Process effectiveness & efficiency (IATF only)
Plain-language summary
Top management must review not only whether processes work (effectiveness) but what they cost in waste and resources (efficiency) — and the results must reach management review.
What the clause is really asking
Effectiveness asks 'did we hit the target?'; efficiency asks 'at what cost?'. IATF wants leadership looking at both — scrap, rework, OEE, cost of poor quality — so improvement targets attack waste, not just defects.
What auditors look for
Auditors look for efficiency measures alive at top-management level: OEE or utilisation data, cost-of-poor-quality tracking, scrap/rework trends — and evidence these were reviewed by top management with actions, feeding management review.
Typical evidence
OEE/utilisation reports; CoPQ or scrap/rework cost tracking; management review inputs showing process performance results and resulting actions.
How to comply — recommendations
Pick a small honest set: OEE on constraint machines, scrap value per month, rework hours. Put them on the management review agenda permanently and minute the decisions they trigger.
Common nonconformities
Only effectiveness KPIs exist; efficiency data collected but never reviewed by top management; no actions traceable to poor efficiency results.
Related clauses
Builds on ISO 9001 5.1.1 / 9.3
In the book
Chapter 5 — Leadership — The Desk Where Quality Lives treats this clause family in full: what it is really asking, what auditors look for, the evidence that satisfies, how to make it work on a real floor, and where companies stumble. This IATF requirement is covered in the Automotive Edition, in the same six blocks as the ISO clause around it.
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