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Interviewer Led Case: Autoparts | Case Interview Practice

Medium
Retail
Profitability
Public View

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CarCo, a family-owned Midwest auto parts and mechanics company, has seen annual profits drop from $25M to $10M despite stable volumes and pricing. You must diagnose the root cause and recommend strategies to restore profits.

Client: CarCo Industry: Automotive Services & Parts (Retail) Geography: Midwest, USA Ownership: Family-owned and operated CarCo provides automotive services: tires, oil changes, engine repair, and more. Historically profitable at $25M annually, profits recently fell to $10M — a 60% decline. Another similar drop would threaten viability.

Diagnose the root cause of the $15M profit decline and develop actionable strategies to restore profits to $25M annually.

Exhibit 1
Q1 – Diagnosing the Profit Decline
Investigate three buckets:
• Revenue decline: Price cuts? Fewer customers? Competitor encroachment?
• Cost increase: Higher fixed costs (rent, equipment)? Higher variable costs (parts, labor)?
• Market shifts: Industry-level decline? Fewer vehicles needing repair?
Key insight: Given a 50% cost structure and $10M in profits, cost-side explanations are unlikely to account for a $15M swing. Focus on revenue.
Q2 – Revenue Streams
Structure revenue into two categories:
• Products: Hardware (tires, engines, brakes, alternators), Software (speakers, radios, touchscreens), Consumables (oil, coolant)
• Services: Annual inspections, oil changes, winterizing, post-accident repair, scrapping
Q3 – Root Cause: Product Mix Shift
Despite constant total volume and pricing, customers have shifted toward lower-margin products (tires, oil changes) and away from engine overhauls. Since the cost structure is 50%, this mix shift dramatically reduces total profit.
Quantitative example: To restore $25M in profits, CarCo needs 150,000 additional engine overhauls per year (holding other volumes constant). For every 1 engine overhaul lost, 20 tire sales are needed to compensate.
Recommendations:
• Investigate pricing on engine overhauls — are competitors undercutting CarCo?
• Expand the customer base or add locations
• Add new high-margin services to encourage upselling
• Launch targeted marketing campaign for engine services
Q4 – Star Tires: Risk Assessment
Star Tires are priced at $25 with 60% margin ($15 profit). Risks to evaluate:
• Cannibalization: If regular tires are fully replaced, tire profit triples — but contract risk (existing tire supply agreements) and pricing optics remain
• Customer fit: Star tire buyers may not be current CarCo customers; existing customers may resist higher prices
• Brand alignment: Selling premium tires may pull CarCo toward a higher-end brand positioning that alienates core clientele
• Durability risk: If Star Tires last 3x as long, replacement frequency — and recurring revenue — declines
• Execution: Stable supplier? Adequate inventory? Mechanic capability?

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Published July 6, 2025 • 48 views
Firm/University: University of Notre Dame
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