Now in its 4th edition, the IATF Auditor Guide has been updated to include additional essential auditor competency requirements, such as audit nonconformity management and auditing top management processes. The document is organized in three distinct sections: The first and second sections outline the 32 audit steps and are divided into Stage 1 Readiness Review and Planning (Section 1) and Site Audit, Nonconformity Management and Certificate Issue (Section 2); The third and final section covers Auditing Competency Criteria, and reinforces the knowledge requirements of the automotive Core Tools, including FMEA, MSA, statistical tools and control plan.