What caused the sudden 30% decrease in dealer participation for ACV Auctions's daily online wholesale auctions last week?

Introduction

The sudden 30% decrease in dealer participation for ACV Auctions's daily online wholesale auctions last week is a critical issue that demands immediate attention. This analysis will systematically identify, validate, and address the root cause while considering both short-term and long-term implications for the business.

I'll approach this problem by first clarifying key details, ruling out external factors, and then diving deep into product understanding, metric breakdown, and data analysis. From there, I'll form hypotheses, conduct root cause analysis, and propose validation methods and solutions.

Step 1

Clarifying Questions (3 minutes)

• Looking at the timing, I'm thinking this could be related to a recent product change. Has there been any significant update to the auction platform in the past two weeks?

Why it matters: Recent changes often correlate with sudden metric shifts. Expected answer: Yes, there was a UI update. Impact on approach: If yes, I'd focus on the change's impact on user experience.

• Considering the scale of the decrease, I'm wondering about system stability. Have there been any reported outages or performance issues recently?

Why it matters: Technical issues can dramatically affect participation rates. Expected answer: No major outages, but some intermittent slowdowns. Impact on approach: If yes, I'd prioritize technical root causes.

• Given the specificity of "dealer participation," I'm curious about the exact definition. How do we measure dealer participation in these auctions?

Why it matters: Ensures we're analyzing the correct metric. Expected answer: Dealers who place at least one bid in an auction. Impact on approach: Clarifies which part of the user journey to focus on.

• Thinking about external factors, has there been any significant change in the used car market or competitor activity recently?

Why it matters: External market forces can impact dealer behavior. Expected answer: No major market shifts, but a competitor launched a new feature. Impact on approach: If yes, I'd consider competitive pressures in my analysis.