Metrics question
What metric would you track for Lyft's debit card program?
- Lyft
- Metrics
- Medium
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What this question tests
Whether you can pick a metric tree for a financial product that captures both adoption and the deeper behavior change it needs to drive.
How to approach it
- Clarify the debit card's goal: likely driving Lyft earnings usage and building a sticky financial relationship with drivers.
- Prioritize activation first: percent of eligible drivers who sign up and activate the card, since adoption is the foundation.
- Track usage depth: percent of earnings loaded onto the card and spent through it, since a signed-up but unused card delivers no value.
- Track a retention metric: percent of active cardholders still using it after 3 months, since the real goal is habitual use, not a one-time signup.
- Add a guardrail metric: driver complaints or disputes related to the card, since financial products carry real trust risk if something goes wrong.
- Tie the metrics back to Lyft's business goal, likely driver retention or reduced payout costs, not just card usage in isolation.
What a strong answer includes
- Builds a funnel from activation to usage depth to retention, instead of stopping at signup rate alone.
- Prioritizes usage depth, earnings actually loaded and spent, since a dormant card provides no real value.
- Names a trust-related guardrail, complaints or disputes, appropriate for a financial product's higher stakes.
- Ties the metric choice back to Lyft's underlying business goal, driver retention, rather than treating the card as a standalone feature.
Common mistakes
- Tracking only signup rate, ignoring whether drivers actually use the card on an ongoing basis.
- Ignoring the trust and dispute risk that comes with a financial product touching drivers' earnings.
Likely follow-up questions
- How would you diagnose a high signup rate but low ongoing usage?
- What would you do if dispute rates were higher than expected after launch?
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More questions from Lyft
Learn the skill behind it
Chapters of the AI PM course that teach what this question tests.
- Chapter 9: Prove it paid off: outcomes, economics, and pricing
- Chapter 2: Data fluency: SQL, logs, and reading the truth yourself
- Chapter 14: Get the job: the AI PM interview loop