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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
(2,559 Reviews)
96
Write a Review

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
Closing in 57 minutes
Business Hours

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
(2,559 Reviews)

DO
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DAVID / JOAN O.
Chelmsford, MA
Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5
05/31/2025
verified customerVerified Customer
10
Love this place!
Oil change and problem with shuddering when accelerating. They fixe it! No more shuddering! I am so pleased!

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!

DS
DOUG S.
North Chelmsford, MA
Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5
05/27/2025
verified customerVerified Customer
10
Highly Recommend
The team at Triangle checked all the boxes. They were courteous , professional and honest. I will be going back to them in the future

MK
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MICHAEL / TERRY K.
Chelmsford, MA
Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5
05/24/2025
verified customerVerified Customer
10
Timely service Triangle' Hallmark drliveryy
Always there in a pinch. Willing to explain. Willing to be flexible. East to work with. Done professionally. That is why my family remains a customer for over 20 years.

Thank you.

DM
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DAVID M.
Carlisle, MA
Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5
05/23/2025
verified customerVerified Customer
10
Efficient inspection service
Triangle always timely and professional

NB
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NED / MARGE B.
Carlisle, MA
Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5
05/23/2025
verified customerVerified Customer
10
Good, thorough service with a smile
good thorough service with a smile

MQ
MUSTAFA Q.
Mercedes-Benz C300
Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5
05/19/2025
verified customerVerified Customer
10
Always excellent service
Very courteous

PD
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PHYLLIS&NICK D.
Chelmsford, MA
Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5
05/19/2025
verified customerVerified Customer
10
Always a Positive Experience!
The crew at Triangle are so pleasant to deal with. They always are able to address my issues in a timely manner. Thanks to a great team!

Verified Customer
Chelmsford, MA
Mazda RX-7
Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5
05/19/2025
verified customerVerified Customer
10
Fabulous service as always
Great communication. Friendly service!

RZ
RICH Z.
Chelmsford, MA
Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5
05/16/2025
verified customerVerified Customer
10
Fantastic as Always
Super friendly staff, great service as a reasonable price. Can always count on the team at Triangle

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
05/16/2025
verified customerVerified Customer
10
Routine Service
Excellent, friendly and fast service.

GW
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GEORGE / JEAN W.
Billerica, MA
Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5
05/16/2025
verified customerVerified Customer
10
Always the best service by far .
Great service always.

RE
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RICHARD E.
Chelmsford, MA
Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5
05/15/2025
verified customerVerified Customer
9
Outstanding
Triangle has been servicing my cars for over a decade and plan on continuing for ever!

GK
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GREGG / DEBBIE K.
Chelmsford, MA
Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5Overall Rating 5.0/5
05/13/2025
verified customerVerified Customer
10
Great Service
Always a pleasure dealing with Triangle Service center.

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
05/12/2025
verified customerVerified Customer
10
Great as always
Service is always great, estimates are accurate, customer service is wonderful.
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