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Easy Operations

Bumpers R Us

#Transportation #Manufacturing

Practice this beginner-friendly operations case interview question from Kearney in the Transportation sector. Includes detailed problem prompt, clarifying questions, structured framework, and expert recommendation. Part of ProHub's 835+ consulting case library.

ProHub Comment

This case tests the candidate's ability to diagnose operational bottlenecks in a manufacturing supply chain and prioritize solutions within budget constraints. The structure guides candidates from process mapping to root cause analysis to financially-constrained optimization, requiring both analytical rigor and practical business judgment.

Estimated Time 16 minutes
Difficulty Easy
Source Duke
31 / 100
Your client is Bumpers-R-Us, a manufacturer of plastic automotive bumpers. Bumpers-R-Us is a Tier-1 supplier for a major global OEM called CNW and is based in the southeastern United States. The client receives raw materials from around the world, which are then used in its plant to produce the plastic bumpers. The bumpers are shipped by truck 360 miles away to the local CNW plant. Bumpers-R-Us has been a Tier-1 supplier to CNW for over 5 years, but over the past 6 months, the client has seen an increase in the amount of time it takes for parts to arrive at the CNW plant. CNW has issued a warning of potential fines and loss of future contracts if the lead time is not returned to the previous levels. Bumpers-R-Us is eager to find the source of the change in lead time and fix the issue as soon as possible.

Clarifying Information

  1. Bumpers-R-Us is a domestic supplier that purchases raw materials from around the world and supplies solely to the local CNW plant.
  2. The client profited $25M last year, with $10M in costs.
  3. The manufacturing process consists of four stages: molding of plastic parts from raw materials, painting of molded parts, the bonding & assembly of the bumpers (Bonding/Assembly), and the shipment between the manufacturer and CNW.
  4. The pre-6 month lead time was 29 hours.
  5. The General Manager of the plant has directed a budget of up to $5M be dedicated to addressing the lead time issue.
Mock Interview
Interviewer

Your client is Bumpers-R-Us, a manufacturer of plastic automotive bumpers. Bumpers-R-Us is a Tier-1 supplier for a major global OEM called CNW and is based in the southeastern United States. The client receives raw materials from around the world, which are then used in its plant to produce the plastic bumpers. The bumpers are shipped by truck 360 miles away to the local CNW plant. Bumpers-R-Us has been a Tier-1 supplier to CNW for over 5 years, but over the past 6 months, the client has seen an increase in the amount of time it takes for parts to arrive at the CNW plant. CNW has issued a warning of potential fines and loss of future contracts if the lead time is not returned to the previous levels. Bumpers-R-Us is eager to find the source of the change in lead time and fix the issue as soon as possible.

You

Thanks. Before analyzing, I'd like to clarify a few key questions...

Interviewer

Good question. Let me provide some background information...

You

Based on this, I suggest analyzing from these dimensions...

AI Score
Structure Analysis Communication Business Sense Quantitative
Practicing...
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Practice this case with AI Mock Interview

Bumpers-R-Us faces increased lead times from 29 to 37 hours over six months, threatening client relationships. Candidates must identify the painting stage as the bottleneck, brainstorm improvement initiatives, and recommend the most cost-effective combination (robot replacement + software upgrade) to return to target within a $5M budget.

Key Insights:

  1. Manufacturing bottleneck identification requires process-level analysis of each stage’s duration and resource constraints
  2. Budget constraints force prioritization: combining targeted capital investment with software optimization achieves goals more efficiently than single large initiatives
  3. Interviewer-led cases require candidates to proactively structure thinking (framework), identify problems, generate creative solutions, and justify recommendations with quantitative and qualitative reasoning

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