Transmission Repair in Tualatin, OR

“A mechanic friend recommended that we try Marsh Transmission in Tualatin. (We live in Central Oregon).
We had it towed to them and within a short time of looking at our car, they diagnosed the problem. It was a cracked transfer case. Paul sent us a video of the damage. The dealership in Central Oregon has always serviced our AWD vehicle and they were the last to service my transmission. He sent them the video and and worked with the Service Manager to let them know the issue. I wish Marsh could have fixed our issue, however, due to the dealership's insurance rules, it has to be towed back to Central Oregon for repair.
Paul did not charge us for the diagnosis and is working with the
Central Oregon dealership to have the car towed back here.
I now know why our mechanic friend highley recommend Marsh Tranmission to us. He has used them for years and feels they are the best in the valley.
Paul went above and beyond our expectaions in the entire process. We will use them in the future and will definitely recommend them”

“Joey and his crew are top notch.
Always fair pricing with thorough explanations of the work.
Nothing inexpensive about maintenance on a new or older Mercedes.
They understand this and it shows in the quality workmanship and parts.
Keep it up.
Easy to recommend this shop.”

“Update: November 2025! I'm still going to Sherwood Auto Repair and if I can help it I will never take my vehicles anywhere else. Not only are they amazing at communicating on my level, Katie and Alden helped me understand that my partner's car needed a muffler mount replaced and that it made more sense to have it go to a specialty shop because it would be more cost effective! I am so impressed that I will continue to drive from Gresham to make sure that my cars are serviced right. Fours cars over the years and no one but Sherwood Auto Repair will be touching them unless they tell me to go to a specialty shop!

I've been bringing my cars to Sherwood Auto Repair for the last four years. I love their model. The very first day I brought the family mini-van in they asked me what my goals were for my vehicle. We were paying off debt and getting everything in order, and I told Scott, I want to run it until the wheels fall off. They treated that vehicle like it was a priceless sports car. The wheels have fallen off, and I bought a new van. I will be taking it to Sherwood Auto, and if I have anything to say about it, my kids will be customers. I can't describe the value and peace of mind I get knowing that my family is safe and that the folks at Sherwood Auto don't cut corners. Thanks so much from the Rulmyr family!”

“These guys did a great job on my high mileage 2012 BMW X5. Had them replace the transmission with a lower mileage used transmission that I purchased and had dropped shipped to the shop. No surprises or up charges. Just a great experience from beginning to end! Would highly recommend!”

“They made a custom driveline to replace the destroyed one. They knew exactly what they were talking about and I couldn’t be happier with this new driveline!It fit perfectly too. I will them with anything I need in the future. Keep up the great work guys!”