: If the issue is minor, they may recondition the car for their own lot. If the problem is major, they will likely buy the car and sell it at a dealer-only wholesale auction.

Selling to CarMax if maintenance light is on? - Bogleheads.org

They are known for making offers on almost any vehicle, regardless of its mechanical or cosmetic condition.

Here is how the process typically works when your car has a warning light: How It Affects Your Offer

: If you are getting an online offer, be sure to disclose the light. If you bring it in for an in-person appraisal and the light is on, their assessors will use an OBD-II scanner to pull the specific error codes to understand the severity of the problem. Should You Fix It First?

While CarMax will still buy the car, the check engine light (CEL) will likely lower the appraisal value.