Whether you’re dealing with a slipping transmission, strange noises, or simply need a fluid service, Duffy’s Auto Service is the go-to transmission shop you can count on. Since 1961, we’ve proudly served St. Paul Park, MN; Cottage Grove, MN; Washington County, MN; Newport, MN; Woodbury, MN; and the surrounding areas with trusted, high-quality transmission services.

From maintenance to major transmission repairs in Saint Paul Park, our ASE-certified technicians can tackle it all. We understand that transmission issues can feel overwhelming. Our team is here to take the stress out of it all – we offer a full range of transmission repairs for all makes and models of automobiles:

Transmission Fluid Service

Over time, transmission fluid can break down, leading to overheating or wear on internal components. Our technicians will drain and replace old fluid, inspect for leaks, and ensure your transmission stays well-lubricated and cool.

Transmission Repair

If your transmission isn’t shifting smoothly or you’re experiencing problems like slipping or delayed engagement, you may need a transmission repair. We’ll show you the damage with digital inspections and a report and explain the best repair options. Our honest techs only perform work with your approval.

Transmission Replacement



In some cases, a full replacement is the most cost-effective solution, especially for older vehicles or those with irreversible damage. Our team will help you decide between a rebuilt or new transmission.

Whether your vehicle has an automatic, manual, or continuously variable transmission, we have the work around it. If you notice any alarming symptoms with your transmission, don’t wait to bring it in.

Our facility features modern equipment, multiple scan tools, and more to ensure all repairs are done right the first time. All qualified repairs come with a 3-year/36,000-mile warranty. Plus, we are pleased to provide a free shuttle service, loaner cars, and a waiting area to customers who need it.

Transmission Repair Shop Near Me

Don’t let transmission problems keep you off the road. Whether you need routine maintenance, a minor repair, or a full replacement, Duffy’s Auto Service has you covered.

Call us today or visit our location in St. Paul Park, MN. We proudly serve Cottage Grove, Newport, Woodbury, and surrounding communities, offering dealership-quality service without the dealership price. Let us help you stay on the road with confidence!