Bicycles, E-Bikes & Micromobility worked example

Supplier Risk Score with component defect severity rating of 20 score: a worked example in bicycles, e-bikes & micromobility

What does the result look like when component defect severity rating reaches 20 score? The full calculation is worked below with real intermediate numbers. a micromobility procurement or quality team needs to rank supplier risks before launch, ramp, or corrective action

The inputs for this scenario

  • Component defect severity rating: 20 score (raised for this scenario; the documented default is 8)
  • Defect occurrence frequency rating: 5 score (unchanged)
  • Inspection detection difficulty rating: 6 score (unchanged)

Working through the calculation

  • Applying the documented formula (Supplier risk priority score = supplier issue severity score × supplier issue occurrence score × supplier issue detection score) to the inputs above produces each figure below.
  • At this operating point the engine returns 11.25 risk score for supplier risk priority score, the number this scenario is built around.
  • At this operating point the engine returns 20 score for supplier issue severity score.
  • At this operating point the engine returns 5 score for supplier issue occurrence score.
  • At this operating point the engine returns 6 score for supplier issue detection score.

How this compares with the baseline

  • Against the tool's baseline example, where component defect severity rating sits at 8 score and the headline result is 6.45 risk score, this scenario comes in 74.42% above the baseline at 11.25 risk score.
  • A figure at this level is achievable when component defect severity rating is genuinely sustained, not just peaked for a shift. RPN treats a 2x10x2=40 the same as a 8x5x1=40, so a high severity rating alone (safety-critical brake or battery parts) should override a low multiplied total.

Results at a glance

  • Supplier risk priority score: 11.25 risk score (headline result)
  • Supplier issue severity score: 20 score
  • Supplier issue occurrence score: 5 score
  • Supplier issue detection score: 6 score

Run it with your numbers

  • Every input above is editable in the live Supplier Risk Score calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.