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Medium Profitability Product Design Cost Reduction

Automobile Producer

#Manufacturing
ProHub Comment

This case tests the candidate's ability to structure a complex business decision using a profitability framework (Net Present Value impact). The sample response demonstrates strong analytical thinking by systematically evaluating both cost structure and demand generation impacts, while identifying key assumptions that can be tested. The candidate correctly recognizes that intuitive appeal (simplicity of one key) does not translate to real customer value when two keys are typically carried together.

Estimated Time 25 minutes
Difficulty Medium
Source Harvard
10 / 100

The director of marketing at an automobile manufacturer suggests changing the current design, where two separate keys operate the ignition and the doors to a design where one key operates all lock mechanisms.

How do you think about whether this a good idea or not?

Clarifying Information

No separate ‘Clarifying Information’ section is provided in this case. The case presents the scenario directly and expects the candidate to structure their own analysis.
Mock Interview
Interviewer

The director of marketing at an automobile manufacturer suggests changing the current design, where two separate keys operate the ignition and the doors to a design where one key operates all lock mechanisms. How do you think about whether this a good idea or not?

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...
Score coming soon
Practice this case with AI Mock Interview

An automobile manufacturer considers consolidating ignition and door locks into a single-key system. The analysis requires evaluating whether the change improves profit throughput through cost reduction or demand increase. The recommendation is against the change, as the cost structure would likely worsen (more complex locks needed for all mechanisms), simplicity benefits are minimal, security implications are neutral, and demand generation is uncertain.

Key Insights:

  1. Structure all business decisions around NPV impact: cost structure changes vs. demand changes vs. investment required
  2. Distinguish between intuitive appeal and actual customer value; carrying two keys on the same ring means minimal simplicity benefit
  3. Consider how security systems and alternative compromise methods (Slim Jim rather than lock picking) affect the value of lock mechanism complexity
  4. Evaluate defensibility: easily copied innovations provide no lasting competitive advantage, so long-term cost position becomes the decision driver
  5. Identify and test key assumptions early before committing investment; a cheap survey may suffice instead of expensive pilots when demand signal appears weak