Transparency Verdict
Tustin Buick GMC earns a D.
Proceed with caution.
High fees or frequent add-ons are a pattern here. Get every number in writing, line by line, before you give them your deposit.
Developing confidence — based on 9 verified out-the-door quotes · Costa Mesa, CA
Collected Sep 30, 2025 – Feb 6, 2026 · Updated Apr 27, 2026
The full story
Why Tustin Buick GMC earned this grade
Between September 2025 and February 2026, CarEdge negotiated or logged 9 verified deals with this dealership. We pulled the doc fee, the add-ons, and the gap between advertised and out-the-door price from each one. Then we graded them the way a friend in the business would: on the things that actually cost you money.
✓ What they do well
1 thingDoc fee is in line with the market
At $85, their doc fee sits at or just under the CA average. Not exceptional, but nothing to fight over.
! Where to push back
2 thingsAdd-ons are baked into almost every deal
100% of quotes include dealer add-ons, averaging $4,306. This is their business model — inflate the OTD, then hope you don't line-item it.
TipDemand an itemized quote before signing anything. Every add-on is optional — refuse them unless you actually want them.
The listing isn't quite the price
Quoted prices run about 6.7% above the advertised listing. On a $35,000 vehicle that's roughly $2,345 in extra fees or markup.
TipGet an OTD quote in writing before you visit. Compare it to the listing — if there's a gap, ask them to account for every line.
9 verified OTD quotes from Tustin Buick GMC
Real out-the-door worksheets, not reviews. Click “View Quote” on any row to see the price breakdown.
Recent Quotes
Verified out-the-door prices from real transactions
4 vehicle transactions — 9 individual quotes
Most Common Add-ons
At a Glance
Tips for Tustin Buick GMC
- This dealer often adds $4,306 in dealer add-ons. Request a quote WITHOUT any add-ons upfront. These are almost always removable.
- Doc fee ($85) is at or below national average. One less thing to negotiate.
- Dealer markup is only +7% above listing (excluding taxes). This dealer keeps their fees minimal.
Nearby Rated Dealers
These dealers near Costa Mesa have transparency scores based on verified pricing data.
Frequently Asked Questions
What is Tustin Buick GMC's doc fee?
Tustin Buick GMC charges a typical documentation fee of $85. The CA average is $84. This is based on 9 verified OTD quotes in our database.
Does Tustin Buick GMC add mandatory add-ons?
Tustin Buick GMC adds an average of $4,306 in dealer add-ons when present. Ask for an itemized breakdown and negotiate to remove non-essential items like paint protection, nitrogen tire fill, or VIN etching.
Is Tustin Buick GMC a good dealer?
Tustin Buick GMC has a transparency score of 63.7/100, earning a Grade D. This score is based on their doc fees, add-on behavior, dealer markup, and data quality from 9 verified OTD quotes. This is below average. Consider getting quotes from other dealers in the area for comparison.
How we know this
Every number on this page came from a real deal.
Most dealer review sites scrape star ratings and count angry posts. We do the opposite. CarEdge shops for cars alongside thousands of real buyers every week — and when we negotiate on their behalf, we capture the full out-the-door breakdown the dealer sends back.
For Tustin Buick GMC in Costa Mesa, CA, that has meant 9 verified OTD quotes logged into our database. Each one is a PDF, an email, or a screenshot showing the actual doc fee, the actual add-ons, and the actual final price — not a salesperson's promise.
Fee Transparency
30%Is the doc fee reasonable, or is it just profit? We compare it against the state average — and the legal cap, where one exists.
Add-on Behavior
30%How often does the dealer try to stick on paint protection, theft deterrent, or nitrogen tires? And when they do, how much do they cost you?
Price Accuracy
30%Does the advertised listing price match what you'd actually sign for? We flag dealers whose out-the-door diverges from the listing.
Data Quality
10%More data = more trustworthy grade. Dealers with lots of recent, complete quotes score higher for consistency.
The four numbers behind the grade
Weighted ScoreThe raw component scores — the math that led to D.
Doc Fee Comparison
Pulled 9 quote records · Grades update as new data comes in · Dealers cannot pay to change their score.
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