Best GMC Dealerships in Texas, Ranked by CarEdge Data

This is the CarEdge Dealer Transparency Index ranking for GMC dealers across Texas. We grade dealers using verified out-the-door quotes — real PDFs, emails, and signed deals — not Google star ratings.

We graded 27 GMC dealers across Texas; below are the top 20 by transparency score. If you’re shopping a specific metro, jump to the city-by-city rankings below for a tighter local shortlist.

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

The Best GMC Dealers in Texas

The best GMC dealer in Texas 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. Steele Gmc Round Rock (Round Rock), A grade, 100/100 across 5 verified quotes, with no dealer add-ons in any verified quote.
3. 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.

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

Top 20 GMC Dealers in Texas

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 Texas 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 — Steele Gmc Round Rock

Grade: A · Score: 100/100 · Round Rock, TX

Steele Gmc Round Rock quoted prices 3.8% 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: None detected in verified quotes
• Listing accuracy: 3.8% below the advertised listing
• Verified quotes: 5

See full review & verified quotes →

#3 — 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 →

#4 — Chuck Nash Chevrolet Buick Gmc

Grade: A · Score: 96/100 · San Marcos, TX

Chuck Nash Chevrolet Buick Gmc keeps add-ons on just 19% of verified quotes — light for an A-grade dealer.

• Doc fee: $225 — below the TX average of $240
• Add-ons: 19% of quotes, avg $220
• Listing accuracy: 8.2% below the advertised listing
• Verified quotes: 16

See full review & verified quotes →

#5 — Gay Buick Gmc

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

Gay Buick Gmc quotes prices within 0.2% of the advertised listing — one of the cleanest pricing patterns on this list.

• 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 →

#6 — Ewing Buick Gmc

Grade: A · Score: 92/100 · Plano, TX

Ewing Buick Gmc earns the A grade with 35 verified OTD quotes — one of the deepest datasets on this list.

• Doc fee: $351 — well above the TX average of $240
• Add-ons: None detected in verified quotes
• Listing accuracy: 0.7% below the advertised listing
• Verified quotes: 35

See full review & verified quotes →

#7 — Tom Clark Auto Park

Grade: A · Score: 92/100 · Denton, TX

Verified quotes from Tom Clark Auto Park came in 3.7% under the advertised listing.

• Doc fee: $225 — below the TX average of $240
• Add-ons: 29% of quotes, avg $171
• Listing accuracy: 3.7% below the advertised listing
• Verified quotes: 14

See full review & verified quotes →

#8 — Ancira Patriot Buick Gmc

Grade: A · Score: 91/100 · Killeen, TX

Ancira Patriot Buick Gmc earns an A-grade on the CarEdge Dealer Transparency Index, based on 12 verified OTD quotes.

• Doc fee: $225 — below the TX average of $240
• Add-ons: 50% of quotes, avg $484
• Listing accuracy: 8.4% below the advertised listing
• Verified quotes: 12

See full review & verified quotes →

#9 — Legacy Chevrolet Gmc Of Waxahachie

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

Legacy Chevrolet Gmc Of Waxahachie holds the A grade across 21 verified OTD quotes — a substantial sample size.

• Doc fee: $225 — below the TX average of $240
• Add-ons: None detected in verified quotes
• Listing accuracy: 0.6% above the advertised listing
• Verified quotes: 21

See full review & verified quotes →

#10 — Group 1 Buick Gmc North

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

Group 1 Buick Gmc North priced 7.2% below its own listings on verified deals — a rare direction for the gap to run.

• 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 →

#11 — Cavender Buick Gmc North

Grade: B · Score: 89/100 · San Antonio, TX

Cavender Buick Gmc North earns a solid B on verified data — a doc fee at or below the TX average. The one watch-out: add-ons show on 50% of quotes (avg $402).

• Doc fee: $225 — below the TX average of $240
• Add-ons: 50% of quotes, avg $402
• Listing accuracy: 3.5% below the advertised listing
• Verified quotes: 6

See full review & verified quotes →

#12 — Cavender Buick Gmc West

Grade: B · Score: 88/100 · San Antonio, TX

What Cavender Buick Gmc West advertises is what its verified quotes show — within 0.9% of listing.

• Doc fee: $225 — below the TX average of $240
• Add-ons: 40% of quotes, avg $398
• Listing accuracy: 0.9% above the advertised listing
• Verified quotes: 10

See full review & verified quotes →

#13 — Gunn Buick Gmc

Grade: B · Score: 88/100 · Selma, TX

Gunn Buick Gmc grades a B: a doc fee at or below the TX average, but add-ons show on 50% of quotes (avg $547) — ask for an itemized OTD.

• Doc fee: $225 — below the TX average of $240
• Add-ons: 50% of quotes, avg $547
• Listing accuracy: 1.0% above the advertised listing
• Verified quotes: 8

See full review & verified quotes →

#14 — Covert Chevrolet Buick Gmc

Grade: B · Score: 88/100 · Austin, TX

A B for Covert Chevrolet Buick Gmc — a doc fee at or below the TX average. The watch-out: add-ons show on 40% of quotes (avg $624).

• Doc fee: $225 — below the TX average of $240
• Add-ons: 40% of quotes, avg $624
• Listing accuracy: 2.5% above the advertised listing
• Verified quotes: 5

See full review & verified quotes →

#15 — Toliver Brothers

Grade: B · Score: 88/100 · Ballinger, TX

Toliver Brothers quoted prices 3.9% 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: 25% of quotes, avg $699
• Listing accuracy: 3.9% below the advertised listing
• Verified quotes: 4

See full review & verified quotes →

#16 — Mckinney Buick Gmc

Grade: B · Score: 87/100 · Mckinney, TX

Mckinney Buick Gmc earns a solid B on verified data — a doc fee at or below the TX average. The one watch-out: add-ons show on 53% of quotes (avg $995).

• Doc fee: $225 — below the TX average of $240
• Add-ons: 53% of quotes, avg $995
• Listing accuracy: 4.1% below the advertised listing
• Verified quotes: 15

See full review & verified quotes →

#17 — Covert Buick Gmc Austin

Grade: B · Score: 86/100 · Austin, TX

Covert Buick Gmc Austin quotes prices within 0.7% of the advertised listing — one of the cleanest pricing patterns on this list.

• Doc fee: $225 — below the TX average of $240
• Add-ons: 56% of quotes, avg $869
• Listing accuracy: 0.7% above the advertised listing
• Verified quotes: 9

See full review & verified quotes →

#18 — Sewell Buick Gmc

Grade: B · Score: 86/100 · Dallas, TX

Sewell Buick Gmc grades a B: a doc fee at or below the TX average, but add-ons show on 50% of quotes (avg $495) — ask for an itemized OTD.

• Doc fee: $225 — below the TX average of $240
• Add-ons: 50% of quotes, avg $495
• Listing accuracy: 3.1% below the advertised listing
• Verified quotes: 8

See full review & verified quotes →

#19 — Classic Buick Gmc Of Cleburne

Grade: B · Score: 85/100 · Cleburne, TX

A B for Classic Buick Gmc Of Cleburne — a doc fee at or below the TX average. The watch-out: add-ons show on 57% of quotes (avg $571).

• Doc fee: $225 — below the TX average of $240
• Add-ons: 57% of quotes, avg $571
• Listing accuracy: 1.5% above the advertised listing
• Verified quotes: 7

See full review & verified quotes →

#20 — Ancira Buick Gmc

Grade: B · Score: 84/100 · Boerne, TX

Add-ons appear on 75% of verified quotes at Ancira Buick Gmc, averaging $1,310 — the highest rate on this list. Ask for an itemized OTD before signing.

• Doc fee: $225 — below the TX average of $240
• Add-ons: 75% of quotes, avg $1,310
• Listing accuracy: 3.9% below the advertised listing
• Verified quotes: 4

See full review & verified quotes →

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).

GMC Dealers by Metro in Texas

Shopping a specific city? These metro-level rankings drill into GMC dealers near each major Texas market:

• Best GMC Dealerships in Houston
• Best GMC Dealerships in Dallas-Fort Worth
• Best GMC Dealerships in Austin
• Best GMC Dealerships in San Antonio
• Best GMC Dealerships in Killeen

Texas 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	Steele Gmc Round Rock	Round Rock	A	100	$225	$0	5
3	Group 1 Buick Gmc South	Houston	A	97	$225	$54	22
4	Chuck Nash Chevrolet Buick Gmc	San Marcos	A	96	$225	$220	16
5	Gay Buick Gmc	Dickinson	A	96	$225	$100	5
6	Ewing Buick Gmc	Plano	A	92	$351	$0	35
7	Tom Clark Auto Park	Denton	A	92	$225	$171	14
8	Ancira Patriot Buick Gmc	Killeen	A	91	$225	$484	12
9	Legacy Chevrolet Gmc Of Waxahachie	Waxahachie	A	90	$225	$0	21
10	Group 1 Buick Gmc North	Houston	A	90	$225	$199	10
11	Cavender Buick Gmc North	San Antonio	B	89	$225	$402	6
12	Cavender Buick Gmc West	San Antonio	B	88	$225	$398	10
13	Gunn Buick Gmc	Selma	B	88	$225	$547	8
14	Covert Chevrolet Buick Gmc	Austin	B	88	$225	$624	5
15	Toliver Brothers	Ballinger	B	88	$225	$699	4
16	Mckinney Buick Gmc	Mckinney	B	87	$225	$995	15
17	Covert Buick Gmc Austin	Austin	B	86	$225	$869	9
18	Sewell Buick Gmc	Dallas	B	86	$225	$495	8
19	Classic Buick Gmc Of Cleburne	Cleburne	B	85	$225	$571	7
20	Ancira Buick Gmc	Boerne	B	84	$225	$1,310	4

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.

---

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.