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The 10 Best Transmission Repair Shops in Portland (2026)
This ranking of Portland transmission repair shops is built from Google review data and updated for 2026 using a Bayesian-style approach that weights average rating by review count. That method favors businesses with both high scores and substantial customer feedback, helping distinguish widely trusted shops from tiny outliers. Portland has a mix of neighborhood garages and larger service centers, and this list reflects options across the city and nearby suburbs. We focused on verifiable Google ratings and review volume rather than advertising language so you can compare real customer experience at a glance.
This ranking is computed from Google reviews (our method). Listings marked Partner are paid advertising spots: they sit alongside the ranking without changing its order.
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Everett Street Autoworks Mechanics
Everett Street Autoworks Mechanics earns the top spot. It carries a 4.9 Google rating backed by 2,163 reviews and is listed as a Transmission shop at 509 NW Everett St in Portland. The combination of an excellent score and an unusually large number of reviews gives it the highest weighted position in our system. That depth of customer feedback is the deciding factor that places it above other highly rated shops.
The full ranking
Trans Medic Transmissions
Trans Medic Transmissions holds a 4.9 average across 518 reviews and appears as a Transmission shop at 2250 NW Birdsdale Ave in Gresham.
518 reviews
Matrix Integrated – Downtown
Matrix Integrated – Downtown posts a 4.9 rating from 348 reviews and is categorized as an Auto repair shop at 4000 S Macadam Ave in Portland (South Portland area).
348 reviews
Marsh Transmission
Marsh Transmission is rated 4.9 based on 110 reviews and is listed as a Transmission shop on 8810 SW Old Tualatin-Sherwood Rd in Tualatin.
110 reviews
Perfection Plus Transmission Parts
Perfection Plus Transmission Parts posts a 4.9 Google score from 58 reviews and shows up as a Transmission shop at 4645 NE 135th Ave in Portland’s northeast side.
58 reviews
A-1 Automotive & Fleet
A-1 Automotive & Fleet carries a 4.8 average from 423 reviews and is listed as an Auto repair shop at 7812 SE 82nd Ave in Portland.
423 reviews
Wally & Son Automotive
Wally & Son Automotive has a 4.8 rating with 156 reviews and is identified as an Auto repair shop on 9650 SW Canyon Rd in southwest Portland.
156 reviews
Bradshaw’s Auto Repair – Fremont
Bradshaw’s Auto Repair – Fremont sits at a 4.8 average from 116 reviews and is categorized as an Auto repair shop at 7305 NE Fremont St in Portland.
116 reviews
AndersonFam Transmission and Auto Repair LLC
AndersonFam Transmission and Auto Repair LLC is rated 4.8 across 78 reviews and appears as a Transmission shop at 16755 SE Market St in Portland.
78 reviews
Catalyst Powertrain new home of U.S. Transmissions
Catalyst Powertrain new home of U.S. Transmissions posts a 4.9 rating from 24 reviews and is listed as a Truck repair shop at 10 NE Walker St in Portland (NE Portland).
24 reviews
Frequently asked questions
How should I choose a transmission repair shop?
Look at recent Google ratings and the number of reviews to see consistent performance, and read several recent reviews for detail on similar repairs. Ask about certifications, warranties, and the shop’s experience with your vehicle make, and request a written estimate before work begins.
What does transmission repair typically cost?
Costs vary widely depending on the vehicle, the nature of the problem, and whether parts or a rebuild are needed. Get multiple written estimates, ask which parts are new versus remanufactured, and factor in warranty terms and labor hours when comparing quotes.
What should I check before hiring a transmission shop?
Confirm the shop’s physical address and business credentials, read recent customer reviews, and ask about guarantees on labor and parts. Also request a clear, itemized estimate and a timeline so you know what to expect if you leave your vehicle for repairs.
How was this ranking created?
This list is derived from Google review data and updated for 2026 using a Bayesian-style method that weights average ratings by the number of reviews. That approach favors businesses with both high scores and substantial review volume rather than relying on raw averages alone.