You can make your appointment using the Carmax online appointments scheduler or using a phone to talk to a real person from Carmax by dialling (800) 519-1511. Carmax enables you to have your appointment online from the comfort of your office or home or at any of its physical locations. You will receive an electronic confirmation for your Carmax appointment after you’ve completed the process to the email address or to the phone number that you have provided during this process.