Best Buick Dealerships in San Antonio, Ranked by CarEdge Data

This is the CarEdge Dealer Transparency Index ranking for Buick dealers in the San Antonio metro. We graded every Buick 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 Buick dealers in San Antonio cleared the data threshold this quarter. It’s a smaller field — 2 more Buick 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 Buick Dealers in San Antonio

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

#1 — Gunn Buick Gmc

Grade: A · Score: 92/100 · Selma, TX

Gunn Buick Gmc is the top-graded Buick dealer in the San Antonio metro by verified data — A grade, 92/100, based on 11 verified OTD quotes.

• Doc fee: $225 — at the TX average
• Add-ons: 46% of quotes, avg $461
• Listing accuracy: 0.8% above the advertised listing
• Verified quotes: 11

See full review & verified quotes →

#2 — Cavender Buick Gmc West

Grade: A · Score: 90/100 · San Antonio, TX

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

• Doc fee: $113 — well below the TX average of $225
• Add-ons: 29% of quotes, avg $284
• Listing accuracy: Quoted price matches the advertised listing
• Verified quotes: 14

See full review & verified quotes →

#3 — Ancira Buick Gmc

Grade: B · Score: 88/100 · Boerne, TX

Ancira 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 50% of quotes (avg $1,345).

• Doc fee: $224 — below the TX average of $225
• Add-ons: 50% of quotes, avg $1,345
• Listing accuracy: 7.4% below the advertised listing
• Verified quotes: 4

See full review & verified quotes →

#4 — Cavender Buick Gmc North

Grade: B · Score: 83/100 · San Antonio, TX

Cavender Buick Gmc North averages $3,550 in add-ons when they appear (on 39% of verified quotes) — the steepest add-on cost on this list. Ask for an itemized OTD before signing.

• Doc fee: $208 — below the TX average of $225
• Add-ons: 39% of quotes, avg $3,550
• Listing accuracy: 1.6% below the advertised listing
• Verified quotes: 13

See full review & verified quotes →

Limited Data

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

• Beck & Beck Buick Gmc (Seguin, TX) — based on 3 verified OTD quotes. View dealer page
• South San Antonio Buick Gmc (San Antonio, TX) — based on 2 verified OTD quotes. View dealer page

San Antonio Buick Dealer Rankings at a Glance

#	Dealer	City	Grade	Score	Doc Fee	Add-Ons	Quotes
1	Gunn Buick Gmc	Selma	A	92	$225	$461	11
2	Cavender Buick Gmc West	San Antonio	A	90	$113	$284	14
3	Ancira Buick Gmc	Boerne	B	88	$224	$1,345	4
4	Cavender Buick Gmc North	San Antonio	B	83	$208	$3,550	13

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

Compare Buick Dealers in Other Metros

CarEdge has graded Buick dealers in 28 US metros using verified out-the-door quotes. Compare other markets:

• Best Buick Dealerships in Phoenix
• Best Buick Dealerships in Houston
• Best Buick Dealerships in Dallas-Fort Worth
• Best Buick Dealerships in Los Angeles
• Best Buick Dealerships in Chicago
• Best Buick Dealerships in Atlanta
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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. Data updated quarterly. Last updated: Q3 2026.