Mountainside Auto Service
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Highly recommend this shop to be your go-to mechanic. Mark was able to diagnose and fix my 4Runner's problem quickly as well as repair a few misc. Mark was friendly and didn't make me feel pressured into having the work i needed done through him. If you are looking for a Battle Ground auto repair shop you can depend on, consider Mountainside Auto Service LLC.

Newly established in 2017, we are Battle Ground's premier auto repair and maintenance shop and look forward to providing our friends and neighbors with reliable and trustworthy auto repair and maintenance services.
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Owner Mark Wendt grew up around auto repair and has always loved it. A true car lover and hands-on technician, he owned his first auto repair shop in Newberg, OR for over 20 years between 1988 and 2008.

Though Mountainside Auto Service, LLC is a new business venture, Mark has a total of 40 years experience in the automotive industry, is an ASE Certified Master Technician and Service Consultant, a Certified AAM (Accredited Automotive Manager) through AMI (Automotive Management Institute), has many other types of technical training, and holds various additional certifications.
Mountainside Auto Service is committed to ensuring effective communication and digital accessibility to all users. We are continually improving the user experience for everyone, and apply the relevant accessibility standards to achieve these goals. We welcome your feedback. Please call Mountainside Auto Service (360) 687-9000 if you have any issues in accessing any area of our website.
When it's time for one of your vehicle's regular scheduled maintenance services or you've noticed your vehicle acting up lately, bring it to our auto repair shop. If you hear strange noises like grinding or knocking or you see fluids leaking beneath your vehicle or it is time for your vehicle inspection or tune up, come see us today!
We offer top-notch brake repair and service on all vehicle makes and models. Our team of experienced ASE-certified technicians uses only state-of-the-art diagnostic equipment to ensure that your vehicle's brake system will be serviced and cared for accordingly.

We invite you to visit our auto repair shop for a free brake fluid and brake system inspection, so that you can be undisturbed about your vehicle' condition if you decide to go on a long trip across the country.Our team of experienced and skillful technicians will inspect all major components of your vehicle's brake system, including calipers, pads and shoes, hardware, and rotors, and they will tell you what type of services have to be performed.
When your Check Engine Light turns on, it can feel like one of the most frustrating problems that can crop up with your vehicle. It is just a little light that indicates an issue--but what is it? Is it something simple or something to be concerned about? It could be either one, and it should be checked as soon as possible.
Reviews (8)
Ashley Marinenko
Ashley Marinenko
Dec 02, 2021
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My car had a flashing check engine light and was running really rough. I brought it to Mark and not only did he fix the issue, he had it done same day. He went above and beyond to make sure it was done correctly and guaranteed his work. It was also a great value and I highly recommend Mountainside! I will be bringing my cars here from now on.
If you’re skeptical of auto shops like I am, look no further. Mark will cure your mechanical blues.
Carol Leen
Carol Leen
Oct 30, 2021
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Positive: Professionalism, Punctuality, Quality, Value
Mark offered a fair and reasonable price for his mechanic expertise that I needed, and had an appointment that fit in with my wonky schedule. He had my vehicle ready within the time frame he promised and I couldn't be happier and feel that I may have found a reliable mechanic for our 3 vehicles. THANKS MARK!
Services: Transmission, General repairs & maintenance
Niel Chase
Niel Chase
Oct 22, 2021
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Mark is honest and offered the best price in town for the repair I needed. Plus, he offers a better warranty than any other location in town as well... great experience, best value for the money, and I will definitely be back if the need arises (fingers crossed it doesn't)! Thanks, Mark!
Joseph Hefley
Joseph Hefley
Oct 15, 2021
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Mark is absolutely amazing! He took great care of my cars for me is a very timely manner and did great work. Fit me in on the fly pretty much both times and made it to where I can take care of what I needed to concentrate on instead of turning a wrench for half of the day. Fair prices. Doesn't go cheap on parts. Definitely appreciate you, Mark. Thanks again!
Kelsa Blankenship
Kelsa Blankenship
Aug 15, 2021
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Mark is great, with any car repairs can be expensive but so far I haven't had any problems with his repairs. He is super fast as well, I always get my car back sooner than expected. Helpful, honest and straightforward.
Darrell Wilson
Darrell Wilson
Jul 23, 2021
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I'm a new customer with Mountainside Auto and I couldn't be more satisfied with the service, from start to finish. Mark is a real nice guy and knows is stuff. I tried to swap out the spark plugs in my Honda fit and hit a snag that stopped me in my tracks. I contacted Mountainside Auto, Mark answered the phone and assured me he could make everything right. Mark was able to fit me in immediately. I dropped the car off at 2 in the afternoon, he said he'd have it done before 5:30 much to my surprise Mark called me at 4 letting me know my car was fixed and ready for pickup. I was also surprised by the
Glenda Flanagan
Glenda Flanagan
Jul 17, 2021
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Mark was recommended to me by a friend and I’m so pleased I took me car to him. He is straightforward ,knowledgeable, and affordable. He is excellent in all aspects of his business. He is honest, respectable and explains what’s going on with your car in simple terms. So glad to have found you
Services: Check engine light diagnostic, Engine repair
Jason
Jason
Jul 05, 2021
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Mark was very busy with other projects,but still took care of fixing my vehicle.
He did a great job,and his shop feels more like a old school mechanic, he didn’t just rush me in and out,,felt like he actually cared about getting the job done right. He was very professional,and did a Fantastic job on my vehicle,, I plan on only going to him from now on when I need a mechanic.
I rarely write reviews,,but when you get great service,I think it’s important to leave a positive review. 👍🏼 Great job “mountainside auto”.