Routine maintenance
Oil changes, filters, fluid services and factory scheduled maintenance.
Discuss this serviceCaldwell, Idaho · General Mechanic
Professional auto repair and maintenance in Caldwell, Idaho. From routine service to an unexpected problem, DeMark Auto Inc helps keep your vehicle’s care straightforward.
Call · (208) 494-27144.7 Google rating · 35 years of industry experience
Workshop established in 1956

The right care for your vehicle
Bring your maintenance questions and repair concerns to a local workshop with a long history in Caldwell.
Oil changes, filters, fluid services and factory scheduled maintenance.
Discuss this serviceComputer diagnostics, engine performance checks and drivability repair.
Discuss this serviceBrake, ABS, shocks, struts, steering and suspension services.
Discuss this serviceDiscuss starting, charging, electrical, heating and air conditioning concerns.
Discuss this service
General Mechanic in Caldwell
Staying current with maintenance starts with your vehicle’s service schedule, mileage and driving conditions. DeMark offers oil changes, fluid services, tune ups and maintenance inspections to help you plan the care your vehicle needs.
When something changes, tell us what you notice: a noise, warning light, starting issue or difference in handling. Our repair services include engine, electrical, brake and suspension work, so the next step follows the concern rather than a guess.
Call · (208) 494-2714For your next visit


OUR WARRANTY
Parts and labor are both covered by DeMark Auto’s 12-Month / 12,000-Mile Warranty.
Professional Tools & Technology


What people say about DeMark Auto
Experiences shared by our customers.
1–3 of 10 reviews
I don't know what you guys are doing over there. This is not a mechanic shop... y'all are magicians! Thank you so much for the time and work you put into my truck. She runs better than when it was new. I can't recommend DeMark Auto Services enough! World class service and unbeatable prices! If you have mechanical issues with your vehicle, go see the team at DeMark Auto Services! They'll get you back on the road in record time without a significant dent in your wallet.
David Saylor
Customer reviewThank you DeMark Auto for getting our car in quickly and getting me back on the road! I was so worried when my car broke down and everyone else was booked out, but DeMark was able to fit us in, get my alternator replaced, and get us back on the road in 24 hours. So so grateful!!
Kate Haderlie
Customer reviewWe've gone to the great people and service at DeMark multiple times over the past few years. They always get us in quickly and address our problems, and offer options without pressure to do more. We totally trust and rely on them. I strongly recommend them for all your auto and truck repair needs!
Don Dopf
Customer reviewDeMark Auto was great to work with. They are reliable and honest. I really appreciated their service.
Meg Rooks
Customer reviewI've been to DeMark before. They were recommended by my good friend Jewel Fouts. They are always friendly and professional. You know exactly what's being done and what each service costs beforehand . This time it was alittle more expensive than expected...but it has to be done. All in all it was a good experience. Thanks so much DeMark.
Debby Nelson Petree
Customer reviewThey did a great job fixing my truck. Handling the warranty company and did it under the quote with more than I expected. I appreciate the high level of quality. Thank you
Scott Fravel
Customer reviewDeMark does great work, they are very professional & Jessica does a great job with communication. We have had multiple vehicles worked on at DeMark & are very happy eith their service & professionalism.
Kevin Fine
Customer reviewEach time I have used DeMark Auto Services they have professionally taken care of the repairs needed. Multiple times I have had them take care of electrical issues on trailers, and this time, a diagnostic of what is "that sound", they found the issue and gave us the options of what may be done. My thanks to you for your service.
stanley johnson
Customer reviewI just want to thank you and your employees, Jessica was amazing, she was nice and understanding with me and all of my questions and concerns. Your mechanic did a fantastic job and was very, very thorough from start to finish. I was very impressed with your inspection and everyone's work ethics, and the integrity of your shop. I appreciate recieving copies of all of the documentation I requested.
Stephanie
Customer reviewFor over 40 years my family has done business with DeMark Auto. We appreciate the excellent work at reasonable rates. They have always done quality work in a friendly and professional manner. Thank you for taking care of our vehicles for three generations!
Jennifer Swanson
Customer reviewYour first visit
Clear communication from your first conversation to your repair decision.
Share your vehicle’s year, make, model and the general mechanic concerns you have noticed.
Review inspection findings, proposed work and pricing with the team.
Choose the work you authorize and confirm the next steps for your visit.
Before you book — FAQ
Have a question about auto repair?
Talk with our Caldwell team.
Services include oil changes, filters, fluid services, tune ups and factory scheduled maintenance. The appropriate work depends on your vehicle’s schedule and condition.
Yes. Explain where and when the noise occurs and whether it changes with speed, braking or steering. An inspection helps identify the cause.
Yes. DeMark lists electrical diagnostics, alternator and starter repair, and related electrical services. Describe any starting, charging or accessory symptoms.
The approved offer is FREE Inspection With Oil Changes. Ask the team about your vehicle and the inspection when arranging service.
DeMark provides a 12-Month / 12,000-Mile Warranty on Parts and Labor. Ask the team about coverage for the specific repair.
Here in Caldwell
Monday–Friday: 8:00 AM–5:00 PM
General Mechanic · Caldwell
Discuss your vehicle’s needs and the next step with DeMark Auto Inc.
Call · (208) 494-2714
Ready for the next step?
Professional care. Clear options. Here in Caldwell.
Call · (208) 494-2714