Best Buick Dealerships in Riverside-San Bernardino, Ranked by CarEdge Data

This is the CarEdge Dealer Transparency Index ranking for Buick dealers in the Riverside-San Bernardino 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.

6 Buick dealers in Riverside-San Bernardino currently clear the data threshold. Here’s how they rank.

Last updated November 3, 2026. CarEdge refreshes these rankings daily as new verified out-the-door quotes come in.

What is the best Buick dealer in Riverside-San Bernardino?

The best Buick dealer in Riverside-San Bernardino by verified out-the-door price data is Caposio Buick Gmc (Victorville, CA): A grade, 100/100 across 12 verified quotes, with no dealer add-ons in any verified quote.

Close behind:

2. Simpson Buick Gmc (Buena Park), A grade, 100/100 across 5 verified quotes, with no dealer add-ons in any verified quote.
3. Temecula Valley Buick Gmc (Temecula), A grade, 93/100 across 5 verified quotes, with quotes that match the advertised price.

Best for:

• Lowest doc fee: Caposio Buick Gmc (Victorville), $85.
• No dealer add-ons: Caposio Buick Gmc (Victorville), none in any of its 12 verified quotes.
• Selling price under the listing: Simpson Buick Gmc (Buena Park), quotes average 5.6% below the advertised price.
• Most verified quotes: Caposio Buick Gmc (Victorville), 12 verified quotes behind its A.

Among the A and B dealers ranked on this page.

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

Top 6 Buick Dealers in Riverside-San Bernardino

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

#1 — Caposio Buick Gmc

Grade: A · Score: 100/100 · Victorville, CA

Caposio Buick Gmc is the top-graded Buick dealer in the Riverside-San Bernardino metro by verified data — A grade, 100/100, based on 12 verified OTD quotes.

• Doc fee: $85 — at the CA average
• Add-ons: None detected in verified quotes
• Listing accuracy: 5.3% below the advertised listing
• Verified quotes: 12

See full review & verified quotes →

#2 — Simpson Buick Gmc

Grade: A · Score: 100/100 · Buena Park, CA

Simpson Buick Gmc quoted prices 5.6% below the advertised listing — the kind of discount that rewards getting the OTD in writing.

• Doc fee: $85 — at the CA average
• Add-ons: None detected in verified quotes
• Listing accuracy: 5.6% below the advertised listing
• Verified quotes: 5

See full review & verified quotes →

#3 — Temecula Valley Buick Gmc

Grade: A · Score: 93/100 · Temecula, CA

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

• Doc fee: $85 — at the CA average
• Add-ons: 20% of quotes, avg $650
• Listing accuracy: Quoted price matches the advertised listing
• Verified quotes: 5

See full review & verified quotes →

#4 — Hatfield Buick Gmc

Grade: A · Score: 90/100 · Redlands, CA

Add-ons showed on only 14% of Hatfield Buick Gmc’s verified quotes — restrained by segment standards.

• Doc fee: $85 — at the CA average
• Add-ons: 14% of quotes, avg $43
• Listing accuracy: 1.3% above the advertised listing
• Verified quotes: 7

See full review & verified quotes →

#5 — Tustin Buick Gmc

Grade: C · Score: 75/100 · Tustin, CA

Tustin Buick Gmc grades a C — add-ons appear on 88% of verified quotes, averaging $4,358. Ask for an itemized OTD before signing.

• Doc fee: $85 — at the CA average
• Add-ons: 88% of quotes, avg $4,358
• Listing accuracy: Quoted price matches the advertised listing
• Verified quotes: 8

See full review & verified quotes →

#6 — Hardin Buick Gmc

Grade: F · Score: 57/100 · Anaheim, CA

Hardin Buick Gmc is the lowest-graded Buick dealer in the Riverside-San Bernardino 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: 15% of quotes, avg $337
• Listing accuracy: 1.8% below the advertised listing
• Verified quotes: 13

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).

Riverside-San Bernardino Buick Dealer Rankings at a Glance

#	Dealer	City	Grade	Score	Doc Fee	Add-Ons	Quotes
1	Caposio Buick Gmc	Victorville	A	100	$85	$0	12
2	Simpson Buick Gmc	Buena Park	A	100	$85	$0	5
3	Temecula Valley Buick Gmc	Temecula	A	93	$85	$650	5
4	Hatfield Buick Gmc	Redlands	A	90	$85	$43	7
5	Tustin Buick Gmc	Tustin	C	75	$85	$4,358	8
6	Hardin Buick Gmc	Anaheim	F	57	—	$337	13

For the live list, including dealers graded since this page last updated, see the live Buick dealer rankings near Riverside-San Bernardino on the CarEdge Dealer Transparency Index.

Compare Buick Dealers in Other Metros

CarEdge has graded Buick dealers in 23 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 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.