NPI, DFM/DFA & Engineering Change worked example

Manufacturing Readiness Level at 65% expected process uptime at this mrl: a worked example

This worked example runs the manufacturing readiness level numbers for a tougher week than the baseline: 65% expected process uptime at this mrl instead of the typical 90%. Estimate manufacturing readiness level for npi, dfm/dfa and engineering change using production-ready inputs so teams can confirm whether capacity can cover demand before committing the schedule.

The inputs for this scenario

  • Production output per readiness cycle: 4 units / cycle (held at the documented default)
  • Available MRL assessment cycles: 480 cycles (held at the documented default)
  • Expected process uptime at this MRL: 65 % (the input this scenario stresses; the baseline uses 90)
  • Expected first-pass yield at this MRL: 97 % (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Gross manufacturing readiness level capacity = manufacturing readiness level output per cycle × available manufacturing readiness level cycles.
  • Good manufacturing readiness level capacity works out to 1,211 units at these inputs, and this is the headline figure for the scenario.
  • Gross manufacturing readiness level capacity works out to 1,920 units at these inputs.
  • Manufacturing readiness level downtime loss works out to 672 units at these inputs.
  • Manufacturing readiness level yield loss works out to 37.44 units at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where expected process uptime at this mrl sits at 90% and the headline result is 1,676 units, this scenario comes in 27.78% below the baseline at 1,211 units.
  • Use it during an MRL assessment or rate-production readiness review to ground a capacity commitment in process maturity. 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

  • Good manufacturing readiness level capacity: 1,211 units (headline result)
  • Gross manufacturing readiness level capacity: 1,920 units
  • Manufacturing readiness level downtime loss: 672 units
  • Manufacturing readiness level yield loss: 37.44 units

Run it with your numbers

  • To rerun this with your own numbers, open the live Manufacturing Readiness Level calculator, set expected process uptime at this mrl to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.