iatf-16949-audit

IATF 16949:2016 Internal Audit — Supplemental Requirements

Goal

Audit the automotive-specific supplemental requirements of IATF 16949:2016, including CSR compliance and the three mandatory internal audit streams. Use in conjunction with iso-9001-internal-audit for a complete IATF audit.

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When to use

This skill covers the IATF 16949 supplemental requirements — the automotive additions to ISO 9001.

IATF 16949 requires three types of internal audit (§9.2.2.1). All three must be planned, executed, and recorded within the audit programme cycle:

1. QMS audit — covers the entire quality management system (ISO 9001 + IATF supplementals)
2. Manufacturing process audit — process-based, covers all manufacturing processes at least annually
3. Product audit — product-specific, verifies product conformance to specifications

All manufacturing processes must be audited at least annually, with increased frequency for high-risk or poor-performing areas.

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Required IATF Audit Checklist

☐ Verify all three audit streams are planned and executed within the programme cycle ☐ Confirm CSR register is current and that changes trigger QMS document updates ☐ Check contingency plans are documented, reviewed, and tested (not just written) ☐ Verify special characteristics are consistent across all documents (drawing, DFMEA, PFMEA, CP, WI) ☐ Confirm supplier monitoring and escalation are active with defined thresholds ☐ Check Control Plan ↔ PFMEA linkage is current ☐ Verify traceability and suspect material isolation capability (24-hour test) ☐ Review temporary deviations for approval, expiry, and active control ☐ Verify problem-solving methodology is applied with objective evidence of effectiveness ☐ Confirm management review includes all IATF supplemental inputs ☐ Do not accept verbal confirmation — verify by observing the process, interviewing personnel, and reviewing records

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Key IATF 16949 supplemental requirements — audit questions