Transmission Repair & Rebuilding Experts Serving Marlborough and MetroWest

Is your transmission acting up? Are you looking for a transmission shop you can trust for honest, expert, and affordable transmission repair or rebuilding? Look no further!

At Route 85 Transmission and Service, we are passionate about customer service, and about saving you money and, most importantly, about repairing only what needs to be repaired on your vehicle.

We have the unique skills, the shop, and the talent to properly diagnose and repair your transmission in-house, at our service center located at 267B Maple Street (Rt. 85), in Marlborough, MA.

The transmission experts at Route 85 Transmission and Service bring more than 70 years of combined experience to focus on solving your transmission problems. Consumers, business owners, and municipalities across Metrowest and beyond rely on us to properly diagnose, repair, rebuild or replace their transmissions. Do you have any of these symptoms? If so, give us a call at (508) 486-9600 to discuss your concerns, ask a question, or to make an appointment! You can also send an email at

Our expert transmission repair services include:

• On-site Transmissions Rebuilding

• Remanufactured Transmissions

• Electronic Transmission Diagnostics

• Clutches

• Differentials

FREE road test and problem diagnosis

• C.V. Joints and Drive shafts

• Starter Motors & Flywheels

• Transfer Cases

• Fluid and Filter Changes


We also provide additional automotive services for our transmission customers. See our transmission services section or go to our general automotive services section for more details.


"The people at Route 85 Transmission and Service are awesome. I have trusted my vehicle repairs to Eric and Bob for many years. Over the years I have counted on them for everything from transmission rebuilding to differential replacements, and general automotive repairs.

I know that they will recommend and repair only what needs to be fixed, and I never have to worry about unncessary repairs. It's nice when you find a transmission shop that actually cares about saving you money!"

Bob M., Sterling MA

"As a woman, I know how hard it is to find a mechanic you can trust to fix your vehicle. What I like best about Route 85 Transmission and Service is their customer service! They take the time to explain to me exactly what my car needs, and what it may need in the future. For years I thought my dealer was taking good care of me, but they can't hold a candle to Eric and Bob and their team. Thank you!"

~Jennifer B., Wayland, MA



Save money if you need a temporary rental vehicle!

If you need to leave your car with us, we would be glad to reserve a Enterprise rent-a-car in your name. We have negotiated "repair shop rates" so you can save money on a rented vehicle. Enterprise will pick you up and drop you off at our shop.

Transmission Problems?

Click here to see if you are experiencing any of these symptoms with your vehicle. Then call us for a FREE professional diagnosis.

Transmission Warranties

You deserve confidence in the quality of our transmission service. Choose a company you can trust! As transmission experts, we stand behind our workmanship and our reputation.

Our rebuilt and remanufactured Transmissions and Transaxles are warranted for 12 months or 12,000 miles. We also offer 24 month/24,000 mile and 36 month/36,000 mile warranties for an additional charge.

We accept most extended warranties and we offer nationwide warranty on remanufactured transmissions. General repairs are warranted for 90 days.

Discounts and Specials

We would be glad to offer you 10 percent off on any transmission fluid and filter change, and a $100 savings on any transmission rebuilding service. Join our email list to receive our customer-only specials.

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We Accept the Following Major Credit Cards: