Sizing CARS24's used-car transaction volume after the first COVID-19 lockdown

Estimate how many cars have been sold through CARS24 since the first COVID-19 lockdown in March 2020. CARS24 is an online platform for buying and selling used cars, best known in India. Walk through your equation, the assumption behind each number, and how you would check that the result is reasonable. ```hint Size the right market Anchor on the market this company actually operates in and the kind of car it trades, then let the pandemic change your inputs year by year instead of applying one flat rate. ``` ### Clarifying Questions - Up to what date should the count run: today, or a specific end point? - Should the estimate cover India only, or also CARS24's businesses outside India? - Does "sold through CARS24" mean every car that passes through the platform to a new owner, whether a dealer or an individual buyer, or only sales to individual buyers? - Is a most-likely value with a range acceptable, or do you want a single number? ### What a Strong Answer Covers - Pinning down the time window, the geography and what counts as one sale before building the equation. - A clear equation from the used-car market down to CARS24's share of it, with each factor labeled as an assumption. - Year-by-year adjustments for the lockdown and the shift in car demand that followed it. - Correct arithmetic, a sanity check from a second angle, and a range rather than false precision. ### Follow-up Questions - Which single assumption moves your answer most, and how would you pin it down with public data? - How would the estimate change if a car bought from an owner and later sold to a dealer counted as two transactions? - Build a rough bottom-up estimate from how many cars CARS24 could inspect and buy per location per day. Does it agree with your top-down figure?