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Santa Rosa's Top Engine Rebuilding Service

Tristar Automotive provides expert engine diagnostics, servicing, and replacements to vehicle owners across Santa Rosa and Sonoma County.

Why Choose Us for Engine Work?

Our ASE-certified technicians offer everything from diagnostics to Jasper remanufactured engines under a 3yr/100k-mile warranty. We are a BAR licensed facility and are trusted across the North Bay for engine service that meets high manufacturer standards.

Engine Diagnostics & Performance Tuning

Tristar Automotive identifies issues like misfires, low compression, or sensor failures using advanced diagnostic tools. Clear reporting and repair recommendations help owners in Santa Rosa and Sonoma County understand what’s needed to restore peak performance while avoiding unnecessary expense.

Engine Repairs & Reconditioning

From gasket replacements to rebuilding, we repair components to OEM standards. This extends engine longevity and prevents future damage. Whether you’ve got a daily commuter or classic vehicle, our repairs keep drivers across the North Bay road-ready.

Complete Engine Replacement

We install Jasper remanufactured engines that meet OEM specifications and include transferable warranty coverage. This turns major engine failure into a long-term investment, offering peace of mind and reliable performance across Sonoma County.

Trust JASPER Remanufactured

3 Year/100,000 Mile Nationwide Warranty!

Learn more at Jasper Engines or contact Tristar Automotive today!

Google star 1Google star 2Google star 3Google star 4Google star 5
4.9
verified by Trustindex
Trustindex 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 Automotive 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 Santa Rosa Drivers Rely on Us for Engine Service

ASE certification, award-winning customer service, and BAR licensing make Tristar Automotive the trusted choice for engine diagnostics and replacements in the North Bay.

Posted on Google Google
Robert-Connie Mullan profile picture
Robert-Connie Mullan
15 October 2026
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
needed a certificate for DMV. Charged shop rate for three hours for service I suspect took mich less time.
Posted on Google Google
craig alness profile picture
craig alness
4 October 2026
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex 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 Google
K Beau profile picture
K Beau
29 September 2026
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex 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 Google
Michael Voight profile picture
Michael Voight
27 September 2026
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex 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 Google
Pat Pointer profile picture
Pat Pointer
18 September 2026
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex 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 Google
shannon stegner profile picture
shannon stegner
11 September 2026
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex 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 Google
Harold Duncan profile picture
Harold Duncan
29 August 2026
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex 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 Google
James Fitzgerald profile picture
James Fitzgerald
22 August 2026
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex 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 Google
julie berman profile picture
julie berman
19 August 2026
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex 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 Google
H P Mechanical profile picture
H P Mechanical
14 August 2026
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex 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 Google
Mark Jones profile picture
Mark Jones
29 July 2026
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
There good and fast!
Posted on Google Google
Stephen Riedel profile picture
Stephen Riedel
28 July 2026
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex 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 Google
MaryLou Herrera profile picture
MaryLou Herrera
26 July 2026
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex 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 Google
Diane Castro profile picture
Diane Castro
15 July 2026
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex 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 Google
Chip Smith profile picture
Chip Smith
11 July 2026
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex 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 Google
William Keim profile picture
William Keim
9 July 2026
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex 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.

Trusted Engine Service & Replacement in Santa Rosa & Sonoma County

Restore performance and reliability to your vehicle with certified engine services backed by a solid warranty.

For Engine Service in Santa Rosa & Sonoma County

Call (707) 571-8866

Increase the longevity of your vehicle with routine maintenance

Engine Rebuilding Services
For almost thirty years, Tristar Automotive has provided Santa Rosa’s #1 engine rebuilding service for cars, trucks, and vans. Our ASE Certified technicians treat every project as if it were their own vehicle and deliver outstanding engine rebuilding for nearly all makes and models. Come in today to discuss your engine rebuilding needs with our stellar service professionals and get an estimate for your project fast! 

Replacement Engines by Jasper
JASPER remanufactured gas engines are built to meet or exceed original equipment manufacturer measured tolerances, and most applications are covered by a 3 year/100,000 mile nationwide, transferable parts and labor warranty. These are completely remanufactured engines with all new wear parts, exacting tolerances, and run-tested reliability. Go to our online catalog to get a price on a gas engine that matches your vehicle today!

Engine Diagnostic Services
If your vehicle is giving you trouble you need to bring it into Tristar Automotive today for a thorough engine diagnostic check. Our ASE Certified technicians will use the latest technology to determine what your issue is and provide you with your options for service. You’ll get straight answers to your engine questions at a price you can easily afford!

High Performance Engines Services
Our ASE Certified technicians at Tristar Automotive love nothing more than working on high performance engines. It’s a real passion of ours and we specialize in servicing these unique vehicles year round. There’s no better muscle car service center in Northern California, so make your way to Tristar whenever you need the finest in high performance engine service – including rebuilds and replacements!

Our Customer Reviews

These are just a few reviews from our valued car service & repair customers throughout Sonoma County.

Posted on Google Google
Robert-Connie Mullan profile picture
Robert-Connie Mullan
15 October 2026
Google star 1Google star 2Google star 3Google star 4Google star 5
needed a certificate for DMV. Charged shop rate for three hours for service I suspect took mich less time.
Posted on Google Google
craig alness profile picture
craig alness
4 October 2026
Google star 1Google star 2Google star 3Google star 4Google star 5
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 Google
K Beau profile picture
K Beau
29 September 2026
Google star 1Google star 2Google star 3Google star 4Google star 5
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 Google
Michael Voight profile picture
Michael Voight
27 September 2026
Google star 1Google star 2Google star 3Google star 4Google star 5
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 Google
Pat Pointer profile picture
Pat Pointer
18 September 2026
Google star 1Google star 2Google star 3Google star 4Google star 5
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 Google
shannon stegner profile picture
shannon stegner
11 September 2026
Google star 1Google star 2Google star 3Google star 4Google star 5
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 Google
Harold Duncan profile picture
Harold Duncan
29 August 2026
Google star 1Google star 2Google star 3Google star 4Google star 5
Very efficient and professional work…Staff is very kind and friendly as well…l had a Smog check…
Posted on Google Google
James Fitzgerald profile picture
James Fitzgerald
22 August 2026
Google star 1Google star 2Google star 3Google star 4Google star 5
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 Google
julie berman profile picture
julie berman
19 August 2026
Google star 1Google star 2Google star 3Google star 4Google star 5
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 Google
H P Mechanical profile picture
H P Mechanical
14 August 2026
Google star 1Google star 2Google star 3Google star 4Google star 5
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 Google
Mark Jones profile picture
Mark Jones
29 July 2026
Google star 1Google star 2Google star 3Google star 4Google star 5
There good and fast!
Posted on Google Google
Stephen Riedel profile picture
Stephen Riedel
28 July 2026
Google star 1Google star 2Google star 3Google star 4Google star 5
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… :)

Schedule Service with Tristar Automotive

To schedule an appointment with Tristar Automotive, give us a call at (707) 571-8866 or fill out the form below with your contact information and requested service(s). One of our team members will get back to you as soon as possible!

Appointment Form