Best GMC Dealerships in Los Angeles, Ranked by CarEdge Data
Key Takeaways
- 7 GMC dealers in Los Angeles graded using verified out-the-door quotes — not Google star ratings.
- Penske Buick Gmc is the highest-graded GMC dealer in the Los Angeles metro.
- Tustin Buick Gmc earns the lowest grade — add-ons appear on 86% of verified quotes, averaging $4,298.
- Get an OTD quote in writing before you visit any dealer. CarEdge tracks real prices, not advertised ones.
This is the CarEdge Dealer Transparency Index ranking for GMC dealers in the Los Angeles 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.
7 GMC dealers in Los Angeles currently clear the data threshold. Here’s how they rank.
Last updated October 1, 2026. CarEdge refreshes these rankings daily as new verified out-the-door quotes come in.
The Best GMC Dealers in Los Angeles
The best GMC dealer in Los Angeles by verified out-the-door price data is Penske Buick Gmc (Cerritos, CA): A grade, 100/100 across 6 verified quotes, with no dealer add-ons in any verified quote.
Close behind:
- Simpson Buick Gmc (Buena Park), A grade, 100/100 across 4 verified quotes, with no dealer add-ons in any verified quote.
- Magic Gmc Cadillac (Santa Clarita), A grade, 95/100 across 7 verified quotes, with a $85 doc fee, under the CA average of $110.
Full ranking, fees and add-on data for every graded dealer are below.
Top 7 GMC Dealers in Los Angeles
Ranked by CarEdge transparency score, highest to lowest. Each dealer profile links to the full review with verified out-the-door quotes.
#1 — Penske Buick Gmc
Grade: A · Score: 100/100 · Cerritos, CA
Penske Buick Gmc is the top-graded GMC dealer in the Los Angeles metro by verified data — A grade, 100/100, based on 6 verified OTD quotes.
- Doc fee: $85 — well below the CA average of $110
- Add-ons: None detected in verified quotes
- Listing accuracy: 1.6% below the advertised listing
- Verified quotes: 6
See full review & verified quotes →
#2 — Simpson Buick Gmc
Grade: A · Score: 100/100 · Buena Park, CA
Simpson Buick Gmc quoted prices 7.1% below the advertised listing — the kind of discount that rewards getting the OTD in writing.
- Doc fee: $85 — well below the CA average of $110
- Add-ons: None detected in verified quotes
- Listing accuracy: 7.1% below the advertised listing
- Verified quotes: 4
See full review & verified quotes →
#3 — Magic Gmc Cadillac
Grade: A · Score: 95/100 · Santa Clarita, CA
Magic Gmc Cadillac keeps add-ons on just 14% of verified quotes — light for an A-grade dealer.
- Doc fee: $85 — well below the CA average of $110
- Add-ons: 14% of quotes, avg $297
- Listing accuracy: 1.4% below the advertised listing
- Verified quotes: 7
See full review & verified quotes →
#4 — Hardin Buick Gmc
Grade: A · Score: 90/100 · Anaheim, CA
Add-ons showed on only 8% of Hardin Buick Gmc’s verified quotes — restrained by segment standards.
- Doc fee: $130 — above the CA average of $110
- Add-ons: 8% of quotes, avg $307
- Listing accuracy: 1.5% above the advertised listing
- Verified quotes: 12
See full review & verified quotes →
#5 — Costa Mesa Gmc
Grade: B · Score: 88/100 · Costa Mesa, CA
Costa Mesa Gmc earns a solid B on verified data — a doc fee at or below the CA average. The one watch-out: add-ons show on 50% of quotes (avg $710).
- Doc fee: $85 — well below the CA average of $110
- Add-ons: 50% of quotes, avg $710
- Listing accuracy: 5.5% below the advertised listing
- Verified quotes: 8
See full review & verified quotes →
#6 — Alexander Gmc Of Simi Valley
Grade: B · Score: 84/100 · Simi Valley, CA
Alexander Gmc Of Simi Valley grades a B: a doc fee at or below the CA average, but add-ons show on 46% of quotes (avg $1,106) — ask for an itemized OTD.
- Doc fee: $85 — well below the CA average of $110
- Add-ons: 46% of quotes, avg $1,106
- Listing accuracy: 2.2% above the advertised listing
- Verified quotes: 11
See full review & verified quotes →
#7 — Tustin Buick Gmc
Grade: D · Score: 65/100 · Tustin, CA
Tustin Buick Gmc carries the heaviest warnings on this list — add-ons appear on 86% of verified quotes, averaging $4,298, and quoted prices run 7.2% above the advertised listing. Anchor to the OTD, not the sticker.
- Doc fee: $85 — well below the CA average of $110
- Add-ons: 86% of quotes, avg $4,298
- Listing accuracy: 7.2% above the advertised listing
- Verified quotes: 7
See full review & verified quotes →
Limited Data
These GMC dealers in the Los Angeles metro have verified OTD data, but not yet enough to assign a confident grade. We’re actively collecting more quotes for these dealers.
- Penske Cadillac Buick Gmc South Bay (Torrance, CA) — based on 2 verified OTD quotes. View dealer page
- Av Gmc (Palmdale, CA) — based on 1 verified OTD quote. View dealer page
- Dutton Buick Gmc (Riverside, CA) — based on 1 verified OTD quote. View dealer page
- Parkway Buick Gmc (Santa Clarita, CA) — based on 1 verified OTD quote. View dealer page
- Boulevard Buick/Gmc (Signal Hill, CA) — based on 3 verified OTD quotes. View dealer page
- Swickard Buick Gmc Of Thousand Oaks (Westlake Village, CA) — based on 2 verified OTD quotes. View dealer page
- Laguna Niguel Gmc (Laguna Niguel, CA) — based on 1 verified OTD quote. View dealer page
- Thorson Buick Gmc (Pasadena, CA) — based on 2 verified OTD quotes. View dealer page
- Av Gmc Cadillac (Palmdale, CA) — based on 1 verified OTD quote. View dealer page
- Santa Monica Gmc Inc (Santa Monica, CA) — based on 1 verified OTD quote. View dealer page
- Buick Gmc Sherman Oaks (Los Angeles, CA) — based on 0 verified OTD quotes. View dealer page
- Cerritos Auto Square (Cerritos, CA) — based on 0 verified OTD quotes. View dealer page
- Mark Christopher Auto Center (Ontario, CA) — based on 0 verified OTD quotes. View dealer page
- Palmdale Auto Mall (Palmdale, CA) — based on 0 verified OTD quotes. 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).
Los Angeles GMC Dealer Rankings at a Glance
| # | Dealer | City | Grade | Score | Doc Fee | Add-Ons | Quotes |
|---|---|---|---|---|---|---|---|
| 1 | Penske Buick Gmc | Cerritos | A | 100 | $85 | $0 | 6 |
| 2 | Simpson Buick Gmc | Buena Park | A | 100 | $85 | $0 | 4 |
| 3 | Magic Gmc Cadillac | Santa Clarita | A | 95 | $85 | $297 | 7 |
| 4 | Hardin Buick Gmc | Anaheim | A | 90 | $130 | $307 | 12 |
| 5 | Costa Mesa Gmc | Costa Mesa | B | 88 | $85 | $710 | 8 |
| 6 | Alexander Gmc Of Simi Valley | Simi Valley | B | 84 | $85 | $1,106 | 11 |
| 7 | Tustin Buick Gmc | Tustin | D | 65 | $85 | $4,298 | 7 |
For the live list, including dealers graded since this page last updated, see the live GMC dealer rankings near Los Angeles 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
- 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.
- 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.
- 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.
- 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.
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