, or gasoline powered vehicles 1975 and older.
Vehicles registered in places subject to the biennial smog certification program are required to submit proof of a smog certification every other renewal period. Owners of motor vehicles six or less model years old will pay a yearly smog abatement charge for the first 6 registration years as opposed to being required to provide a biennial smog certification. The registration renewal notice mailed to you by the department will indicate if a smog certification is required. In the event that a smog certification is required and you have not already had a smog inspection, you could possibly still pay off your registration fees to avoid any existing late fees. However, you will not receive your brand new registration or year sticker until the smog information has been acquired by DMV.

NOTE: Upon initial registration, nonresident:

Diesel powered vehicles 1998 model year and newer with a (GVWR) rating of no more than 14,000 lbs, and specially manufactured motor vehicles 1976 or more modern call for smog certification. The 6 or less model years old rule does not apply to these vehicles.
Whenever you transfer a motor vehicle which is 4 or less model years old a smog certification is not required. (Determine the oldest-qualifying year model by subtracting 3 from the current year.) The 4 or less model years old rule will not apply to diesel powered motor vehicles. A smog transfer charge would be obtained from the new owner. When a motor vehicle may be more than four model years old, a seller must provide proof of an up-to-date smog certification apart from when one of the following happens:

The transfer happens between a spouse, domestic partner, family member, child, mother or father, grandparent, or grandchild.
A biennial smog certification was submitted to DMV within ninety days previous to the vehicle transfer date (a vehicle inspection report may be required for evidence of certification).
Smog certifications are good for 90 days from the date of issuance.