Oliver Wyman doesn't use one online test everywhere. Its Brazil and Mexico campus page describes 26 questions in 50 minutes, in English, covering critical reasoning, problem solving, data sufficiency and integrated reasoning, and its Middle East internship and Tokyo entry-level postings list an online test too. The European postings we read describe interviews only. For the case interviews that follow the test, Soreno, an AI voice interview practice app for consulting and finance candidates, has a free Oliver Wyman-style practice case with no sign-up and full mock cases with scored feedback.
Updated
Oliver Wyman publishes its hiring steps office by office, on its own careers pages and in postings on Marsh's careers site. These cards stick to what those pages say, read November 3, 2026. The global interview preparation page describes conversational and case interviews and no test.
An online test after the application and before a short fit interview.
Oliver Wyman's FAQs for its Data Science and FSQA internships.
A six-month internship in Dubai or Doha.
For students at universities in Japan graduating between July 2027 and March 2028.
The most detailed description of an Oliver Wyman test on any page we read. It runs inside a fully virtual process.
Order
The online test comes right after the application. Then a 15-minute fit conversation in English with no case, then two rounds of two case interviews each.
Oliver Wyman: Brazil and Mexico careersPace
26 questions in 50 minutes leave about 115 seconds each. In our experience a simple checkpoint helps: question 13 by minute 25.
Stakes
Oliver Wyman says every stage is evaluative and eliminatory, and progression depends on performance in the previous phase.
Reapplying
If your application ends at the fit interview, you wait one year before reapplying, the FAQ says. It doesn't say what happens after the test stage.
These postings describe their hiring steps and none mentions an online test. Postings change each cycle, so check yours.
Europe
The London internship and the Paris, Brussels, Madrid and Copenhagen entry-level postings describe a mix of conversational and case interviews and ask for a CV, a cover letter and, in most, transcripts.
Oliver Wyman: London Summer Internship 2027Tokyo intern
The 2027 Tokyo summer internship lists application screening, then a first and final round of case and CV interviews.
Oliver Wyman: Summer Intern 2027, TokyoHong Kong intern
Applications close November 8, with CV review after the deadline and interviews in November.
Oliver Wyman: Summer Intern 2027, Hong KongOliver Wyman names the four question types but publishes no samples on the pages we read. These are ours, written to the same labels.
Data sufficiency
(1) Revenue was $40M. (2) Costs were 85% of revenue. Statement 2 alone is enough, since the margin is 15% whatever the revenue. Statement 1 alone tells you nothing about costs. Answer: statement 2 alone.
Problem solving
3 lines make 1,200 units a day, so 400 each. A fourth at the same rate makes 1,600 a day, and a 36,000-unit order takes 22.5 days instead of 30.
Free case math drillsIntegrated reasoning
Region A sells $50M and grows 20% a year. Region B sells $60M and grows 8%. Compounding gives $72M against $69.98M, so Region A pulls ahead, narrowly.
Critical reasoning
"Stores that added self-checkout had higher profits last year, so self-checkout raises profits." The argument assumes nothing else separated those stores, such as size or location. The best answer choice names that gap.
From Oliver Wyman: Brazil and Mexico careers, Oliver Wyman: Data Science internship FAQ (2025), Oliver Wyman: FSQA internship FAQ (2025), Oliver Wyman: Middle East internship 2027, Oliver Wyman: Entry-level Consultant (March 2028), Tokyo and Oliver Wyman: London Summer Internship 2027.
Oliver Wyman's Brazil and Mexico page names the four types and doesn't define them. These one-line descriptions are ours.
A short argument, then a question on its assumption, a flaw, or what would strengthen or weaken it.
Arithmetic in a business setting: rates, percentages, capacity and time.
Decide whether the statements given are enough to answer, without needing to finish the calculation.
Combine a table, a chart or a short text to answer one question.
Oliver Wyman's posting for Tokyo entry-level consultants graduating by March 2028. Its dates show how quickly the test follows the deadline.
November 25
One PDF with an English resume, an English cover letter and a transcript, plus JLPT N1 for non-native Japanese speakers.
November 26 to 29
Screening on November 26 and the online test from November 27 to 29, two days after the deadline.
December 5
December 8 to 18
A second round of case and CV interviews, 2 of 60 minutes, December 8 to 10, and a final round in the same format on December 17 and 18.
Written by us. Time the first six against the Brazil and Mexico pace, then take the rest out loud.
Short, GMAT-like items.
Data sufficiency: what is the margin if costs were 85% of revenue?
15%, and revenue doesn't matter. Spotting what you don't need is the skill.
3 lines make 1,200 units a day. How long does a 36,000-unit order take with a fourth line?
22.5 days. Find the rate per line first.
A stock falls 50% and then rises 50%. Where does it end?
25% below where it began. The rise works on a smaller base. Practice it, see a model answer
What is the angle between the clock hands at 3:15?
7.5 degrees, since the hour hand has moved a quarter of the way from 3 to 4. Practice it, see a model answer
How would you check an estimate before you give it?
A second route to the number and a known benchmark. Practice it, see a model answer
Which costs more over 5 years: a $10,000 machine with $1,000 a year upkeep, or a $6,000 one with $2,000 a year?
$15,000 against $16,000, so the pricier machine is cheaper over 5 years. The two cost the same at year 4.
Fit and case, in Oliver Wyman's style.
Why Oliver Wyman?
Two specific reasons tied to its work or people, and one tied to your goals. Practice it, see a model answer
Walk me through your background.
Two minutes, in order, ending on why consulting now. Practice it, see a model answer
A grocery chain's profits fell 20%. Where would you look first?
Split revenue and costs, size each move, and say which branch you would test first. Practice it, see a model answer
A furniture retailer wants to sell online. How would you approach it?
Demand, the cost to serve online and the effect on stores, then a small test. Practice it, see a model answer
Prep sites disagree on length, parts and calculators. Oliver Wyman's own pages only describe the Brazil and Mexico test in detail, so use that and your invitation.
The European and Tokyo internship postings we read describe interviews only. Prepare for cases either way.
At about 115 seconds a question, one stuck item costs you the next.
The question is whether you could answer, not the answer itself.
In Brazil and Mexico the instructions arrive one day before the test. Check your spam folder.
Our plan, matched to what Oliver Wyman's pages say.
First
Brazil and Mexico, the Middle East internship and Tokyo entry-level hiring list a test. Most other postings we read don't.
Two weeks
Sets of 13 in 25 minutes, the Brazil and Mexico pace, mixing the four types. Review every miss.
Daily
Rates, growth and percentages from small tables.
In English
The Brazil and Mexico test is entirely in English, and the fit interview too.
Cases
In Tokyo the first case interview comes about a week after the test.
Soreno's AI interviewer runs Oliver Wyman-style cases out loud, asks follow-ups and scores your structure, math and recommendation. The practice items here are Soreno's own. Soreno is not affiliated with Oliver Wyman.
An online test some offices add before interviews. Oliver Wyman's Brazil and Mexico page describes 26 questions in 50 minutes, in English, on critical reasoning, problem solving, data sufficiency and integrated reasoning.
No. Brazil and Mexico, the Middle East internship and Tokyo's entry-level hiring list one. The London, Paris, Brussels, Madrid and Copenhagen postings and the Tokyo and Hong Kong internship postings we read on November 3, 2026 don't mention a test.
None of the Oliver Wyman pages we read says. Your instructions, which arrive the day before in Brazil and Mexico, are the place to check.
Oliver Wyman doesn't name a vendor on the pages we read. Its Latin America internship FAQs call it GMAT-like.
Oliver Wyman doesn't publish a pass mark. Its Brazil and Mexico FAQ says only that every stage eliminates and progression depends on the previous one.
Timed sets of GMAT-style critical reasoning, problem solving, data sufficiency and integrated reasoning at about two minutes a question, plus daily mental math and case practice.
In Brazil and Mexico, a 15-minute fit conversation and two rounds of two case interviews. In the Middle East internship, an HR interview and case interviews. In Tokyo, three case rounds.
Oliver Wyman's Brazil and Mexico FAQ says applicants rejected at the fit interview wait one year. It doesn't say what applies after the test stage.
