Best GMC Dealerships in Houston, Ranked by CarEdge Data

This is the CarEdge Dealer Transparency Index ranking for GMC dealers in the Houston 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.

4 GMC dealers in Houston cleared the data threshold this quarter. It’s a smaller field — 5 more GMC dealers are tracked below but do not yet have enough verified quotes to grade — so treat this as a focused shortlist and still gather your own quotes. Here’s how they rank.

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.

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

• Fee Transparency (30%) — Is the doc fee reasonable compared to the state average?
• Add-on Behavior (30%) — How often does the dealer bundle add-ons, and at what cost?
• Price Accuracy (30%) — Does the listing price match the actual OTD price?
• Data Quality (10%) — More verified quotes mean higher confidence in the grade.

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

Top 4 GMC Dealers in Houston

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

#1 — Group 1 Buick Gmc South

Grade: A · Score: 99/100 · Houston, TX

Group 1 Buick Gmc South is the top-graded GMC dealer in the Houston metro by verified data — A grade, 99/100, based on 28 verified OTD quotes.

• Doc fee: $219 — below the TX average of $231
• Add-ons: 4% of quotes, avg $42
• Listing accuracy: 1.4% below the advertised listing
• Verified quotes: 28

See full review & verified quotes →

#2 — Group 1 Buick Gmc North

Grade: A · Score: 93/100 · Houston, TX

Group 1 Buick Gmc North quoted prices 6.6% below the advertised listing — the kind of discount that rewards getting the OTD in writing.

• Doc fee: $90 — well below the TX average of $231
• Add-ons: 20% of quotes, avg $199
• Listing accuracy: 6.6% below the advertised listing
• Verified quotes: 10

See full review & verified quotes →

#3 — Texan Gmc

Grade: A · Score: 90/100 · Humble, TX

Texan Gmc keeps add-ons on just 20% of verified quotes — light for an A-grade dealer.

• Doc fee: $85 — well below the TX average of $231
• Add-ons: 20% of quotes, avg $399
• Listing accuracy: 1.4% above the advertised listing
• Verified quotes: 5

See full review & verified quotes →

#4 — Classic Buick Gmc

Grade: C · Score: 76/100 · Houston, TX

Classic Buick Gmc grades a C — add-ons appear on 67% of verified quotes, averaging $1,914. Ask for an itemized OTD before signing.

• Doc fee: $90 — well below the TX average of $231
• Add-ons: 67% of quotes, avg $1,914
• Listing accuracy: 2.8% above the advertised listing
• Verified quotes: 15

See full review & verified quotes →

Limited Data

These GMC dealers in the Houston metro have verified OTD data, but not yet enough to assign a confident grade. We’re actively collecting more quotes for these dealers.

• Gulf Coast Buick Gmc (Angleton, TX) — based on 1 verified OTD quote. View dealer page
• Gay Buick Gmc (Dickinson, TX) — based on 2 verified OTD quotes. View dealer page
• Freedom Gmc Greenville (Houston, TX) — based on 3 verified OTD quotes. View dealer page
• Demontrond Buick Gmc (Houston, TX) — based on 1 verified OTD quote. View dealer page
• Group 1 Automotive (Houston, TX) — based on 0 verified OTD quotes. View dealer page

Houston GMC Dealer Rankings at a Glance

#	Dealer	City	Grade	Score	Doc Fee	Add-Ons	Quotes
1	Group 1 Buick Gmc South	Houston	A	99	$219	$42	28
2	Group 1 Buick Gmc North	Houston	A	93	$90	$199	10
3	Texan Gmc	Humble	A	90	$85	$399	5
4	Classic Buick Gmc	Houston	C	76	$90	$1,914	15

These rankings are a quarterly snapshot. For the continuously updated list — including dealers rated since this article was published — see the live GMC dealer rankings near Houston on the CarEdge Dealer Transparency Index.

Compare GMC Dealers in Other Metros

CarEdge has graded GMC dealers in 22 US metros using verified out-the-door quotes. Compare other markets:

• Best GMC Dealerships in Phoenix
• Best GMC Dealerships in Dallas-Fort Worth
• Best GMC Dealerships in Los Angeles
• Best GMC Dealerships in Chicago
• Best GMC Dealerships in Atlanta
• Best GMC Dealerships in Washington DC
• Best GMC Dealerships in Seattle
• Best GMC Dealerships in Denver
• Best GMC Dealerships in New York City
• Best GMC Dealerships in Boston
• Best GMC Dealerships in Detroit
• Best GMC Dealerships in Tampa
• Best GMC Dealerships in Austin
• Best GMC Dealerships in Orlando
• Best GMC Dealerships in Charlotte
• Best GMC Dealerships in Indianapolis
• Best GMC Dealerships in Raleigh-Durham
• Best GMC Dealerships in Baltimore
• Best GMC Dealerships in Milwaukee
• Best GMC Dealerships in Providence
• Best GMC Dealerships in Allentown

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 listing. Dealers with a gap between advertised price and final OTD aren’t being straight with you. Don’t negotiate off the listing number.
4. Compare three dealers minimum. Even within the same metro, doc fees, add-on policies, and listing 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. Data updated quarterly. Last updated: Q3 2026.