Interview Questions › Guesstimate

Estimate global number of active Uber drivers

Estimate the total number of monthly active drivers and delivery couriers operating on the Uber platform worldwide.

Context

Uber operates mobility and food delivery across 70+ countries and 10,000+ cities.

Clarifying questions to ask first

• Are we counting rideshare drivers only or including Uber Eats delivery couriers? (Both drivers and delivery couriers).
• What constitutes an "active" driver? (Completed at least 1 trip in the trailing 30 days).

How to approach it

1. Demand-to-Supply Reconciliation: Global Uber trips (~28 Million trips/day = ~840 Million trips/month)
2. Calculate average monthly trips completed per driver (Full-time drivers: 300 trips/mo; Part-time drivers: 80 trips/mo -> Blended ~150 trips/mo)
3. Divide Total Monthly Trips by Average Trips per Driver to calculate Monthly Active Drivers
4. Cross-check against public earnings disclosures (~5.5-6.0 million active drivers and couriers globally)

Framework: Active Drivers = (Total Monthly Platform Trips) / (Weighted Average Monthly Trips per Active Driver)

Sample answer

• Total Monthly Trips: 28M trips/day × 30 days = 840 Million trips/month (Rides + Eats)
• Driver Engagement Distribution:
• - Full-Time Drivers (35%): ~320 trips/month
• - Part-Time / Weekend Gig Drivers (65%): ~60 trips/month
• - Weighted average trips per active driver = (0.35 × 320) + (0.65 × 60) = 112 + 39 = ~151 trips/month
• Total Monthly Active Drivers = 840,000,000 / 151 ≈ 5.56 Million drivers

1. 840M trips / 150 trips/driver = ~5.6 Million monthly active drivers worldwide
2. Matches Uber's reported ~5.7M active earning drivers/couriers

Executive estimate: ~5.5 to 5.8 Million monthly active drivers and couriers globally on Uber (~35% full-time, ~65% part-time).

What interviewers look for

• Daily/Monthly Completed Trips Anchor
• Driver Shift & Utilization Modeling (Full-Time vs Part-Time)
• Mobility vs Uber Eats Delivery Couriers
• Public Regulatory Filing Validation