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About Us

Long Automotive Group currently has two locations providing the best combination of sales and service in the luxury and mainstream vehicle markets.

Long Cadillac (1927-Present)

Long Subaru (2004-Present)

We are the oldest continually-owned Cadillac dealership in the country, a testament to competence, respect and taking seriously the mandate to do things right. We invite you to come enjoy decades of platinum-level experience.

Our state-of-the-art facility and quality of service has been a winner of the prestigious GM Standards for Excellence every year for the past 17 years. We owe our success to our leadership and the many staffers who have been with the Long family for over 30 years. At Long Cadillac, we are determined to provide you with the best possible purchasing and ownership experience.

Our dedicated sales staff and top-trained technicians are here to make your auto shopping experience fun and easy for those seeking an affordable car loan or lease. We guarantee that your relationship with us will be one that you will gladly tell your friends and family about. 


One of the joys of working in a small community is how quickly we can respond to local needs. Long Subaru is a long-time supporter of the Webster-Dudley Boys & Girls Club, Webster-Dudley Food Share, Webster-Charlton-Dudley School Departments, and much more!

Cadillac V-series
Cadillac XT6
Cadillac XT6 Interior
Cadillac Escala Concept
Cadillac CT6 Interior
Cadillac Escalade
Cadillac Escalade Interior
Cadillac XT5
Cadillac CT4
Subaru Forester
Subaru Outback
Subaru Legacy
Subaru Legacy Sport Interior
Subaru Crosstrek
Subaru Badge
Subaru BRZ Series.Yellow
Subaru Impreza

Long Cadillac

218 Turnpike Road

Southborough, MA 01772


General Manager: Leo Tahajian


Long Subaru

7 Sutton Road

Webster, MA 01570


Executive Manager: Scott Barry


R.H. Long Motor Co.

Now headed by third and fourth generation family members, Long Automotive Group has a long-reaching history. Originally formed as R.H.Long Motor Co. in 1922, the company produced the Bay State automobile built completely in Massachusetts for four years. Marketed as 'a quality car at a reasonable price', the Bay State was available as a coupe, a sedan, and a touring model. Production was done in two factories, both of which still stand today. The Framingham factory (59 Fountain Street), originally part of the R.H. Long Shoe Manufacturer's holdings, was converted to automobile production after World War I. Today, it is the Bancroft Building housing a community of local artisans. The Worcester factory (67 Millbrook Street) was purpose built in 1920 by Mr. Long as part of a million dollar investment. Often still referred to as 'the old Thom McAn building', as it served as that company's world headquarters from 1965 to 1996, today it is the recently refurbished Worcester Business Center.

R.H. Long Motor Sales Co. opened as a Cadillac dealership in 1927. Over the years it expanded adding a GMC franchise in 1929,  Pontiac distributorship in 1931, and Oldsmobile in the early 90's. Interestingly, the Long family also held one of the first Subaru dealership in the country during the 1960s. More recently both Hummer (2002-2010) and Saab (2007-2010) were part of the current Southborough location until their respective liquidations.

Long Automotive mid-1980s ad
R.H. Long Factory
Bay State Automobile
Bay State ad sheet c.1922
Bay State automobile badge
Bay State Automobile
Cadillac ads c. 1927
Cadillac store sign
offer brochure c. 1953
R.H. Long dealership c.1961
R.H. Long dealership c.1961
R.H. Long dealership c.1968
Mark Mazuroski - Tech of the Month

-- FROM THE EDITOR --  This site strives to faithfully represent the history of our company. The information reproduced here derives from both public record and family memory and is the result of many hours of collaboration on the part of current and former employees. Whenever possible we have provided the source of our material. Any errors in dates, photo descriptions, or names is unintentional. The inclusion of any links does not necessarily imply a recommendation or endorse the views expressed within them. While reasonable efforts are made to ensure that the contents of this site are accurate, this site and its contents are provided on an “as is,” “as available” basis, without warranties of any kind. By using this site you are accepting all of the terms of this disclaimer notice, including exclusions and limitations of liability. This website and its content is copyright of Long Automotive Group -

© 2017 LAG. All rights reserved. Any redistribution or reproduction of part or all of the contents in any form is prohibited. You may not, except with our express written permission, distribute or commercially exploit the content. Nor may you transmit it or store it in any other website or other form of electronic retrieval system. Comments, corrections, and additions can be submitted to for review. Thank you.

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