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The bottom line: CarMax buys your car at one of their 250+ locations or through at-home pickup, with same-day payment by check. However, that check takes 5 to 10 business days to clear your bank, and many sellers say the final in-store offer drops from the online quote.
KBB’s Instant Cash Offer connects you to multiple participating dealers, which can mean more options. However, expect dealer calls soon after you submit your info, and many reviewers report the quoted price going down during inspection.
We tested both with three vehicles in January 2026. KBB offered more on all three, from $100 more on a 2021 Toyota RAV4 to $2,030 more on a 2022 Ford F-150.
Based on our results, go with KBB if you want the highest offer and don’t mind visiting a dealer and dealing with follow-up contact. Choose CarMax if you value a simple, no-pressure process and can wait for the check to clear.
Neither service works well for cars with salvage titles, frame damage, or flood damage.
Compare offers from multiple services with Sell Car Advisor before deciding.
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CarMax vs. KBB Offers
We requested quotes from both companies for several vehicles. Here’s what each one offered:
2026
| Vehicle |
|
|
Winner |
|---|---|---|---|
| 2018 Tesla Model 3 | $11,400 | $13,156 | KBB +$1,756 |
| 2022 Ford F-150 XL | $18,400 | $20,430 | KBB +$2,030 |
| 2021 Toyota RAV4 Prime SE | $22,400 | $22,500 | KBB +$100 |
2018 Tesla Model 3 with 73k miles and clean title:
2022 Ford F-150 XL with 72.5k miles and clean title:
2021 Toyota RAV4 Prime SE with 61.5k miles and clean title:
CarMax vs. KBB: Detailed Comparison
Both CarMax and KBB quotes last 7 days. CarMax gives you one offer from their own team, while KBB’s Instant Cash Offer sends your info to participating dealers who each set their own price. This means KBB can give you more options, but it also means your phone starts ringing pretty fast.
CarMax now offers at-home pickup in most areas (since November 2025), so you don’t have to drive to a store. They also have an express drop-off option that can wrap things up in under 30 minutes. KBB always requires visiting a dealer in person, and there’s no at-home option.
In our January 2026 tests, KBB offered more on all three vehicles. The biggest gap was on the 2022 Ford F-150, where KBB offered $20,430 compared to CarMax’s $18,400. Even on the 2021 Toyota RAV4, where the gap was smallest, KBB still came in $100 higher at $22,500.
Here are some key differences to keep in mind:
- CarMax offers at-home pickup; KBB requires visiting a dealer
- CarMax pays by check only (5 to 10 day bank hold); KBB payment varies by dealer
- CarMax doesn’t share your contact info; KBB sends it to multiple dealers
- CarMax won’t buy salvage titles or cars with frame damage; KBB depends on the dealer
CarMax does a thorough 30 to 45 minute check at their location, looking at everything from tire tread to electronics. KBB dealers inspect cars too, but the process and strictness varies depending on which dealer you visit.
If you’re selling a financed car, both handle loan payoffs. CarMax pays the lender directly but it can take up to 18 days. KBB dealers handle it too, though the timeline depends on the dealer.
Neither service charges seller fees, but some KBB dealers add processing or certification costs that aren’t in the online quote.
CarMax vs. KBB: Feature Comparison
Where to Sell Your Car
KBB offered more on all three vehicles in our tests, with the gap ranging from $100 on the RAV4 to $2,030 on the F-150. If getting the highest possible quote matters most, KBB is the stronger starting point for newer, clean-title cars.
CarMax makes more sense if you want a fast, no-pressure experience. There’s no dealer shopping, no follow-up calls, and their at-home pickup means you don’t even need to leave home. You’ll trade some money for that convenience.
Your car’s condition matters here. Both services focus on newer vehicles in decent shape. If your car has major damage, high mileage, or a salvage title, check other online car buyers for better options.
| Your Situation | Better Option | Why? |
|---|---|---|
| Want the highest offer for a newer car |
|
KBB offered more on all 3 vehicles in our tests |
| Want a fast, no-pressure sale |
|
One location, same-day payment, no sales pressure |
| Don’t want follow-up calls or texts |
|
CarMax doesn’t share your info; KBB dealers may contact you right away |
| Want to compare multiple dealer offers |
|
KBB connects you to multiple dealers; CarMax is a single offer |
| Need at-home pickup |
|
CarMax picks up from your home in most areas; KBB requires a dealer visit |
| Selling a truck |
|
KBB offered $2,030 more on the F-150 in our test |
| Have a car with an outstanding loan |
|
CarMax has a clear payoff process; KBB dealer experience varies |
| Salvage title, frame damage, or flood damage | Neither | CarMax won’t buy these; KBB dealers usually won’t either. Try Peddle or Wheelzy |
Best Alternatives
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Want to compare more options? Use our free tool to see who offers the most for your car:
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Frequently Asked Questions
Which service offers more, CarMax or KBB?
In our January 2026 tests, KBB offered more on all three vehicles. KBB offered $13,156 for the Tesla Model 3 (CarMax offered $11,400), $20,430 for the Ford F-150 (CarMax offered $18,400), and $22,500 for the Toyota RAV4 (CarMax offered $22,400).
The gap ranged from $100 to $2,030. Keep in mind these are online quotes. Final offers from both services can change after inspection.
How long do CarMax and KBB quotes last?
Both last 7 days. CarMax quotes are good at any of their locations, and you can also use the at-home pickup option during that window.
KBB quotes are tied to participating dealers. While dealers are supposed to honor them if your car matches what you described, some reviewers report the price going down during inspection anyway.
Which has better customer reviews, CarMax or KBB?
Both have low ratings. CarMax has 2 stars on Trustpilot from 545 reviews, and is not BBB accredited. Reviews vary a lot by location.
KBB has 1.3 stars on Trustpilot from 244 reviews and 4.1 stars on Google from 123 reviews. KBB is not BBB accredited. Common complaints include dealer price reductions and frequent contact after submitting info.
Note that reviews for both include car buyers, not just sellers.
Which is faster, CarMax or KBB?
CarMax can finish everything in 30 minutes with their express drop-off. On busy days, the full process can stretch to 4 hours including wait time. You get paid the same day by check.
KBB takes about 1 to 2 hours at the dealership. But you’ll spend extra time beforehand getting quotes, receiving dealer calls, and possibly visiting multiple locations. If you just want it done in one trip, CarMax is faster.
How do CarMax and KBB handle payment?
CarMax pays by company check only. You have to deposit it at your bank, and most banks hold CarMax checks for 5 to 10 business days before you get full access to the money.
KBB dealers handle payment differently depending on the location. Some offer direct deposit, others use checks. You won’t know the payment method until you visit the dealer.
Can I negotiate with CarMax or KBB dealers?
CarMax offers are mostly firm, but some sellers have gotten a few hundred dollars more by showing competing quotes or asking for a manager. Don’t expect big jumps.
KBB dealers are traditional dealerships, so negotiation is possible. However, they often treat the KBB quote as a ceiling rather than a starting point. Bringing maintenance records and competing offers can help with both.
What if I still owe money on my car?
Both CarMax and KBB dealers buy cars with loans. CarMax pays the lender directly, but this can take up to 18 days. Keep making your loan payments until the payoff goes through to avoid credit issues.
KBB dealers handle loan payoffs too, though the process and timeline depend on the dealer. Either way, if you owe more than the car is worth, you’ll need to cover the difference.
Learn more: Car Buying Companies that Will Pay Off Your Auto Loan
Can I sell a damaged or modified car to CarMax or KBB?
CarMax buys most cars but offers a lot less for modified or damaged vehicles. They won’t buy cars with salvage titles, frame damage, or flood damage.
KBB dealers have varying policies. Some won’t touch modified cars, others will. For heavily damaged vehicles, you’ll likely get better offers from companies like Peddle or Wheelzy that focus on damaged cars.
What about the dealer phone calls with KBB?
This is one of the most common complaints about KBB’s Instant Cash Offer. Once you submit your info, multiple dealers may contact you quickly through calls, texts, and emails.
Many sellers describe it as overwhelming, and there’s no easy way to stop it once you’ve started. CarMax doesn’t do this. They just wait for you to come in or schedule an at-home pickup.
Do CarMax and KBB honor their online quotes?
Neither service’s online quote should be treated as a final offer. CarMax often shows a price range, and the final number may land at the lower end after their 30 to 45 minute inspection.
KBB’s Instant Cash Offer is supposed to be more fixed, but dealers can adjust it during inspection. For both services, expect the online quote to be a starting point that might change 5 to 15% after the in-person check.
What documents do I need for CarMax or KBB?
For CarMax, bring your title (or loan payoff info), valid driver’s license, registration, all keys and remotes, and proof of insurance. If multiple people are on the title, everyone needs to be there.
KBB requires similar documents plus your Instant Cash Offer certificate. Specific requirements can vary by dealer, so call ahead to confirm what your chosen dealer needs.
Learn more: Selling a Car to Online Buyers (The Paperwork Checklist)
Article Update History
We got new quotes from both services for three vehicles (a 2018 Tesla Model 3, 2022 Ford F-150, and 2021 Toyota RAV4) and verified customer ratings on Trustpilot, Google, and BBB. CarMax launched at-home pickup nationwide in November 2025 and added a new Offer Watch tool for tracking your car's value over time. Outside of that, how both services buy cars from sellers remains unchanged since 2025. KBB's Instant Cash Offer still works through participating dealers with 7-day quote offers.
Originally posted and shared with our readers.