Interview Questions › Guesstimate

Estimate number of daily Uber ride requests in a metro city

Estimate the number of daily Uber ride requests in a tier-1 metropolitan city with a population of 10 million (e.g., Delhi, London, or São Paulo).

Context

Consider peak commute hours, leisure trips, airport rides, and competing transit options (metro, bus, personal vehicles).

Clarifying questions to ask first

• Are we counting completed rides or all initial ride search/booking requests?
• What is the competitive landscape (e.g. Uber has 50% market share)?

How to approach it

1. Segment population into Addressable Target Demographic by income and smartphone adoption
2. Break down daily trip intents: Commute to work/college, Leisure/Dining, Late Night, and Transit Hubs/Airports
3. Apply modal share for ride-hailing vs personal car / public metro
4. Factor in unfulfilled / cancelled requests

Framework: Addressable Pop -> Smartphone Ride-Hailing Users -> Daily Active Riders × Trips/Day + Unfulfilled Requests

Sample answer

• Pop: 10M -> 4M addressable working adults (ages 20-55 with middle+ income)
• ~15% (600k) use ride-hailing on any given weekday
• Uber market share = 50% -> 300,000 daily active riders
• Average rides per active rider = 1.6 rides/day -> 480,000 completed rides + 15% cancellation/search abandonments = ~550,000 requests

1. Step 1: 10M total pop -> 40% target income demographic = 4.0M
2. Step 2: 15% ride-hail penetration on a weekday = 600k riders
3. Step 3: Uber captures 50% = 300k riders taking 1.5 trips = 450k fulfilled + 100k unfulfilled/searches = ~550k total daily requests

Executive estimate: ~550,000 daily Uber ride requests in a 10M metro city (~450k completed rides, ~100k price checks/unmatched).

What interviewers look for

• Target Demographic Funnel
• Trip Frequency per Active User
• Peak vs Off-Peak Distribution
• Market Share vs Competitors