Mars & Co Associate Consultant interview questions

There were three rounds. The first was a 30-minute phone interview with typical fit questions. The next one was a set of in-person interviews consisting of back to back 45-minute meetings with an Associate Consultant and then a Senior Consultant. Each of these interviews contained fit questions and one case. The final round was another set of in-person interviews: this time three back-to-back interviews with a Project Manager and then two Senior Vice-Presidents. They asked fit, brain-teaser, and case questions. Two consultants also took me to lunch before my final-round interviews. Case questions consisted primarily (but not solely) of market sizing. One of the interviewers really challenged my process at a couple of points but every other interviewer was simply supportive throughout the whole thing. The Senior Vice-Presidents that I met with were especially warm and friendly. Communication and coordination with HR was quick and smooth throughout the entire process.

Two back to back interviews. Each asked a few "tell me about a time" questions followed by a case.