Santa Rosa's Top Smog Inspection Station
Tristar Automotive is a licensed California Smog Check Station serving Santa Rosa and Sonoma County.
Why Choose Tristar Automotive for Smog Checks?
As a certified California Bureau of Automotive Repair (BAR) station, we perform accurate emissions testing to help you meet state requirements. With over 30 years serving Santa Rosa and the North Bay, our ASE-certified technicians provide reliable inspections that protect both your vehicle and the environment.
Smog Inspections
We conduct thorough emissions testing on gasoline, diesel, and hybrid vehicles. Our inspections follow California guidelines to ensure compliance and registration renewal. Drivers in Santa Rosa and Sonoma County trusts Tristar Automotive for accurate results with minimal wait times.
Emission System Diagnostics
If your vehicle fails its smog test, our team can perform diagnostics to identify issues with the catalytic converter, oxygen sensors, or exhaust system. We provide transparent repair recommendations to help you pass retesting and stay road legal in California.
Repair & Retest Services
Our technicians not only perform emissions testing but also carry out the necessary repairs to ensure your vehicle passes. With deep knowledge of state requirements, we make the process seamless for drivers across Santa Rosa and the North Bay.
- We can perform Test-Only smog checks.
- We are a full-service automotive repair shop in Santa Rosa.
- Trustworthy. We are AAA approved.
- Knowledge. Our technicians are ASE Certified.
- Established. Providing smog checks in Sonoma County since 1991.
4.9verified by TrustindexTrustindex verifies that the company has a review score above 4.5, based on reviews collected on Google over the past 12 months, qualifying it to receive the Top Rated Certificate.
More Auto Repair Services
Be sure to read more about how our Factory Scheduled Maintenance services can save you money. And, be sure to view our complete line-up of Automotive Repair and Services available at Tristar Automotive in Santa Rosa, CA!
Why Drivers Trust Us as a Certified Smog Check Station
Licensed by the California Bureau of Automotive Repair, recognized by the Better Business Bureau, and trusted in Sonoma County for over three decades, we’re a reliable choice for emissions compliance.
Posted on Google![]()
craig alness4 October 2026Trustindex verifies that the original source of the review is Google.
Great service, quality work, reasonable prices. I bring my grandma's 1972 Chevelle in every year and trust this team to take good care of this very special car.Posted on Google![]()
K Beau29 September 2026Trustindex verifies that the original source of the review is Google.
Wonderful experience all the way around. Did a diagnostic on my older Lexus and provided a detailed report of all its foibles and best way to proceed. From initial phone call to picking up car after, truly an exceptional experience. Thank you!!Posted on Google![]()
Michael Voight27 September 2026Trustindex verifies that the original source of the review is Google.
Easy to tow in car. Called me and asked what the issue seemed to be and fixed the problem. They pushed an oil change and air filter change but was quite a bit overpriced. Over $300 for both. I understand they need to make money but be wary of that. Otherwise they did good and fast work.Posted on Google![]()
Pat Pointer18 September 2026Trustindex verifies that the original source of the review is Google.
Had a great experience and felt well informed about my F-150 EcoBoost repair options for a coolant leak that caused the engine to overheat. I wasn’t feeling my best while facing the consequences of my truck requiring major repairs. The detailed estimate broke down every cost, from clips and hoses to labor, so there were no surprises. My questions were welcomed, and they took the time to explain what to expect. The staff and management were friendly, knowledgeable, and genuinely helpful. I especially appreciated the straightforward, low-pressure approach compared with some of my past dealership experiences. Highly recommend!Posted on Google![]()
shannon stegner11 September 2026Trustindex verifies that the original source of the review is Google.
I had to tow my vehicle into Tristar at 4pm the Friday before a holiday weekend. I was stranded in the side of the road and didn’t know who to call so, after a brief google search, I called Tristar. They let me know I’d could have my car towed over and it could stay over the long weekend but that they’d get back to me with an update as quickly as possible upon return from the holiday. As promised they did get back to me and let me know that the situation with my car was something that was actually covered by the maker of my vehicle via a class action lawsuit / extended warranty fix (my car is 1.5 yrs out of manufacture warranty). They told me to go ahead and make an appt with a local dealership and let me know exactly what to ask for re: this extended warranty. Additionally, they didn’t charge me for the diagnostic time it took them to identify the situation. I’m incredibly appreciative of their responsiveness and honesty in a moment that was very unexpected and stressful. They absolutely have my business from here out!Posted on Google![]()
Harold Duncan29 August 2026Trustindex verifies that the original source of the review is Google.
Very efficient and professional work…Staff is very kind and friendly as well…l had a Smog check…Posted on Google![]()
James Fitzgerald22 August 2026Trustindex verifies that the original source of the review is Google.
Great service and communication, thank you Team TriStar! Reliable and always stand behind their work and dedication, delivered with kindness and customer satisfaction!Posted on Google![]()
julie berman19 August 2026Trustindex verifies that the original source of the review is Google.
Left the dealership where I purchased my car and became a new customer of TriStar. They could not have been nicer, and their fees were very reasonable. Color me very pleased with my overall experience.Posted on Google![]()
H P Mechanical14 August 2026Trustindex verifies that the original source of the review is Google.
We have used tri star for many years, for service for our service fleet. We have found them to be honest, fair, efficient and they always keep you in the loop of your repair.Posted on Google![]()
Mark Jones29 July 2026Trustindex verifies that the original source of the review is Google.
There good and fast!Posted on Google![]()
Stephen Riedel28 July 2026Trustindex verifies that the original source of the review is Google.
I have had a couple recent repairs here including the catalytic converter and brake booster on my ‘98 Tacoma. I’ve been impressed by how responsive, timely, knowledgeable and professional the shop owners are! Thank you for all the high quality work you guys have done! It is much appreciated even though the issues have been unanticipated. It’s been a pricey last six months for me with all the vehicle repairs, but I’m trying to keep it running well for at least another 100K miles. 👍🏻 I hope I don’t have to come in anytime soon… :)Posted on Google![]()
MaryLou Herrera26 July 2026Trustindex verifies that the original source of the review is Google.
I received good service. I felt comfortable and confident with the service I received.Posted on Google![]()
Diane Castro15 July 2026Trustindex verifies that the original source of the review is Google.
My first experience was great! Ken was professional and fast. I needed a new catalytic converter in my 2014 Kia so it could pass the smog test - Ken was communicative and friendly. I love that they have a company Uber account so I could be taken home after I dropped my car off.Posted on Google![]()
Chip Smith11 July 2026Trustindex verifies that the original source of the review is Google.
Ken & Zac got me in quickly, diagnosed my issues, and got me back on the road tootsweet - pardon my french. (They even laughed at my corny jokes! Thanks, guys...😇) My problem turned out to be much less serious than I thought, and they were in contact with me the through the entire process. AND they got me a rideshare to and from! If you want a shop with friendly, reliable folks, you won't go wrong with TriStar!Posted on Google![]()
William Keim9 July 2026Trustindex verifies that the original source of the review is Google.
TriStar Automotive began with an oil change. Most recently I received more service to my car. It needed the attention and TriStar Automotive provided exceptional service. I would highly recommend TriStar to anyone looking for quality, honesty, and integrity.Posted on Yelp![]()
Theresa M.6 July 2026Verified
I needed to have my Exotic car's DMV exhaust certification renewed. The car is an 1988. I have quite a bit of angst when every two years the certification has to be renewed. I took the car to TRISTAR. They were WONDERFUL!! They felt my concern. The car passed with flying colors, twice at this time! The people who own/work at Tristar are master mechanics! They were kind enough to give me a referral for an excellent Exotic car repair shop. Since moving to Sonoma County eight years ago I have been in convulsions on where to take my car for engine repairs. Tristar's recommendation was another star on their rating. They should receive 10 stars!!!
Certified Smog Check in Santa Rosa & Sonoma County
Tristar Automotive delivers accurate smog inspections and repairs backed by BAR licensing and ASE-certified expertise.
For a Certified Smog Check in Santa Rosa Today
Call (707) 571-8866
Increase the longevity of your vehicle with routine maintenance
Smog Checks – What to Expect
During a smog check at Tristar Automotive in Santa Rosa, a certified technician will attach diagnostic equipment to your vehicle to measure emissions output. This data is transmitted to the Bureau of Automotive Repair (BAR). The results of the smog check are referred to as Vehicle Inspection Report or VIR. If your vehicle passes the smog test, the BAR will transmit the Certificate directly to the Department of Motor Vehicles (DMV).
A smog check at Tristar Automotive, means you won’t have to worry about being referred out for repairs – we are a Certified Smog Check station. This means we have worked diligently to maintain an impeccable record with the State of California and have met rigid requirements, which allows us to perform any necessary repairs to your vehicle in our full-service automotive repair shop.
When you arrive at Tristar Automotive in Santa Rosa for your smog inspection, you won’t be treated like a widget in a production line. Instead, you will be greeted by friendly professionals that genuinely care about your automotive needs. An ASE Certified technician will assess your smog check requirements, perform your smog check and have you out the door in a timely manner!
If your vehicle is not capable of meeting smog test standards, the technician will be able to determine which component(s) are in need of repair or replacement. If you meet certain income eligibility requirements, you may choose to utilize the Consumer Assistance Program (CAP) and receive up to $500 toward the cost of emission-related repairs. For additional details, please see our Smog Inspection FAQ page.
Smog checks are not required under certain circumstances (e.g. depending upon the age of your vehicle, type and physical location, etc.). Is your vehicle smog exempt? Refer to the Vehicle Exemptions pdf chart at the BAR website.
Our Customer Reviews
These are just a few reviews from our valued car service & repair customers throughout Sonoma County.
Posted on Google![]()
craig alness4 October 2026
Great service, quality work, reasonable prices. I bring my grandma's 1972 Chevelle in every year and trust this team to take good care of this very special car.Posted on Google![]()
K Beau29 September 2026
Wonderful experience all the way around. Did a diagnostic on my older Lexus and provided a detailed report of all its foibles and best way to proceed. From initial phone call to picking up car after, truly an exceptional experience. Thank you!!Posted on Google![]()
Michael Voight27 September 2026
Easy to tow in car. Called me and asked what the issue seemed to be and fixed the problem. They pushed an oil change and air filter change but was quite a bit overpriced. Over $300 for both. I understand they need to make money but be wary of that. Otherwise they did good and fast work.Posted on Google![]()
Pat Pointer18 September 2026
Had a great experience and felt well informed about my F-150 EcoBoost repair options for a coolant leak that caused the engine to overheat. I wasn’t feeling my best while facing the consequences of my truck requiring major repairs. The detailed estimate broke down every cost, from clips and hoses to labor, so there were no surprises. My questions were welcomed, and they took the time to explain what to expect. The staff and management were friendly, knowledgeable, and genuinely helpful. I especially appreciated the straightforward, low-pressure approach compared with some of my past dealership experiences. Highly recommend!Posted on Google![]()
shannon stegner11 September 2026
I had to tow my vehicle into Tristar at 4pm the Friday before a holiday weekend. I was stranded in the side of the road and didn’t know who to call so, after a brief google search, I called Tristar. They let me know I’d could have my car towed over and it could stay over the long weekend but that they’d get back to me with an update as quickly as possible upon return from the holiday. As promised they did get back to me and let me know that the situation with my car was something that was actually covered by the maker of my vehicle via a class action lawsuit / extended warranty fix (my car is 1.5 yrs out of manufacture warranty). They told me to go ahead and make an appt with a local dealership and let me know exactly what to ask for re: this extended warranty. Additionally, they didn’t charge me for the diagnostic time it took them to identify the situation. I’m incredibly appreciative of their responsiveness and honesty in a moment that was very unexpected and stressful. They absolutely have my business from here out!Posted on Google![]()
Harold Duncan29 August 2026
Very efficient and professional work…Staff is very kind and friendly as well…l had a Smog check…Posted on Google![]()
James Fitzgerald22 August 2026
Great service and communication, thank you Team TriStar! Reliable and always stand behind their work and dedication, delivered with kindness and customer satisfaction!Posted on Google![]()
julie berman19 August 2026
Left the dealership where I purchased my car and became a new customer of TriStar. They could not have been nicer, and their fees were very reasonable. Color me very pleased with my overall experience.Posted on Google![]()
H P Mechanical14 August 2026
We have used tri star for many years, for service for our service fleet. We have found them to be honest, fair, efficient and they always keep you in the loop of your repair.Posted on Google![]()
Mark Jones29 July 2026
There good and fast!Posted on Google![]()
Stephen Riedel28 July 2026
I have had a couple recent repairs here including the catalytic converter and brake booster on my ‘98 Tacoma. I’ve been impressed by how responsive, timely, knowledgeable and professional the shop owners are! Thank you for all the high quality work you guys have done! It is much appreciated even though the issues have been unanticipated. It’s been a pricey last six months for me with all the vehicle repairs, but I’m trying to keep it running well for at least another 100K miles. 👍🏻 I hope I don’t have to come in anytime soon… :)Posted on Google![]()
MaryLou Herrera26 July 2026
I received good service. I felt comfortable and confident with the service I received.