This is a technical specification related to requirements for the application of ISO 9001 in mass and spare parts production in the automotive industry. The standard’s purpose is said sector’s quality system for which it establishes common, coherent characteristics at an international level. Indeed ISO/TS 16949 aims to promote the development of a quality management system geared at ongoing improvement. This is to be achieved by preventing defects and reducing wastage in the supply chain which plays an increasingly important role in both the design and production of automobiles. In addition to the prerogatives of ISO 9001, ISO/TS 16949 includes specific sectoral requirements for the production and supply of services, awareness and training of workers, design and development, checking of measurement instruments and analysis and improvement.