Transparency Verdict
Napleton Buick GMC Crystal Lake earns an A.
One of the good ones.
You can walk in here with confidence. Fees are reasonable, add-ons are rare, and the final number usually matches the listing.
Developing confidence — based on 7 verified out-the-door quotes and 2 tracked negotiations · Crystal Lake, IL
Collected Nov 24, 2025 – Jun 9, 2026 · Updated Jul 25, 2026
One of the dealers buyers can trust.
Napleton Buick Gmc Crystal Lake qualifies for the CarEdge Certified license — an A-grade transparency score of 100/100 from 7 verified out-the-door quotes.
The full story
Why Napleton Buick GMC Crystal Lake earned this grade
Between November 2025 and June 2026, CarEdge negotiated or logged 7 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 thingsNo dealer add-ons detected
Across 7 recent quotes, we haven't seen a single "dealer accessory," "paint protection," or "theft deterrent" line item. That is rare, and it is good.
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 thingDoc fee is slightly padded
$374 is $3 above the IL average of $371. Not outrageous, but worth questioning.
TipAsk them to match the average. If they won't, factor it into your overall price — every dollar here is negotiable.
7 verified OTD quotes from Napleton Buick GMC Crystal Lake
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
2 vehicle transactions — 7 individual quotes
2026 GMC SIERRA 1500
At a Glance
Tips for Napleton Buick GMC Crystal Lake
- A-rated dealer! Focus on vehicle price negotiation—fees are already competitive.
- Doc fee ($374) is at or below national average. One less thing to negotiate.
- This dealer typically doesn't add mandatory dealer add-ons. That's a good sign of transparency.
- Dealer markup is about 10% below listing (excluding taxes). This dealer keeps fees very low.
Keep researching
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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 138 vehicles →$40,833
Median Price
63
Median Days Listed
8
Added This Week
Days on Market
How long vehicles have been listed. Older stock means more room to negotiate.
Nearby Rated Dealers
These dealers near Crystal Lake have transparency scores based on verified pricing data.
Frequently Asked Questions
What fees does Napleton Buick GMC Crystal Lake charge?
Based on 7 verified out-the-door quotes collected by CarEdge, Napleton Buick GMC Crystal Lake charges a $374 documentation fee and typically adds no mandatory dealer add-ons. Napleton Buick GMC Crystal Lake earns Transparency Grade A (99.9/100).
What is Napleton Buick GMC Crystal Lake's doc fee?
Napleton Buick GMC Crystal Lake charges a typical documentation fee of $374. The IL average is $371. This is based on 7 verified OTD quotes in our database.
Does Napleton Buick GMC Crystal Lake add mandatory add-ons?
Based on our data, Napleton Buick GMC Crystal Lake does not typically add mandatory dealer add-ons to their quotes. This is a positive sign for buyers.
Is Napleton Buick GMC Crystal Lake a good dealer?
Napleton Buick GMC Crystal Lake has a transparency score of 99.9/100, earning a Grade A. This score is based on their doc fees, add-on behavior, dealer markup, and data quality from 7 verified OTD quotes. This is a well-above-average score, indicating transparent pricing practices.
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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 Napleton Buick GMC Crystal Lake in Crystal Lake, IL, that has meant 7 verified OTD quotes across 2 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 A.
Doc Fee Comparison
Pulled 7 quote records · Grades update as new data comes in · Dealers cannot pay to change their score.
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