Best GMC Dealerships in Boston, Ranked by CarEdge Data

This is the CarEdge Dealer Transparency Index ranking for GMC dealers in the Boston metro. We graded every GMC dealer in the area with enough verified out-the-door quotes to score with confidence — using real PDFs, emails, and signed deals, not Google star ratings.

7 GMC dealers in Boston currently clear the data threshold. Here’s how they rank.

Last updated November 11, 2026. CarEdge refreshes these rankings daily as new verified out-the-door quotes come in.

What is the best GMC dealer in Boston?

The best GMC dealer in Boston by verified out-the-door price data is Quirk Buick Gmc (Manchester, NH): A grade, 100/100 across 4 quotes from the past year, with no quoted add-ons in its 4 quotes from the past year.

Close behind:

2. Bourne’s Auto Center (Easton), A grade, 99/100 across 19 quotes from the past year, with no quoted add-ons in its 19 quotes from the past year.
3. Marty’s Gmc (Kingston), A grade, 99/100 across 6 quotes from the past year, with no quoted add-ons in its 6 quotes from the past year.

Best for:

• Lowest dealer fees: Quirk Buick Gmc (Manchester), $499, against the NH median of $599.
• No quoted add-ons: Bourne’s Auto Center (Easton), none in its 19 quotes from the past year.
• Most quotes, past year: Bourne’s Auto Center (Easton), 19 quotes from the past year behind its A.

Among the A and B dealers ranked on this page.

Full ranking, dealer fees and quoted add-ons for every graded dealer are below.

Top 7 GMC Dealers in Boston

Ranked by CarEdge transparency score, highest to lowest. Each dealer profile links to the full review with verified out-the-door quotes.

#1 — Quirk Buick Gmc

Grade: A · Score: 100/100 · Manchester, NH

Quirk Buick Gmc is the top-graded GMC dealer in the Boston metro by verified data — A grade, 100/100, based on 4 quotes from the past year.

• Dealer fees: $499 — below the NH median of $599
• Quoted add-ons: None in 4 quotes from the past year
• Quotes, past year: 4

See full review & verified quotes →

#2 — Bourne’s Auto Center

Grade: A · Score: 99/100 · Easton, MA

Bourne’s Auto Center put no quoted add-ons on any of its 19 quotes from the past year — rare for an A-grade GMC dealer.

• Dealer fees: $584 — below the MA median of $595
• Quoted add-ons: None in 19 quotes from the past year
• Quotes, past year: 19

See full review & verified quotes →

#3 — Marty’s Gmc

Grade: A · Score: 99/100 · Kingston, MA

Not one of Marty’s Gmc’s 6 quotes from the past year carried a quoted add-on — a clean record at the A grade.

• Dealer fees: $595 — at the MA median
• Quoted add-ons: None in 6 quotes from the past year
• Quotes, past year: 6

See full review & verified quotes →

#4 — Quirk Buick Gmc Of Braintree

Grade: A · Score: 97/100 · Braintree, MA

Quirk Buick Gmc Of Braintree put quoted add-ons on just 20% of its quotes from the past year — light for an A-grade dealer.

• Dealer fees: $499 — below the MA median of $595
• Quoted add-ons: On 1 of 5 quotes from the past year (20%)
• Quotes, past year: 5

See full review & verified quotes →

#5 — Battles Buick Gmc

Grade: A · Score: 94/100 · Bourne, MA

Battles Buick Gmc put no quoted add-ons on any of its 4 quotes from the past year — rare for an A-grade GMC dealer.

• Dealer fees: $533 — below the MA median of $595
• Quoted add-ons: None in 4 quotes from the past year
• Quotes, past year: 4

See full review & verified quotes →

#6 — Mastria Gmc

Grade: B · Score: 87/100 · Raynham, MA

Not one of Mastria Gmc’s 6 quotes from the past year carried a quoted add-on — a clean record at the B grade.

• Dealer fees: $865 — above the MA median of $595
• Quoted add-ons: None in 6 quotes from the past year
• Quotes, past year: 6

See full review & verified quotes →

#7 — Mcgovern Gmc Of Westborough

Grade: B · Score: 87/100 · Westborough, MA

Quoted add-ons appear on 60% of Mcgovern Gmc Of Westborough’s quotes from the past year — the highest rate on this list. Ask for an itemized OTD before signing.

• Dealer fees: $595 — at the MA median
• Quoted add-ons: On 3 of 5 quotes from the past year (60%)
• Quotes, past year: 5

See full review & verified quotes →

Limited Data

These GMC dealers in the Boston metro have verified OTD data, but not yet enough quotes from the past year to rank. We’re actively collecting more quotes for these dealers.

• Tulley Buick Gmc (Nashua, NH) — based on 2 quotes from the past year. View dealer page
• Diamond Gmc (Auburn, MA) — based on 1 quote from the past year. View dealer page
• Hurd Auto Mall Gmc (Johnston, RI) — based on 1 quote from the past year. View dealer page
• Swanson Gmc (Acton, MA) — based on 1 quote from the past year. View dealer page
• Vendetti Motors (Franklin, MA) — based on 1 quote from the past year. View dealer page
• Vachon Gmc Of Mansfield (Mansfield, MA) — based on 3 quotes from the past year. View dealer page
• Central Buick Gmc Inc (Norwood, MA) — based on 2 quotes from the past year. View dealer page
• Greater Lowell Buick Gmc (Lowell, MA) — based on 1 quote from the past year. View dealer page
• Tasca Buick Gmc Woonsocket (Woonsocket, RI) — based on 1 quote from the past year. View dealer page
• Albrecht Auto Group (Wakefield, MA) — based on 3 quotes from the past year. View dealer page
• Albrecht Buick Gmc Of Wakefield (Wakefield, MA) — based on 1 quote from the past year. View dealer page
• Mcgovern Automotive Group (Newton, MA) — based on 2 quotes from the past year. View dealer page
• Alden Gmc (Fairhaven, MA) — based on 1 quote from the past year. View dealer page

About the CarEdge Dealer Transparency Index

Most dealer rankings come from Google star ratings and Yelp reviews — easy to game, impossible to verify. The CarEdge Dealer Transparency Index is different. We score every dealer using verified out-the-door quotes: real PDFs, emails, and screenshots from actual transactions.

Only quotes from the past year count. We split them into four groups, newest first: the newest counts 50%, then 30%, 15% and 5%.

Each dealer’s transparency score (out of 100) is weighted across four dimensions:

• Fee Transparency (30%) — Are the dealer’s fees reasonable? We add up every dealer fee and compare the total with the state median.
• Add-on Behavior (30%) — How often does the dealer include quoted add-ons like paint protection or theft deterrent, the kind you can’t say no to? Add-ons the dealer marks as optional don’t count against them.
• Price Accuracy (30%) — Does the advertised price include every charge you have to pay? We check each quote against the vehicle page: dealer fees, add-ons, the advertised price and the discount.
• Data Quality (10%) — Does the quote list taxes, dealer fees, add-ons and government fees each on its own line? Each one is worth a quarter.

Grades: A (90–100), B (80–89), C (70–79), D (60–69), F (below 60). Read the methodology →

Boston GMC Dealer Rankings at a Glance

#	Dealer	City	Grade	Score	Dealer Fees	Quoted Add-ons	Quotes, Past Year
1	Quirk Buick Gmc	Manchester	A	100	$499	None	4
2	Bourne’s Auto Center	Easton	A	99	$584	None	19
3	Marty’s Gmc	Kingston	A	99	$595	None	6
4	Quirk Buick Gmc Of Braintree	Braintree	A	97	$499	20%	5
5	Battles Buick Gmc	Bourne	A	94	$533	None	4
6	Mastria Gmc	Raynham	B	87	$865	None	6
7	Mcgovern Gmc Of Westborough	Westborough	B	87	$595	60%	5

For the live list, including dealers graded since this page last updated, see the live GMC dealer rankings near Boston on the CarEdge Dealer Transparency Index.

Compare GMC Dealers in Other Metros

CarEdge has graded GMC dealers in 36 US metros using verified out-the-door quotes. Compare other markets:

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How to Use This Data When You Shop

1. Get an OTD quote in writing before you visit. Any dealer can send a worksheet by email — if they won’t, that’s a red flag.
2. Ask for a quote with zero add-ons. Everything in the F&I office is optional. Say “please remove all dealer add-ons” and see what the price does.
3. Anchor to the OTD, not the advertised price. Dealers with a gap between advertised price and final OTD aren’t being straight with you. Don’t negotiate off the advertised number.
4. Compare three dealers minimum. Even within the same metro, dealer fees, quoted add-ons and advertised price accuracy vary widely. Use this ranking as your shortlist.

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Rankings are generated from the CarEdge Dealer Transparency Index, a public methodology that scores dealers on verified out-the-door quotes — not Google star ratings or paid placements. CarEdge refreshes the rankings daily as new verified quotes come in.