Manufacturing Operations Case Interview: Cost Analysis
| Case type | Operations |
|---|---|
| Industry | Manufacturing / Automotive |
| Difficulty | Medium |
| Firm style | Bain |
The case prompt
Your client is Titan Motorcycles, a US-based motorcycle manufacturer. Their production costs have been rising over the past three years. The CEO wants to identify the cost drivers and determine whether outsourcing certain manufacturing processes could improve profitability.
Titan Motorcycles produces premium cruiser and touring motorcycles at four US factories. Annual production is approximately 280,000 units. They've noticed that manufacturing costs per unit have increased 18% over three years while selling prices have remained flat. The CEO has asked us to analyze the cost structure and evaluate outsourcing opportunities, particularly for their powder coating process which has quality issues.
The exhibits
Exhibit 1
Manufacturing Cost per Unit ($) — 2021 to 2024
Manufacturing cost per unit ($) by category — materials, labor, finishing, overhead — 2021-2024.
Show the data behind Exhibit 1
| Cost Category | 2021 | 2022 | 2023 | 2024 | Change |
|---|---|---|---|---|---|
| Materials | $3,700 | $3,900 | $4,100 | $4,200 | +14% |
| Labor | $2,100 | $2,200 | $2,300 | $2,400 | +14% |
| Finishing | $1,200 | $1,400 | $1,700 | $1,850 | +54% |
| Overhead | $1,200 | $1,200 | $1,250 | $1,250 | +4% |
| TOTAL | $8,200 | $8,700 | $9,350 | $9,700 | +18% |
Exhibit 2
Powder Coating Cost per Unit ($) and Rework Rate (%) by Factory
Show the data behind Exhibit 2
| Factory | Units (K) | Coating Cost ($M) | Rework Cost ($M) | Rework Rate | Total ($M) | Cost per Unit |
|---|---|---|---|---|---|---|
| Tennessee | 85 | 12.8 | 1.5 | 4% | 14.3 | $168 |
| Georgia | 72 | 11.5 | 2.9 | 8% | 14.4 | $200 |
| Ohio | 68 | 11.2 | 5.1 | 12% | 16.3 | $240 |
| Texas | 55 | 8.8 | 2.2 | 7% | 11.0 | $200 |
| TOTAL | 280 | 44.3 | 11.7 | 8% avg | 56.0 | $200 avg |
Exhibit 3
| Vendor | Location | Cost per Unit | Quality Rating | Capacity (K units/yr) | Lead Time |
|---|---|---|---|---|---|
| DuraCoat Inc. | Nashville, TN | $175 | 98% | 300 | 3 days |
| Pacific Finishers | Tijuana, MX | $130 | 92% | 200 | 12 days |
| ChromeTech | Detroit, MI | $195 | 96% | 80 | 5 days |
| In-house (current avg) | Various | $200 | 92% (avg) | 280 | 0 days |
BainOperations · medium
Titan Motorcycles Operations Optimization
Manufacturing / Automotive
How a strong candidate structures it
A strong framework for this operations case would cover
Alternative valid frameworks include: make vs buy analysis, or process-by-process optimization.
Question by question
- 1
Case context
Understand the Case
“Can you summarize the situation and what we need to solve?”
- 2
Clarifying
Clarifying Questions
“What clarifying questions would you ask?”
- 3Drill the structure
Structure
Framework
“How would you structure your approach?”
- 4Drill the brainstorming
Analysis
Exhibit 1 Analysis
“Using Exhibit 1, identify the cost category driving the 18% increase and quantify how much it has grown relative to the others.”
- 5Drill the brainstorming
Analysis
Exhibit 2 Analysis
“Using Exhibit 2, identify the worst-performing factory and the cost/rework drivers behind the gap.”
- 6Drill the math
Math
Outsourcing Savings Calculation
“Using Exhibit 3, calculate the annual direct cost savings if Titan outsources all 280K units of powder coating to DuraCoat.”
- 7Drill the brainstorming
Analysis
Vendor Selection and Risks
“Using Exhibit 3, recommend a vendor and name the risks Titan should manage.”
- 8Drill the synthesis
Synthesis
Final Recommendation
“What is your final recommendation?”
The worked path
The numbers that decide it
- Finishing costs drove 43% of the total cost increase despite being only 19% of the cost base
- The Ohio factory has a 12% rework rate (3x Tennessee's 4%) — this explains much of the finishing cost increase
- Outsourcing to DuraCoat at $175/unit vs current average of $200/unit saves $25 per unit on direct costs
- The bigger savings come from eliminating rework: $11.7M annually in rework costs across all factories
- Net annual savings from DuraCoat outsourcing: approximately $7M direct + $11.7M rework - $15M one-time severance = ~$4M in year 1, $19M ongoing
- DuraCoat's 98% quality rating exceeds Titan's current 92% average, reducing warranty claims
- Pacific Finishers is cheapest but 12-day lead time and 92% quality create supply chain risk
Analysis Flow
- 1
Diagnose the cost problem (Exhibit 1)
- Total cost up 18% over 3 years
- Finishing grew 54% — the fastest by far
- Finishing now represents a disproportionate share of cost growth
- 2
Identify root cause (Exhibit 2)
- Ohio factory has 12% rework rate vs 4% at Tennessee
- Total rework costs across all factories = $11.7M
- Ohio alone accounts for $5.1M in rework
- 3
Evaluate outsourcing (Exhibit 3)
- DuraCoat: $175/unit, 98% quality, 300K capacity, Nashville location
- vs In-house: $200/unit average, 92% quality
DuraCoat savings = ($200 − $175) × 280K = $7M direct savings
Plus $11.7M rework elimination = $18.7M total savings
Minus $15M one-time severance = $3.7M net in Year 1, $18.7M ongoing
Final Synthesis
Outsource powder coating to DuraCoat. Net savings of ~$19M annually after Year 1. DuraCoat offers better quality (98% vs 92%), proximity to the Tennessee factory, and sufficient capacity. Start with Ohio and Georgia (highest rework rates) and phase in remaining factories over 12 months.
BainOperations · medium
Titan Motorcycles Operations Optimization
Manufacturing / Automotive
Why this case
This manufacturing operations case tests the make-or-buy decision through quality and rework, not unit price alone. A generic cost case may select the cheapest supplier. Here, Ohio's 12% rework rate drives hidden cost, while DuraCoat's 98% quality can remove rework and improve reliability. The industry-specific trap is mistaking a low quote for the lowest total cost.
FAQ
- Why is finishing the key cost driver in this case?
- Finishing rose from $1,200 per unit in 2021 to $1,850 in 2024, a 54% increase, while total unit cost rose 18% from $8,200 to $9,700. It drove 43% of the total cost increase. That makes finishing the right starting point before evaluating vendors or broader labor and materials changes.
- Why should I not choose Pacific Finishers?
- Pacific Finishers quotes $130 per unit, below DuraCoat's $175, but its 12-day lead time and 92% quality rating create operational risk. Its annual capacity is 200K units versus Titan's 280K production. The case rewards total-cost reasoning, so a cheaper quote is not automatically the best operational choice.
- How should I calculate the outsourcing savings?
- Use direct savings first: ($200 in-house cost minus $175 vendor cost) multiplied by 280K units equals $7M. Add the $11.7M annual rework cost that outsourcing could eliminate, then subtract the $15M one-time severance cost. That yields about $3.7M in Year 1 and $18.7M in ongoing annual savings.
- What implementation plan should I recommend?
- Recommend phasing DuraCoat outsourcing across the factories over 12 months, starting with Ohio and Georgia because they have the highest rework rates. Confirm the vendor's 300K-unit capacity, 3-day lead time, 98% quality, and transition readiness. Track rework, warranty claims, service levels, and realized savings during the rollout.
BainOperations · medium
Titan Motorcycles Operations Optimization
Manufacturing / Automotive