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.

6 GMC dealers in Houston currently clear the data threshold. Here’s how they rank.

Last updated September 30, 2026. CarEdge refreshes these rankings daily as new verified out-the-door quotes come in.

The Best GMC Dealers in Houston

The best GMC dealer in Houston by verified out-the-door price data is Group 1 Gmc Southwest (Houston, TX): A grade, 100/100 across 5 verified quotes, with no dealer add-ons in any verified quote.

Close behind:

2. Group 1 Buick Gmc South (Houston), A grade, 97/100 across 22 verified quotes, with a $225 doc fee, under the TX average of $240.
3. Gay Buick Gmc (Dickinson), A grade, 96/100 across 5 verified quotes, with a $225 doc fee, under the TX average of $240.

Full ranking, fees and add-on data for every graded dealer are below.

Top 6 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 Gmc Southwest

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

Group 1 Gmc Southwest is the top-graded GMC dealer in the Houston metro by verified data — A grade, 100/100, based on 5 verified OTD quotes.

• Doc fee: $225 — below the TX average of $240
• Add-ons: None detected in verified quotes
• Listing accuracy: 0.9% below the advertised listing
• Verified quotes: 5

See full review & verified quotes →

#2 — Group 1 Buick Gmc South

Grade: A · Score: 97/100 · Houston, TX

Group 1 Buick Gmc South holds the A grade across 22 verified OTD quotes — a substantial sample size.

• Doc fee: $225 — below the TX average of $240
• Add-ons: 5% of quotes, avg $54
• Listing accuracy: 2.3% below the advertised listing
• Verified quotes: 22

See full review & verified quotes →

#3 — Gay Buick Gmc

Grade: A · Score: 96/100 · Dickinson, TX

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

• Doc fee: $225 — below the TX average of $240
• Add-ons: 20% of quotes, avg $100
• Listing accuracy: Quoted price matches the advertised listing
• Verified quotes: 5

See full review & verified quotes →

#4 — Group 1 Buick Gmc North

Grade: A · Score: 90/100 · Houston, TX

Group 1 Buick Gmc North quoted prices 7.2% below the advertised listing — the kind of discount that rewards getting the OTD in writing.

• Doc fee: $225 — below the TX average of $240
• Add-ons: 20% of quotes, avg $199
• Listing accuracy: 7.2% below the advertised listing
• Verified quotes: 10

See full review & verified quotes →

#5 — Classic Buick Gmc

Grade: C · Score: 77/100 · Houston, TX

Classic Buick Gmc grades a C — add-ons appear on 64% of verified quotes, averaging $1,794. Ask for an itemized OTD before signing.

• Doc fee: $225 — below the TX average of $240
• Add-ons: 64% of quotes, avg $1,794
• Listing accuracy: 0.9% above the advertised listing
• Verified quotes: 11

See full review & verified quotes →

#6 — Texan Gmc

Grade: F · Score: 56/100 · Humble, TX

Texan Gmc is the lowest-graded GMC dealer in the Houston metro by verified data. Verified quotes show a pattern of below-average transparency. Bring data and be ready to walk.

• Doc fee: Not available
• Add-ons: 20% of quotes, avg $399
• Listing accuracy: 1.2% above the advertised listing
• Verified quotes: 5

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 2 verified OTD quotes. View dealer page
• Ron Carter Gmc (Alvin, TX) — based on 1 verified OTD quote. View dealer page
• Finnegan Buick Gmc (Rosenberg, TX) — based on 2 verified OTD quotes. View dealer page
• Demontrond Buick Gmc (Houston, TX) — based on 1 verified OTD quote. View dealer page
• Freedom Gmc Greenville (Houston, TX) — based on 1 verified OTD quote. 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.

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).

Houston GMC Dealer Rankings at a Glance

#	Dealer	City	Grade	Score	Doc Fee	Add-Ons	Quotes
1	Group 1 Gmc Southwest	Houston	A	100	$225	$0	5
2	Group 1 Buick Gmc South	Houston	A	97	$225	$54	22
3	Gay Buick Gmc	Dickinson	A	96	$225	$100	5
4	Group 1 Buick Gmc North	Houston	A	90	$225	$199	10
5	Classic Buick Gmc	Houston	C	77	$225	$1,794	11
6	Texan Gmc	Humble	F	56	—	$399	5

For the live list, including dealers graded since this page last updated, 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 28 US metros using verified out-the-door quotes. Compare other markets:

• Best GMC Dealerships in Phoenix
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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 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. CarEdge refreshes the rankings daily as new verified quotes come in.