First round consisted of one on campus interview with mostly fit questions and some behavioral. There is also one case question. The interviewer is just gauging to see whether you're interested in the company/job position and comfortable enough with numbers to make the next round. When you make it to final round, CarMax will give you a HBS case and several articles. You do NOT have to prepare a discussion about this case. This is just them selling themselves and a great way to show u did your research (definitely read the material). Final round is at CarMax's home office and consists of several interviews all of which are both behavioral fit and case as well (except for the last one which is used to wrap things up). During down time there will be some personality tests, drug test, and lunch with other analysts.