Design
Car Rental System
Design a car rental platform like Hertz or Avis — users search available cars, book them, and manage reservations.
01 - Why interviewers ask this
It's a solid inventory-plus-scheduling problem across multiple locations — interviewers use it to see if you generalize resource booking beyond a single-location assumption.
02 - Where this system exists in the real world
You interact with this design every day.
Hertz / Zipcar / Turo rental platforms
Corporate fleet management systems
Equipment and machinery rental businesses
03 - What you'll master
Solve this once. Know it forever.
Manage vehicle inventory across locations
Handle reservation date-range conflicts
Model pricing by vehicle category and duration
04 - What you'll design
7 functional · 3 non-functional requirements.
Browse available cars by type, location, and date range
6 more requirements inside
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05 - Companies that ask this
You may face this exact question in your next interview.
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