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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
(2,642 Reviews)
96

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.
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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
(2,642 Reviews)

SC
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STEVEN / MARYELLEN C.
Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5
03/31/2026
verified customerVerified Customer
10
Help with battery for Honda Fit
Triangle had replaced the battery last Fall. Over the winter, we did not drive the car as often as usual, and the battery was struggling to keep a charge. Given how cold it was this winter, we assumed the lack of use caused the issue. We had Triangle check it out and they first replaced it under warrantee, but that battery also lost its charge quickly. They then ordered a different brand and asked to keep it a few days to double check everything. Extra attention, all under warrantee. The Fit is now happy and starting great
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