Applied through my university. Got a first-round screening interview that was a case question about credit cards and interest rates. A few days later, I got an e-mail asking me to complete an online personality test and a verbal/quantitative test, both of which were pretty straightforward. The next week, I got a set of three interviews in three hours (on campus). The first and third were quantitative case interviews and mathematical brain teasers. The second was a straightforward behavioral interview about past projects, teamwork, etc. I found it refreshing that Capital One's case interviews involve more number-crunching than case interviews at consulting firms. As someone with an engineering background, I find it irritating when an interviewer asks me to pull numbers out of the air. The Capital One interviewers would provide me with actual data to do math with, which was a welcome change from other case interviews that I've done.