Transparency Verdict
Bill Kay 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.
Limited confidence — based on 2 verified out-the-door quotes · Downers Grove, IL
Collected Dec 4, 2025 – Apr 3, 2026 · Updated Apr 28, 2026
Early read. The grade may shift as we log more deals here.
The full story
Why Bill Kay Buick GMC earned this grade
Between December 2025 and April 2026, CarEdge negotiated or logged 2 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 in line with the market
At $373, their doc fee sits at or just under the IL average. Not exceptional, but nothing to fight over.
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."
2 verified OTD quotes from Bill Kay 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
2 verified quotes
Most Common Add-ons
At a Glance
Tips for Bill Kay Buick GMC
- Expect ~$648 in add-ons. Items like "dealer accessories," paint protection, and theft deterrent are typically negotiable.
- Doc fee ($373) 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.
- Limited data (2 quotes). Score may change as we collect more information.
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 211 vehicles →$41,799
Median Price
83
Median Days Listed
17
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 Downers Grove have transparency scores based on verified pricing data.
Frequently Asked Questions
What is Bill Kay Buick GMC's doc fee?
Bill Kay Buick GMC charges a typical documentation fee of $373. The IL average is $326. This is based on 2 verified OTD quotes in our database.
Does Bill Kay Buick GMC add mandatory add-ons?
Bill Kay Buick GMC adds an average of $648 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 Bill Kay Buick GMC a good dealer?
Bill Kay Buick GMC has a transparency score of 86.6/100, earning a Grade B. This score is based on their doc fees, add-on behavior, dealer markup, and data quality from 2 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 Bill Kay Buick GMC in Downers Grove, IL, that has meant 2 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 B.
Doc Fee Comparison
Pulled 2 quote records · Grades update as new data comes in · Dealers cannot pay to change their score.
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