Supplier Quality, Development & Audits worked example

Supplier Risk Score with severity of supplier failure of 3 score: a worked example in supplier quality, development & audits

This worked example runs the supplier risk score numbers for a tougher week than the baseline: severity of supplier failure of 3 score instead of the typical 6 score. Estimate supplier risk for supplier quality, development and audits using production-ready inputs so teams can rank risks and decide which issue needs containment, controls, or escalation first.

The inputs for this scenario

  • Severity of supplier failure (impact on your line/customer): 3 score (the input this scenario stresses; the baseline uses 6)
  • Likelihood the supplier defect occurs (frequency): 4 score (held at the documented default)
  • Detectability at incoming inspection (before it reaches your line): 3 score (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Supplier risk score = supplier risk severity score × supplier risk occurrence score × supplier risk detection score.
  • Supplier risk score works out to 3.35 score at these inputs, and this is the headline figure for the scenario.
  • Supplier risk severity score works out to 3 score at these inputs.
  • Supplier risk occurrence score works out to 4 score at these inputs.
  • Supplier risk detection score works out to 3 score at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where severity of supplier failure sits at 6 score and the headline result is 4.55 score, this scenario comes in 26.37% below the baseline at 3.35 score.
  • Use it during annual supply-base risk ranking, before awarding new business, and after a supplier PPAP or escape to re-tier where audit and development attention should go. A result at this level usually justifies acting on the stressed input before touching anything else, because every other figure in the table is downstream of it.

Results at a glance

  • Supplier risk score: 3.35 score (headline result)
  • Supplier risk severity score: 3 score
  • Supplier risk occurrence score: 4 score
  • Supplier risk detection score: 3 score

Run it with your numbers

  • To rerun this with your own numbers, open the live Supplier Risk Score calculator, set severity of supplier failure to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.