Why most cost reduction projects fail (and what actually works)
Cost reduction is one of the most common objectives in manufacturing. It is also one of the most poorly executed.
The typical approach
A common cost reduction strategy looks like this: set a target (reduce cost by 5%), push suppliers for price cuts, negotiate until some reduction is achieved.
This approach delivers short-term savings but creates long-term problems:
- Supplier pushback and relationship erosion
- Hidden quality risks as suppliers cut corners to meet price targets
- Unstable processes optimized for cost rather than capability
What actually drives cost
Cost is not a number. It is a result of:
- Process selection — HPDC vs gravity casting changes cost fundamentally
- Design complexity — every unnecessary tolerance adds machining time
- Material utilization — yield, scrap rates, and runner-to-part ratios
- Production volume — economies of scale in tooling amortization
- Supplier capability — a capable supplier produces cheaper parts through lower rejection
Without understanding these factors, cost reduction becomes guesswork.
A better approach
Cost transparency. Build detailed cost models — zero-based costing for tooling, should-costing for parts. At Bajaj, I built my own cost estimate for every component before engaging with suppliers. By the time I sat across the table, I knew where their margins were and where genuine cost drivers existed.
Process optimization. Improving cycle times, reducing scrap, and eliminating inefficiencies. I reduced casting cycle time by 33% on Triumph components — not by pushing the supplier harder, but by redesigning the production workflow.
Design changes. Simplifying geometry or relaxing tolerances to reduce manufacturing complexity. The biggest cost lever in casting is wall thickness — a 1mm reduction across a crankcase can save significant material cost at 8,000+ parts per month.
Material substitution. At Bajaj, replacing AlSi9MnMg with ADC12 on the three-wheeler handlebar delivered €42K in annual savings with no performance compromise. But this only works when you understand the material science — not every substitution is safe.
Over 7 years at Bajaj Auto and Mahindra & Mahindra, I delivered €3.7M+ in cumulative cost savings through value engineering, material substitution, and process optimization — not through supplier squeeze tactics. I'm completing my MBA at HHL Leipzig and looking for roles where engineering-led cost optimization matters.