Practice With Over 200 Cases on Various Topics
Learn the case interview basics, practice with 200+ cases, and benefit from extensive test materials, and interactive self-study tools.
Your client, a private equity fund, is considering entry into the wine business through the acquisition of a vineyard called “Piumarolo” in Italy's renowned Piedmont region. Since this marks the fund's initial foray into this specific sector, they have engaged our team to conduct a preliminary marke
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Your client, a private equity fund, is considering entry into the wine business through the acquisition of a vineyard called “Piumarolo” in Italy's renowned Piedmont region. Since this marks
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(Open whole case)
1.2k
Times solved
Beginner
Difficulty
Style:
We are an airline major operating out of India. We want to increase the number of passengers on all our flights. Could you please calculate the financial return of adding one more passenger per flight?
We are an airline major operating out of India. We want to increase the number of passengers on all our flights. Could you please calculate the financial return of adding one more passenger per flight?
(Open whole case)
17.8k
Times solved
Intermediate
Difficulty
Style:
Dubai Airport has decided to counter the chaos in the airport taxi service by commencing a bidding process to assign airport taxi services to 3 operators only. After years of cheating passengers, black-market drivers and unlicensed cabs, the airport has had enough of the problems and is now taking a
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Dubai Airport has decided to counter the chaos in the airport taxi service by commencing a bidding process to assign airport taxi services to 3 operators only. After years of cheating passen
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(Open whole case)
33.8k
Times solved
Intermediate
Difficulty
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Style:
If you have ever been in Bangkok, you would have noticed these motorcycles transporting people from A to B as an alternative means of transportation. These motorcycles typically transport people on short distances such as nearby train stations, supermarkets or food stalls.Your job is to estimat
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If you have ever been in Bangkok, you would have noticed these motorcycles transporting people from A to B as an alternative means of transportation. These motorcycles typically transpo
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(Open whole case)
7.6k
Times solved
Beginner
Difficulty
Expert case by Ian
A startup company specializing in last mile delivery with drones is determined to reach $20M in revenue while also becoming profitable. The company's innovation lies in leveraging drone technology to revolutionize the logistics sector, specifically focusing on last-mile delivery, which accounts for
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A startup company specializing in last mile delivery with drones is determined to reach $20M in revenue while also becoming profitable. The company's innovation lies in leveraging drone tech
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(Open whole case)
2.4k
Times solved
Advanced
Difficulty
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Your client is a newly founded protein company. Its owners are two brothers. One of them is a chemist and the other one is a very famous fitness model and personal trainer on YouTube. They intend to enter the nutrition supplements industry where they want to focus on protein supplementation for body
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Your client is a newly founded protein company. Its owners are two brothers. One of them is a chemist and the other one is a very famous fitness model and personal trainer on YouTube. They i
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(Open whole case)
11.1k
Times solved
Advanced
Difficulty
Expert case by Xabi
The client is CarRentalCo, a global car rental company present on the European and North American markets. In Europe, it is present in most EU countries but has not yet entered the Baltic countries. CarRentalCo has asked us to determine whether or not they should enter the Baltic (Estonia, Latv
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The client is CarRentalCo, a global car rental company present on the European and North American markets. In Europe, it is present in most EU countries but has not yet entered the Baltic co
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(Open whole case)
10.3k
Times solved
Intermediate
Difficulty
Expert case by Antonello
Style:
A wealthy client has recently bought an island in the Caribbean. She has engaged us to identify possible uses for her new island.
A wealthy client has recently bought an island in the Caribbean. She has engaged us to identify possible uses for her new island.
(Open whole case)
16.5k
Times solved
Intermediate
Difficulty
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Your client, Virgin Mobile, is interested in offering telematics services to vehicles in the USA with a new brand: Carmatics.Should they enter this new market? If yes, how should they do it?
Your client, Virgin Mobile, is interested in offering telematics services to vehicles in the USA with a new brand: Carmatics.Should they enter this new market? If yes, how should they do it?
(Open whole case)
18.1k
Times solved
Beginner
Difficulty
Expert case by Gaurav
Style:
Our client is an alloy wheels manufacturer based in China. The client is contemplating entering the US market. At this point of time, the client sells the wheels in the China market. In order to make the wheels for the US market, he will have to expand its production capacity. As a result, whether t
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Our client is an alloy wheels manufacturer based in China. The client is contemplating entering the US market. At this point of time, the client sells the wheels in the China market. In orde
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(Open whole case)
5.1k
Times solved
Intermediate
Difficulty
Expert case by Giulia
Your client is a US-based manufacturer of branded cookies, Gumbread Inc. The client realized that their sales have declined in recent years. The client wants to know what they should do to do drive sales again.
Your client is a US-based manufacturer of branded cookies, Gumbread Inc. The client realized that their sales have declined in recent years. The client wants to know what they should do to do drive sales again.
(Open whole case)
5.0k
Times solved
Intermediate
Difficulty
Style:
Beyer, one of the biggest pharmaceutical companies in the world, just invented a very reliable vaccine against Chickenpox, a disease that affects children in the age from 2 to 16 years.Beyer came to you wondering what their potential sales in Europe in the first year would be if they launched this p
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Beyer, one of the biggest pharmaceutical companies in the world, just invented a very reliable vaccine against Chickenpox, a disease that affects children in the age from 2 to 16 years.Beyer
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(Open whole case)
61.8k
Times solved
Advanced
Difficulty
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Style:
Our client is a Chinese publisher called AnimeCo who is looking to publish a new book based on the popular Anime series Little Panda. This series has been highly popular in China with millions of viewers every day and the publisher is looking to capitalize on this potentially.They have asked us to p
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Our client is a Chinese publisher called AnimeCo who is looking to publish a new book based on the popular Anime series Little Panda. This series has been highly popular in China with millio
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(Open whole case)
5.3k
Times solved
Beginner
Difficulty
Expert case by Dennis
Style:
A large natural gas field is unexpectedly discovered on the Mediterranean island of Corsica. The gas can be accessed and produced relatively easily and is of good quality. Europe, and especially Germany as the largest gas consumer in the EU, is looking for alternative gas suppliers to reduce its one
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A large natural gas field is unexpectedly discovered on the Mediterranean island of Corsica. The gas can be accessed and produced relatively easily and is of good quality. Europe, and especi
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(Open whole case)
300+
Times solved
Beginner
Difficulty
Our client, Daily Journal is a highly respected & upscale newspaper which is read widely in the UK. The paper is positioned between the Wall Street Journal and the New York Times. Recently, the newspaper added an online segment which is a spin-off from the motherfirm. Dailyjournal.com is current
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Our client, Daily Journal is a highly respected & upscale newspaper which is read widely in the UK. The paper is positioned between the Wall Street Journal and the New York Times. Recent
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(Open whole case)
14.6k
Times solved
Intermediate
Difficulty
Expert case by Cristian
Our client, Element Mobile (EM), is the largest German telecommunications provider, with an impressive supply chain comprised of dozens of suppliers, six distribution centres, and hundreds of stores. EM offers a variety of products to its 20 million customers, including sim cards, broadband, phones,
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Our client, Element Mobile (EM), is the largest German telecommunications provider, with an impressive supply chain comprised of dozens of suppliers, six distribution centres, and hundreds o
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(Open whole case)
7.0k
Times solved
Intermediate
Difficulty
Equinite is a manufacturer of horse MRI machines in the UK. MRI (Magnetic Resonance Imaging) machines are used to produce detailed imaging of tissues using strong magnetic waves. They own the intellectual property for a horse MRI machine which is a unique design, allowing the horse to remain st
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Equinite is a manufacturer of horse MRI machines in the UK. MRI (Magnetic Resonance Imaging) machines are used to produce detailed imaging of tissues using strong magnetic waves. They o
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(Open whole case)
7.7k
Times solved
Intermediate
Difficulty
Topics:
Your client, Fairway, is a manufacturer and supplier of golf balls.The company is acting globally in almost every market.They are now planning to expand to Portugal, but they do not have any information about the market there.Portugal is a small country in western Europe with a population of 11
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Your client, Fairway, is a manufacturer and supplier of golf balls.The company is acting globally in almost every market.They are now planning to expand to Portugal, but they do not have any
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(Open whole case)
33.4k
Times solved
Advanced
Difficulty
Style:
We are a profitable American provider of fire and water remediation services. We are generally hired by insurance companies to provide cleaning services in the wake of burning and flooding damages. We we would like your counsel on whether to enter the growing USA traditional resi
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We are a profitable American provider of fire and water remediation services. We are generally hired by insurance companies to provide cleaning services in the wake of burning
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(Open whole case)
8.3k
Times solved
Intermediate
Difficulty
Topics:
How many gas stations are there in Paris? Suppose a friend of yours wants to open a gas station in Paris. What aspects should he consider?
How many gas stations are there in Paris? Suppose a friend of yours wants to open a gas station in Paris. What aspects should he consider?
(Open whole case)
43.2k
Times solved
Intermediate
Difficulty
Any Open Questions Left? Check Out Our FAQ
What are cases?
Cases, also known as case studies, are business problems that a candidate is presented with during a case interview at a management consultancy. The challenge is to solve it under pressure and in a structured way.
Why are consulting cases so important for your preparation?
Consulting interviews are among the most competitive and difficult job interviews that exist. Interviewers use cases as an indicator to test whether you have what it takes to become a successful consultant. In order to pass, you need to ace the case interview part. And in order to ace the case interview part, you need to be well-prepared. Thus, practicing cases is one of the most important aspects of interview preparation in consulting. During different rounds of interviews you will have to solve cases again and again to prove your structured and analytical thinking as well as your communication skills.
How can I practice cases?
You can practice cases on your own and go through them to get a first feeling for the structure. Afterwards, you should go into a real interview environment and practice cases with other members on the platform. You will find more than 50 mock-interview requests on the Meeting Board every day, which you can easily accept. If there is nothing suitable on the Meeting Board, you can also use the Candidate Listing. Here you can find active members on the platform and send them a direct meeting request. If you want to take your case practice to the next level, we recommend you to schedule coaching sessions with our coaches who have many years of experience in helping candidates receive their dream job offer.
What is the difference between Candidate-led and Interviewer-led?
In an interviewer-led case interview, the interviewer leads through the conversation. This means that the interviewer asks specific questions and also controls the time you have to analyze and answer different questions and therefore the depth of your analysis. In contrast, the candidate-led style (which is more common) is about you taking the initiative as a candidate. The initial problem is given to you by your interviewer. Afterwards, you have the freedom to structure the case according to your ideas and to ask questions proactively in order to find a solution to the problem.
What are real cases?
Real cases in the PrepLounge Case Library are cases that were submitted by management consultancies and have been treated as such within the company. They were made available from the real interview process. In this way, you can gain deep insights into the requirements of the case interview with the respective top consultancies (e.g. Bain & Company, Roland Berger, Deloitte, Oliver Wyman). We have marked these cases with the corresponding company logo.
What are expert cases?
Expert cases were created by our PrepLounge coaches and either contain real problems that the experts have already dealt with in their lives as consultants or cases from actual consulting interviews they took part in. They offer you an optimal preparation through the different subjects, levels of difficulty and styles. And the best thing is: If you have questions about the cases, you can ask them directly to the authors.
What are video case solutions?
Video case solutions are cases in which we provide you with a solution that includes a YouTube video. With this we want to help you to understand case solutions even better.
What does the rating of the cases mean?
Every member has the possibility to rate a case and leave feedback on the case. This gives you the opportunity to call up a ranking and solve the cases that are particularly popular in the community. It also gives us the opportunity to continuously improve our cases in order to provide you with the best possible practice material.
Which are the most interesting cases on PrepLounge?
Which cases are most interesting for you depends on your personal preference and your level of knowledge. If you are just starting with the case interview preparation, beginner cases are probably the most interesting ones for you. You also have the possibility to filter by different categories, such as personal fit, market analysis or brain teaser and many more, in order to address exactly the topics that are most relevant for your application.
Practice Case Interviews - Browse Our Extensive Case Library
Invite other candidates for a meeting to crack the case interactively or solve it on your own. If you like to check your case approach just have a look at the given sample solution.
A Vast Selection of Management Consulting Cases
Our selection of case studies mirror the wide variety in real case interviews. Thus, you can solve challenging problems around market sizing, market-entry, pricing, or operations strategy. Moreover, all provided cases are marked with a level of difficulty and the respective case style. This will allow you to filter for interviewer-led (as used by McKinsey) and candidate-led cases. In addition, some of our corporate partners granted some great original cases that have been used in real interviews. Check them out to get some authentic insights about the real application process of top firms like Bain, Roland Berger, and many more. These cases are clearly indicated by the firm's logo.
