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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
(2,582 Reviews)
96
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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
(2,582 Reviews)

JH
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JILL H.
Carlisle, MA
Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5
05/30/2025
verified customerVerified Customer
10
TRIANGLE is the best!!!
It is lovely to be warmly welcomed by name when I go to Triangle. Not only are they gracious but they are very competent and I know that they are going to handle any issues that I have with my van. They always let me know what they are keeping an eye on and charge fairly. The new email reminder and "we missed you" messages are very helpful. I look forward to dropping my van off to be assessed/fixed/stickered which is a rare feeling to have about a service station. Thank you Triangle!
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