ISO 9001 & IATF 16949 Certification: What's the Difference?

IATF 16949 cloud

IATF 16949:2016 is not a major barrier to the automotive parts market


What is IATF 16949?

IATF 16949 is a standard developed by members of the International Automotive Task Force (IATF) that was later submitted to the International Organization for Standardization (ISO). As a standard, IATF 16949 outlines the requirements for maintaining a Quality Management System (QMS) in the automotive sector. 

ISO 9001 vs IATF 16949

IATF 16949 is an independent standard from ISO 9001. However, IATF 16949's structure and requirements have some overlap with the structure and requirements of ISO 9001.

In fact, a quality management system compliant with ISO 9001 is a requirement of IATF 16949.

Therefore, it is not too disruptive for a company with ISO 9001 Certification to introduce the additional requirements needed for IATF Certification.

You can consider IATF 16949, which has also adopted the Annex SL High-Level Structure, to be a supplement to ISO 9001 Implementation.

The goal of the IATF standard is the development of a QMS that:

  • Provides for continual improvement,
  • Emphasizes defect prevention,
  • Includes specific requirements and tools from the automotive industry, and
  • Promotes the reduction of variation and waste in the supply chain.

e-Book Implementing ISO 9001

Additional Requirements for IATF 16949 Certification

If your organization already has ISO 9001 certification, you only need to meet a couple more requirements to get IATF 16949 certification as well. These include:

  • Incorporation of some of the Original Equipment Manufacturers (OEM) Customer Specific Requirements (CSRs) to reduce the complexity and number of CSRs for suppliers to implement and for Certification Bodies (CB) to audit;
  • Inclusion of requirements for safety-related parts and processes;
  • Use of Automotive Core Tools
    • PPAP
    • APQP/CP
    • FMEA
    • SPC
    • MSA
  • Enhancement of product traceability requirements;
  • Inclusion of requirements for products with embedded software;
  • Inclusion of a warranty management process addressing no trouble found (NTF) and the use of automotive industry guidance;
  • Clarification of sub-tier supplier management and development requirements;
  • Addition of corporate responsibility requirements.


NOTE: You may need to change your Certification Body (CB) as there is only a limited number of CBs that are IATF Accredited.


Impact of IATF 16949 on ISO 9001 Certified Auditors

If you are already an ISO 9001 Lead Implementer maintaining an ISO 9001 QMS, you will find the expansion of your QMS to meet IATF requirements quite straightforward.

If you are a QMS Consultant with ISO 9001 Lead Auditor Certification with a basic knowledge of the automotive parts industry, the study of IATF 16949 should enable you to implement and maintain an IATF 16949 compliant QMS.


ISO 9001:2015 Lead Implementer

Note: First published November 2018; revised and updated in September 2021.

Written by Dr John FitzGerald

Director & Founder of deGRANDSON Global. He spent 15 years in the manufacturing industry and 25 years training, consulting & auditing management systems

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