Consulting Case Interview Practice

Crack your consulting case interview

Practice market sizing, profitability, and strategy cases with a voice AI that guides your framework and pushes back on weak logic — just like a McKinsey or BCG interviewer would.

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Consulting Case Interview
Interviewer
Our client is a European airline that has seen profits decline 30% over the last two years despite stable revenues. How would you approach this?
You
I'd start by confirming this is a cost problem rather than revenue. I'd break costs into fixed — aircraft, staff, leases — and variable — fuel, maintenance, handling. Then I'd ask whether costs have risen industry-wide or just for this client...
Interviewer
Good structure. Fuel costs are actually in line with competitors. Where would you look next?
Listening...

How it works

From signup to your first practice session in under two minutes.

1

Pick an interview type

Behavioral, technical, case, or role-specific — choose what you're preparing for.

2

Talk to your AI interviewer

Speak naturally. The AI listens, asks follow-ups, and responds just like a real interviewer.

3

Review your feedback

Get a detailed breakdown of your answers with scores, insights, and areas to improve.

Overall Score

82 / 100
Good
Communication 88
Structure 79
Specificity 74

Tip: Strong opening with clear context. Try adding measurable outcomes to strengthen your STAR answers.

Real feedback, not just a transcript

After every session you get a detailed breakdown — overall score, category ratings, and specific coaching tips to improve your next answer.

  • ✓ Scores across communication, structure, and specificity
  • ✓ Inline tips on where your answers were strong or weak
  • ✓ Full transcript to review exactly what you said

Case interview formats you need to master

Top consulting firms test the same core skills across different case types. Prepi covers them all.

Profitability Cases

Diagnose why a company's profits are falling — the most common case type at MBB and Big 4 firms.

Market Sizing

Estimate market sizes with structured reasoning and sensible assumptions — tested in most first-round interviews.

M&A & Strategy

Should a company acquire a competitor, enter a new market, or launch a new product? Practice structuring strategic recommendations.

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Any other case type

Operations, pricing, growth strategy, or firm-specific formats like BCG's written case — describe it and Prepi adapts.

Related interview guides

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