KBB vs. Edmunds: Which Is More Accurate?
Neither is consistently more accurate. Kelley Blue Book and Edmunds both publish modeled estimates from market data, and for most cars they land close together. KBB says its values come from actual market transactions, adjusted for your ZIP code, mileage, equipment and condition; Edmunds' Suggested Price (formerly True Market Value) is its estimate of what to pay before taxes and fees. Which is closer depends on whether you're buying, selling or trading in. Use both as a cross-check, then know what to pay from real prices: what buyers actually paid for that model on CarWhere's What People Paid, live asking prices for the same car near you, and written offers.
By Sam Reynolds, Lead Researcher, CarWhere · Updated November 2026. Each company's methodology is described from its own pages, as of November 2026. CarWhere is not affiliated with Kelley Blue Book, Edmunds or J.D. Power.
KBB vs. Edmunds vs. CarWhere at a glance
| What it estimates | Data basis (per its own description) | Best use | |
|---|---|---|---|
| Kelley Blue Book | Trade-In Value, Private Party Value and Fair Purchase Price (what buyers are paying for a specific car) | “Actual transactions in the market,” including dealer-reported transactions, adjusted for ZIP, age, mileage, equipment and condition; updated weekly (KBB, KBB) | A quick reference for each type of deal, especially private-party and trade-in ranges |
| Edmunds | Edmunds Suggested Price (formerly True Market Value, TMV): what to pay before taxes and fees; plus trade-in and private-party appraisals | Edmunds' analysis of market data, including dealer sales in your area (Edmunds help center, Edmunds) | A second estimate to check against KBB before you shop |
| CarWhere | Not a book value. Shows what verified buyers paid for new cars, and live asking prices for used cars | New: prices verified buyers paid, with sample size, average discount and target discount off MSRP before rebates. Used: live dealer listings from licensed vehicle-data providers (asking prices, not sale prices) | Deciding what to pay for a specific model, trim and mileage, then judging a dealer quote |
Where KBB and Edmunds disagree on a specific car, the gap is a useful signal: both are estimates with error bars. For more on where book values drift, see how accurate KBB is and KBB value vs. what buyers actually paid.
Which is more accurate depends on the job
- Buying from a dealer. KBB's Fair Purchase Price and the Edmunds Suggested Price both estimate what buyers pay. Neither includes taxes, fees or dealer add-ons, and neither is a price a dealer has agreed to.
- Trading in. KBB defines Trade-In Value as “what you can expect to receive for your current car when trading it in at a dealer” (KBB). Dealers appraise against wholesale guides, which our guide to what dealers use instead of KBB covers. The accurate trade-in number is a written offer.
- Selling privately. KBB's Private Party Value is “what a buyer can expect to pay when buying a used car from a private party” (KBB). Local asking prices for the same model and mileage show what buyers will compare yours against.
- Condition. Both tools rely on the condition you select. KBB notes that most cars it sees are in “Good” condition (KBB), so picking a higher grade moves the estimate before any market data does.
The terms behind each number are explained in Blue Book value, explained.
How to know what to pay (not just what a guide says)
A guide value tells you the neighborhood. These steps get you to a number for the exact car in front of you.
- New car: check what people actually paid. What People Paid shows the prices verified buyers paid for a new model by make, model and year, with the number of deals behind each figure, the average discount off MSRP, and a target discount: the discount the stronger negotiators in that sample reached. Prices are before rebates, taxes and fees. Apply the target percent to the MSRP of the exact trim you're pricing to get a target selling price, then compare each dealer's itemized quote against it.
- Used car: estimate, then compare live listings. The CarWhere car value tool takes a VIN, plate or year/make/model with mileage and ZIP. It pulls comparable dealer listings for the same year, make, model and trim (when known) within about 100 miles, adjusts each to your mileage, and shows the middle half of that market as a dealer retail range, with the number of listings used. Its trade-in and private-party figures are modeled from that range. Then check used car prices by model (median and middle-50% asking prices from dealer listings) and search live inventory with prices on CarWhere Shop for the same model, trim and mileage. These are asking prices, not sale prices: use them to see where a dealer's quote sits in the local market.
- Get real offers. Ask more than one dealer for a written, itemized price, and for a trade-in, get two or three firm offers on the same day. An offer is the only number anyone is bound to.
KBB vs. Edmunds: FAQ
Is KBB or Edmunds more accurate?
Neither is consistently more accurate. Both are modeled estimates built from market data, and for most mainstream cars they land close together. Which one sits closer to reality depends on the job: buying from a dealer, selling privately or trading in. Use both as a cross-check, then decide what to pay from evidence of real prices: what buyers actually paid for that model (new cars), live asking prices for the same model, trim and mileage near you (used cars), and written offers.
Which is more accurate for trade-in value?
Neither predicts a specific dealer offer. KBB defines Trade-In Value as what you can expect to receive when trading in at a dealer, and Edmunds publishes its own trade-in appraisal; both are estimates. Dealers appraise trades against wholesale auction guides and their own resale plans, so the most accurate trade-in number is a firm written offer. Get two or three on the same day, such as instant cash offers or dealer appraisals, and compare them with the estimates.
What is Edmunds True Market Value (TMV)?
True Market Value (TMV) was Edmunds’ name for its estimate of what buyers pay for a car. Edmunds now calls it the Edmunds Suggested Price, which its help center describes as its estimate of what you should pay before taxes and fees. Edmunds says its values draw on market data including dealer sales in your area. It is an estimate, not a price a dealer has agreed to.
What is KBB Fair Purchase Price?
Kelley Blue Book says its Fair Purchase Price “indicates what buyers are paying for a specific car,” based on reported transaction information from dealers across the country and in part on transactions in your area. KBB says the values on its website are updated weekly. It is a modeled average, so a given dealer can sell above or below it, and it does not include taxes, fees or add-ons.
Why is the dealer’s offer lower than KBB?
A dealer has to recondition, hold and resell your car at a profit, so it appraises off wholesale values, not the consumer number you looked up. The condition you picked online may also be a grade higher than the appraisal finds. Our guide to why a dealer offer comes in under KBB explains the gap and how to get a better number.
How do I know what to pay for a car?
Use real prices instead of a single guide value. For a new car, check what verified buyers paid for that model and year on CarWhere’s What People Paid pages, including the average and target discount off MSRP before rebates. For a used car, estimate the dealer retail range with CarWhere’s free car value tool, then compare live asking prices for the same model, trim and mileage. Then get written, itemized offers from more than one dealer.
Is NADA (J.D. Power) more accurate than KBB?
Not more accurate, just different. NADA Guides is now J.D. Power Valuation Services, which publishes an official used car guide with trade-in (rough, average and clean), loan and retail values, used by dealers, banks and credit unions. Lenders often use it to set loan values, which is why it shows up in financing. Like KBB and Edmunds, it is an estimate; real comparable prices and written offers settle the number.
More on the trade-in gap: why the dealer's offer is lower than KBB.
Sources
- Kelley Blue Book: values FAQ (“analyzing actual transactions in the market”; Trade-In and Private Party definitions; ZIP, age, mileage, equipment, condition)
- Kelley Blue Book: What is Blue Book value? (Fair Purchase Price definition; dealer-reported transactions; updated weekly)
- Kelley Blue Book: About us (“based in part on transactions in your area”)
- Edmunds help center: What is Edmunds Suggested Price? (estimate of what to pay before taxes and fees; replaces True Market Value (TMV))
- Edmunds: car appraisal (appraisal inputs including actual dealer sales and consumer information)
- J.D. Power Valuation Services: official used car guide (formerly NADA Used Car Guide; value types; users)
- CarWhere verified buyer-paid prices and market data from licensed vehicle-data providers
Accessed November 2026. Company names are trademarks of their owners; CarWhere is not affiliated with any company named on this page.