Transparency Verdict
Thompson Chevrolet Buick GMC earns a B.
Mostly honest. Stay alert.
Fair on the big stuff, but there are small things to watch. Read the out-the-door carefully before you sign.
Developing confidence — based on 6 verified out-the-door quotes and 1 tracked negotiation · Patterson, CA
Collected Apr 22, 2026 – Apr 23, 2026 · Updated Apr 24, 2026
Location
Patterson, CA
The full story
Why Thompson Chevrolet Buick GMC earned this grade
Between April 2026 and April 2026, CarEdge negotiated or logged 6 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
2 thingsDoc fee is genuinely reasonable
$0 is $100 below the CA average of $100. That's money you keep — most dealers in their market charge more.
The price you see is the price you get
Their quoted selling price almost exactly matches the advertised listing price. No mystery markup, no surprise "market adjustment."
! Where to push back
1 thingAdd-ons show up on most deals
50% of quotes include dealer add-ons, averaging $695. Expect them to try to include something — paint protection, nitrogen-filled tires, VIN etching.
TipNearly all aftermarket add-ons are optional and removable. Say "please take those off the quote" and watch the OTD drop.
6 verified OTD quotes from Thompson Chevrolet 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
1 vehicle transaction — 6 individual quotes
2026 Chevrolet Silverado 2500 HD
Most Common Add-ons
At a Glance
Tips for Thompson Chevrolet Buick GMC
- Minor add-ons (~$348) may appear. Ask what's included and if they can be removed.
- Doc fee ($0) is at or below national average. One less thing to negotiate.
- Dealer markup is about 4% below listing (excluding taxes). This dealer keeps fees very low.
On the lot right now
Separate from the grade above — this is what's currently listed. Useful for spotting aging stock with room to negotiate.
Current Inventory
View all 199 vehicles →$47,535
Median Price
50
Median Days Listed
16
Added This Week
Days on Market
How long vehicles have been listed. Older stock means more room to negotiate.
Frequently Asked Questions
What is Thompson Chevrolet Buick GMC's doc fee?
Thompson Chevrolet Buick GMC charges a typical documentation fee of $0. The CA average is $499. This is based on 6 verified OTD quotes in our database.
Does Thompson Chevrolet Buick GMC add mandatory add-ons?
Thompson Chevrolet Buick GMC adds an average of $348 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 Thompson Chevrolet Buick GMC a good dealer?
Thompson Chevrolet Buick GMC has a transparency score of 81/100, earning a Grade B. This score is based on their doc fees, add-on behavior, dealer markup, and data quality from 6 verified OTD quotes. This is a well-above-average score, indicating transparent pricing practices.
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 Thompson Chevrolet Buick GMC in Patterson, CA, that has meant 6 verified OTD quotes across 1 negotiated deals 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 B.
Doc Fee Comparison
Pulled 6 quote records · Grades update as new data comes in · Dealers cannot pay to change their score.
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