Preventative Maintenance

Preventive maintenance is the care and protection of your vehicle against potential major auto repairs...

Major Repairs

Axel, CV joint, driveshaft repair, diesel engine repair, electrical and electronic systems... and so much more.

Loaner Cars

Specialization in Volkswagen, Audi, Volvo, and BMW, Early-bird dropbox and after-hours pick-up and complimentary loaner Cars.

Certified Technicians

Quality repair services including brake repairs, diagnostics, exhaust system repairs, electrical system repairs, and steering and suspension system repairs from our ASA- and ASE-certified technicians.

Tunxis Service Center started in the 3 bay gas station in front of us. Pat started working in the service bays after getting out of the army, in the early 70's. He and Dorene bought the building with a lot of help and guidance from family.
We outgrew the gas station and moved into the old George's Auto Body shop, behind the station, in 2003.
Since the beginning, the business has been focused on building strong customer relationships and providing the highest quality of workmanship on each and every automotive repair. To that end our staff has virtually unlimited information at their finger tips while working our customers cars. However they regularly spent quite a bit of time in a formal class room setting bushing up on theory, learning new techniques and systems.
We feel confident in being able to say you can rely on our experienced service staff to perform accurate and appropriate auto service. Contact us online or visit us today for service you can count on.
Our small staff is pretty proud of the work they turn out. Car are run after servicing to verify no new leaks. We also test drive most cars to make sure the sounds and feel of the vehicle is not abnormal. They take care to make sure you will be pleased with our work.


Welcome to Tunxis Service Center

Our customers place a lot of trust in us. It is our job to see to it that they are not llet down. We invite you to come see what quality service is supposed to be.

We spend a great deal of time in technical study. The list of technical sites we subscribe to is ever increasing. We also travel to training seminars throughout New England and the Mid-Atlantic states. The seminars, intense training and tech to tech discussions help us prepare to troubleshoot unique problems and properly service the vehicles we specialize in.

At Tunxis Service Center, you can expect:

Quality repair services including brake repairs, diagnostics, exhaust system repairs, electrical system repairs, and steering and suspension system repairs from our ASA- and ASE-certified technicians.

Other services including diesel engine system repairs, preventive maintenance, transmission repairs, and TPMS adjustments.

Specialization in Volkswagen, Audi, Volvo, and BMW.

18-month, 18,000-mile warranty.

Free loaner cars.

Early-bird dropbox and after-hours pick-up.

Free WiFi in our waiting area.


Latest Reviews


Finding a local mechanic you can trust can be difficult. Pat at Tunxis Service Center is a diamond in the rough and serves his customers with integrity and a smile. Loaners are usually available which is a very convenient service. We've been going to Tunxis for 6 years and he's kept our family's cars running great from new to well over 150,000 miles. Highly, highly recommended!

Scott R.

Five stars! My experience with Tunxis Service Center in Unionville, CT has been beyond positive. It’s always a pleasure doing business with the owner Pat, and his technicians. They are uncommonly fair and honest, and take customer service to the next level. The Tunxis team has a passion for cars that’s evident by their knowledge and ability to troubleshoot challenging issues - even on a BMW with 135,000 miles. What more could you ask for? I highly recommend them as a place to service your German car.

Audrey B.

As soon as you enter Tunxis Service Center it's a whole new experience! Pat Grace the owner greeted me as I asked for a second opinion for my car repair. He diagnostically evaluated my car & explained options, then gave me a lead on to a VW catalytic converter Federal warranty program. (my dealorship did NOT mention) Saving me $1000. His station is clean and professional. I feel confident and recommend Pat Grace to anyone who has a BMW, AUDI, VOLVO or VW. This place is first Class!

We are here for your daily maintance and repairs.

Have a question or need a custom quote?

When we service a vehicle, we inspect it for potential problems or maintenance needs. Our customers will then have the information they need, in a prioritized list, so they can make a fully informed decision. Call today (860) 673-0600