Manufacturing Operations Case Interview: Worked Cost Case
| Case type | Operations |
|---|---|
| Industry | Manufacturing / Automotive |
| Difficulty | Medium |
| Firm style | Bain |
Where is the manufacturing cost base leaking?
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.
Which exhibits quantify the operations fix?
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 |
|---|---|---|---|---|
| Materials | $3,700 | $3,900 | $4,100 | $4,200 |
| Labor | $2,100 | $2,200 | $2,300 | $2,400 |
| Finishing | $1,200 | $1,400 | $1,700 | $1,850 |
| Overhead | $1,200 | $1,200 | $1,250 | $1,250 |
| TOTAL | $8,200 | $8,700 | $9,350 | $9,700 |
Exhibit 2
Powder Coating Cost per Unit ($) and Rework Rate (%) by Factory
Rework cost ($M): Tennessee 1.5, Georgia 2.9, Ohio 5.1, Texas 2.2; total 11.7.
Show the data behind Exhibit 2
| Factory | Units (K) | Coating Cost ($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 contributes $650 of the $1,500 unit-cost increase, or 43.3%; it is 19.1% of current manufacturing cost.
- Ohio has the worst current powder-coating cost and rework metrics, but the exhibit does not establish the cause of the historical finishing trend.
- The $200 average includes both coating and rework. A $175 vendor quote implies a $7M annual comparison, not $7M plus $11.7M.
- DuraCoat has the strongest listed quality and 300K nominal capacity, but available capacity, comparable quality definitions and landed cost need validation.
- With full $15M severance and a full year of $7M savings, first-year net is negative $8M before other effects; simple payback is about 2.14 years.
- Tennessee current unit cost is below the DuraCoat quote. Selective outsourcing and internal improvement deserve comparison before an all-plant rollout.
Final synthesis
Diagnose the $1,500 manufacturing cost increase: finishing $650, materials $500, labor $300 and overhead $50. Finishing is the largest contributor but powder coating is only a subset. Ohio has the highest current coating cost and rework rate; investigate its process and the stated older equipment without treating cross-sectional evidence as proof of historical causality. The total $56M powder-coating baseline includes $11.7M rework. Outsourcing all 280K units at $175 costs $49M, giving $7M before additional costs, not $18.7M. Full $15M severance would produce negative $8M first-year net with a full year of savings, and about 2.14 years simple payback. DuraCoat is a sensible pilot candidate because of its stated quality and nominal capacity. Start with Ohio, verify landed cost and available capacity, and compare selective outsourcing with internal upgrades. Tennessee already costs less per unit than the quote, so do not mandate full outsourcing. Confirm avoidable costs, residual rework responsibility, ramp timing and quality before approval.
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