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Triangle Service Center

Average Score
Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5
5.0
(2,516 Reviews)
96
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Score Details

Last 30 Day Trend

Active Business

ReScore Reviews

ReScore
Overall Rating 0.0/5Overall Rating 0.0/5Overall Rating 0.0/5Overall Rating 0.0/5Overall Rating 0.0/5
Original Review
Overall Rating 0.0/5Overall Rating 0.0/5Overall Rating 0.0/5Overall Rating 0.0/5Overall Rating 0.0/5
0
Total ReScores
-
ReScore Average
96
Net Promoter Score ®

Business Details

About

In 1978 with more than 10 years in the automotive repair field under his belt, David McAllister bought the gas station at the apex of Concord and Boston roads. During the initial land surveying it was noticed that the land configuration was indeed a perfect “Triangle.” The rest of the naming was easy, due to the variety of automotive In 1978 with more than 10 years in the automotive repair field under his belt, David McAllister bought the gas station at the apex of Concord and Boston roads. During the initial land surveying it was noticed that the land configuration was indeed a perfect “Triangle.” The rest of the naming was easy, due to the variety of automotive repairs planned during the future; the second half had to be “Service Center.” The site, more than three decades old, is now a landmark used by many to give directions to either Carlisle or to the Bedford area. Take a right at Triangle to go to Great Brook Farms in Carlisle or a left to go to the town soccer fields.

Today, Triangle is still family owned with David's son Peter McAllister manning the helm. We are proud of our heritage and even more proud of the service we have been able to provide through the years to the motoring public in the Chelmsford, Carlisle, Billerica, Westford, and the greater Lowell area.
...more

Categories
Auto Repair, Car Maintenance, Tire Sales and Repair
Contact
(978) 256-7658

Business Hours

Mon
7:00 AM - 5:00 PM
Tue
7:00 AM - 5:00 PM
Wed
7:00 AM - 5:00 PM
Thu
7:00 AM - 5:00 PM
Fri
7:00 AM - 5:00 PM
Sat
closed
Sun
closed
* Eastern Time (Us & Canada)
177 Boston Road Chelmsford, MA 01824-4615
Triangle Service Center's Reviews
Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5
5.0
(2,516 Reviews)

TS
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TONI S.
Chelmsford, MA
Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5
04/21/2025
verified customerVerified Customer
10
Consistent service
I had a service appointment today and had no other option but to wait while they were working on the car. I was able to sit in the waiting room and have internet access as well as and electric outlet to do work on the computer. It was a comfortable space and lots of sunshine coming through the window. Best of all, Nicho’s team was able to service my car sooner than expected. Always a great experience.
Thank you Nicho.

JB
JEFF B.
Chelmsford, MA
Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5
04/20/2025
verified customerVerified Customer
10
Sticker/oil
Always great service

MW
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MURIEL W.
Overall Rating 4.0/5Overall Rating 4.0/5Overall Rating 4.0/5Overall Rating 4.0/5Overall Rating 4.0/5
04/14/2025
verified customerVerified Customer
8
Oil change
Oil change

DT
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DEBBIE/DAVE T.
Carlisle, MA
Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5
04/14/2025
verified customerVerified Customer
10
Muffler madness
The guys at Triangle out did themselves again. I brought my mustang in for new mufflers, and dropped it off at around 1 pm , they gave me a call at 4 saying it was done and ready to be picked up. It wasn't supposed to be done for another day. Great guys you can't go wrong with Triangle service station!

JB
JESSE B.
Westford, MA
Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5
04/11/2025
verified customerVerified Customer
10
expert technicians with hometown service
Triangle garage never disappoints. We bring all of our vehicles for the regular maintenance. The team figured out a tricky issue with one of trucks that the dealership couldn't fix.. Peter and his team are the best in the business!

Verified Customer
Chelmsford, MA
Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5
04/11/2025
verified customerVerified Customer
10
Recommended 65000 miles service
As always great service from some of the friendliest folks in town. Never push services to increase the bottom line like other shops and dealerships
Will forever be my go to place for fair and honest service on my 2 vehicles

JC
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JEFF / EVI C.
Chelmsford, MA
Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5
04/10/2025
verified customerVerified Customer
10
Grand service as usual
Provided great advice for my Atlas

DS
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DOMENIC S.
Westford, MA
Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5
04/10/2025
verified customerVerified Customer
10
Always a great experience
Great communication, friendly and professional staff, technically always perfect.

DF
DIANE F.
Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5
04/09/2025
verified customerVerified Customer
10
So glad you are taking care of my Toyota
I feel so fortunate to live so close and that you take great care of the Toyota.

PG
PAUL G.
Chelmsford, MA
Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5
04/09/2025
verified customerVerified Customer
10
Very friendly place to bring your car for service.Went there today for a 50000 mile service on my Honda crv car was there under an hour
Excellent service excellent mechanics they not only take care of your car but they take time to explain what is happening to your vehicle but what you should do in the future

Verified Customer
Chelmsford, MA
Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5
04/08/2025
verified customerVerified Customer
10
Misfiring & valve job needed
Car would barely run and got it into our go to service station: Triangle
Car needed a valve job and now runs great.

TB
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TOM B.
Chelmsford, MA
Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5
04/06/2025
verified customerVerified Customer
10
Great service
I can always count on Triangle for dependable, quality service. I highly recommend them for all of your automotive service needs.

SL
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SIMON L.
Chelmsford, MA
Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5
04/05/2025
verified customerVerified Customer
10
Always highly reliable and trustworthy
Had my car serviced for a synthetic oil change and tire rotation/balance. A lug nut seized during the process, needing a stud replacement. The team was incredibly upfront and honest about the issue, handled the repair professionally, and completed everything successfully. Also pointed out some additional work that needed to be addressed. In the end, I need a reliable car and that's all that matters to me. Very happy with their integrity and service! Thanks, as always.

LP
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LUCIEN P.
Chelmsford, MA
BMW 128i
Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5
04/04/2025
verified customerVerified Customer
10
Absolutely the best service in all of Massachusetts
My go-to-car service experts for over 20+ years - family owned business who treats their customers like family - there is integrity in all of their pricing and work they accomplish. Lucien and Theme P

Verified Customer
Chelmsford, MA
Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5
04/04/2025
verified customerVerified Customer
10
Good service, easy to work with
I'm very happy that I brought my car to Triangle, they were able to fix my car at a much better price than the dealership and had the work completed when they said. It was very easy to communicate with them.
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