The Kelley Blue Book tells you what a used car is worth based on its condition, mileage, and local market
The Kelley Blue Book (often called KBB) is a pricing guide that estimates what a used car should cost in your area. It does not set prices — dealers and private sellers do — but it gives you a number to compare against. You enter the car's year, make, model, mileage, and condition, and the tool shows you a range: what dealers typically charge, what private sellers ask, and what you might pay at auction. The site is free to use and does not require you to enter personal information.
The book started in 1926 as a printed price guide for car dealers. Today it is owned by Cox Automotive and runs as a website and mobile app. Millions of people use it before buying or selling a car because it removes some of the guesswork from a transaction where both sides have incomplete information.
Key Takeaways
- Kelley Blue Book shows you a range of prices for a specific car based on condition and mileage, not a single "correct" price.
- You can look up any used car for free on the website or app by entering the year, make, model, mileage, and condition.
- The tool separates prices by how you buy: dealer retail (highest), private party (middle), and trade-in (lowest).
- Local market matters — the same car costs different amounts in different regions, and KBB adjusts for that.
- Condition ratings (excellent, good, fair, poor) change the price significantly, so be honest about what you are looking at.
How to look up a car on Kelley Blue Book
Go to kbb.com or open the Kelley Blue Book app. On the home page, you will see a search box. Enter the year the car was made, then the make (Ford, Honda, Toyota), then the model (Civic, Camry, F-150). Next, enter the mileage and select the condition: Excellent, Good, Fair, or Poor.
The site will ask for your zip code so it can show prices for your region. Once you submit, you get a page with three price ranges side by side. The highest number is what a dealer would charge you (dealer retail). The middle number is what a private person would ask (private party). The lowest is what a dealer would give you if you traded the car in toward a new one (trade-in value).
You can also add details that affect price: whether the car has a clean title or a salvage title, the number of owners, accident history, and whether it has been regularly maintained. Each detail narrows the range and makes the estimate more specific to that particular car.
What the different price categories mean
Dealer retail is the price you see on a dealer's lot. It includes the dealer's markup, their overhead, and the warranty they usually offer. This is the highest of the three numbers.
Private party is what one person would pay another person for the same car. There is no dealer in the middle, so the price is lower than dealer retail. This is the price you would see on Craigslist, Facebook Marketplace, or from a neighbor selling their car.
Trade-in value is what a dealer will give you if you bring the car to them and want to trade it toward a new purchase. This is the lowest number because the dealer is buying it from you and will then resell it (often after repairs or detailing). Trade-in value is useful if you are getting rid of a car as part of buying another one.
Why condition matters so much to the price
Kelley Blue Book uses four condition ratings, and each one can shift the price by hundreds or thousands of dollars. Excellent means the car looks and runs like new, with no dents, stains, or mechanical issues. Good means normal wear for the age and mileage — maybe a small dent or worn seat, but nothing broken. Fair means visible damage: deep scratches, worn interior, or minor mechanical problems that still work. Poor means the car needs repair before it is safe to drive.
Be honest about condition when you look up a price. If you are buying, you want to know what a car in fair condition should cost so you do not overpay for one with dents and a check-engine light. If you are selling, overstating condition will give you an unrealistic asking price and your car will sit on the market.
How location changes the price
The same 2019 Honda Civic with 60,000 miles costs different amounts in rural Montana than it does in Los Angeles. Kelley Blue Book accounts for this by using your zip code to adjust prices based on local supply and demand. In areas where used cars are scarce, prices go up. In areas where many similar cars are for sale, prices go down.
This is why you should always enter your actual zip code, not a neighboring city or a national average. The price range you get is specific to your market and is much more useful for negotiating than a national number would be.
What Kelley Blue Book does not tell you
The tool gives you a price range, not a prediction of what a specific car will sell for. A car listed at $15,000 might sell for $14,200 if the seller is motivated, or it might not sell at all if the asking price is too high. The range is a starting point for comparison, not a may provide.
Kelley Blue Book also does not inspect the car or verify the seller's claims about its history. You still need to get a pre-purchase inspection from a mechanic, run a vehicle history report (through Carfax or AutoCheck), and test-drive the car yourself. The price estimate assumes the car is in the condition you selected, but only you can verify that.
The site does not show you individual listings or tell you which cars are actually for sale near you. For that, you need to search Autotrader, Cars.com, Facebook Marketplace, or dealer websites separately.
When to use Kelley Blue Book and when to look elsewhere
Use Kelley Blue Book when you are trying to understand the ballpark price for a car before you start shopping or negotiating. It is useful for both buyers and sellers because it gives both sides a neutral reference point.
If you are buying a car, use KBB to know what a fair price looks like, then search actual listings to see what cars in your area are actually priced at. If prices are consistently higher than KBB suggests, the market in your region is hot and you may need to pay more. If they are consistently lower, you have negotiating room.
If you are selling a car, use KBB to set a realistic asking price. Pricing too high means fewer inquiries and a longer time on the market. Pricing too low means you leave money on the table. The private party value is usually the right target for a private sale.
Frequently Asked Questions
Is Kelley Blue Book accurate?
It is accurate as a general range for your region, but individual cars vary. A well-maintained car with a clean history may be worth more than the estimate. A car with hidden problems or accident damage may be worth less. Use KBB as a starting point, not as the final word on what a car is worth.
Can I use Kelley Blue Book to value a classic or rare car?
KBB works best for common cars made in the last 15 to 20 years. For classic cars, collector vehicles, or rare models, you may need a specialist appraiser or a pricing guide focused on that type of car. KBB's database is largest for mainstream used vehicles.
Do dealers actually use Kelley Blue Book?
Many do, but dealers also use other pricing tools like NADA Guides and Manheim. Dealer prices are influenced by their own costs, their inventory, and what they think they can sell the car for locally. KBB is one input, not the only one.
What if the Kelley Blue Book price seems way off from what I see for sale?
Check that you entered the condition correctly and that you are looking at the right price category (dealer retail, private party, or trade-in). If you are comparing a dealer's asking price to private party value, they will not match. Also verify the mileage and any special features. If everything matches and the price still seems off, the market in your area may have shifted since KBB last updated.
Does Kelley Blue Book cost money?
No. Looking up prices on kbb.com and the mobile app is free. You do not need to create an account or enter a credit card. Some dealers and services pay Kelley Blue Book to use their data or branding, but that does not affect what you pay to use the tool yourself.