How We Detect Junk Fees: The FTC Rules Behind Every Flag
Learn exactly how QuoteDefender identifies junk fees. We follow FTC guidance and the Monroney Act—if it wasn't factory-installed, it's optional. See real examples with true costs vs dealer prices.
When QuoteDefender flags a fee as "junk," the definition is straightforward: if it costs extra and wasn't installed at the factory, it's optional — and you can decline it.
The detection logic, the legal basis behind every flag, and what that means for conclusions like VIN etching at $299 is a 1,000% markup on a $25 product.
65+
Fee Patterns
In Our Database
FTC
CARS Rule
Based Guidance
50
State Doc Limits
Tracked
100%
Transparent
No Dealer Ties
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The Core Principle: Factory vs. Dealer
Our detection logic rests on one simple, FTC-backed principle:
"If it costs extra and wasn't installed by the factory, it's optional."
— Based on FTC Combating Auto Retail Scams (CARS) Rule guidance
This isn't our opinion—it's the standard that regulators use to define dealer add-ons. The FTC CARS Rule specifically addresses "junk fees" as optional products that dealers charge for without meaningful consumer consent.
QuoteDefender applies this principle systematically:
Never Flagged
- • Factory-installed options (on Monroney sticker)
- • Destination/freight charge
- • Government fees (taxes, registration, title)
- • Manufacturer acquisition fee (leases)
- • Doc fee at or below state cap
Always Flagged
- • Market adjustment / ADM (pure markup)
- • Dealer-installed add-ons (not on Monroney)
- • Protection packages (paint, fabric, undercoat)
- • VIN etching, nitrogen fill, wheel locks
- • LoJack/GPS (when factory telematics exists)
The Monroney Sticker vs. Dealer Addendum
Every new car sold in the United States must display a Monroney sticker— a federally-mandated label showing the manufacturer's suggested retail price. This is required by the Automobile Information Disclosure Act of 1958 (15 U.S.C. § 1232).
The Two Stickers
- • Federally required by law
- • Shows MSRP set by manufacturer
- • Lists all factory-installed options
- • Includes destination charge
- • Everything here is legitimate
- • Added by the dealer
- • Shows dealer-installed items
- • Often includes "protection packages"
- • May include market adjustment
- • Everything here is negotiable
QuoteDefender's OCR Detection
When you upload a quote photo, our AI specifically looks for whether items appear on the factory Monroney sticker or a dealer addendum. Items from the addendum are automatically flagged as optional dealer add-ons.
How We Categorize Fees
Every fee in your quote is classified into one of these categories:
Dealer Add-ons to Remove
Products installed by the dealer with massive markups (typically 500-2000%). These are optional and should be declined. Examples: VIN etching, nitrogen fill, paint protection, fabric protection.
Action: Request removal. Say: "I'd like the vehicle as it came from the factory."
Market Adjustment / ADM
Pure dealer profit above MSRP with no product or service attached. This is the most egregious type of junk fee. Legal but always negotiable.
Action: Walk away if they won't remove. Many dealers sell at or below MSRP.
Potentially Overpriced
Fees that may be legitimate but are often inflated. Includes doc fees above state average and bundled "protection packages" that should be itemized.
Action: Ask for itemization. Compare to state limits.
Standard Fees
Industry-standard fees at reasonable amounts. Includes acquisition fees (manufacturer-set), doc fees at or below state cap, and destination charges.
Action: No action needed—these are normal costs.
Government Fees
Mandatory pass-through fees to government agencies. Includes registration, title, sales tax, license plates, and emissions/smog fees.
Action: Verify amounts match state requirements—not negotiable.
Common Junk Fees: Dealer Price vs. True Cost
Here's what dealers charge versus what these products actually cost. The markups speak for themselves:
| Fee | Dealer Price | True Cost | Markup |
|---|---|---|---|
| VIN Etching | $199-$499 | $20-$30 DIY | 1,000-2,000% |
| Nitrogen Tire Fill | $99-$299 | $0 (free at Costco) | ∞ |
| Paint Protection | $399-$1,499 | $50-$100 quality wax | 700-1,500% |
| Fabric Protection | $199-$499 | $10-$20 Scotchgard | 1,500-2,500% |
| Wheel Locks | $79-$199 | $25-$50 auto parts | 200-400% |
| Window Tint | $399-$899 | $150-$350 tint shop | 100-200% |
| LoJack/GPS | $695-$1,495 | $0-$30 (AirTag) | 1,000%+ |
| Dealer Prep/PDI | $199-$999 | $0 (paid via holdback) | ∞ |
| Market Adjustment | $1,000-$10,000 | $0 (pure profit) | ∞ |
Consumer Reports found no significant benefit to nitrogen tire fill for passenger vehicles—regular air is already 78% nitrogen. This is why we flag it as junk: there's no value proposition beyond dealer profit.
Government Fees We Never Flag
These are mandatory pass-through fees to government agencies. We never flag these as junk:
Our system maintains a whitelist of government fee patterns. If a fee matches government terminology (tax, registration, title, license, DMV, smog, inspection, etc.), it's automatically classified as legitimate and never flagged as junk.
Official Sources
Our fee classification system is built on these authoritative sources:
FTC Combating Auto Retail Scams (CARS) Rule
Federal Trade Commission rule addressing deceptive practices in motor vehicle sales, including junk fee disclosure requirements.
Automobile Information Disclosure Act (Monroney Act)
Federal law (15 U.S.C. § 1232) requiring new car dealers to display a window sticker showing the manufacturer's suggested retail price.
Consumer Reports Auto Research
Independent testing and research on automotive products, including studies on add-on value (nitrogen tire fill, paint protection, etc.).
How This Affects Your Score
Junk fees are one of 5 factors in your QuoteDefender score. Detected junk fees reduce your score and are flagged for negotiation. Learn about all scoring factors:
Summary: Our Detection Philosophy
- 1.Monroney = Legitimate. If it's on the factory window sticker, it's never flagged.
- 2.Addendum = Optional. Dealer-installed items are negotiable by definition.
- 3.Government = Protected. Taxes, registration, and DMV fees are never flagged.
- 4.FTC-Backed. Our logic follows federal regulatory guidance on optional products.
- 5.No Dealer Ties. We have no affiliation with any dealership or manufacturer.
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