VDA 6.1
VDA 6.1 is a German quality management system standard. It was initiated by the automobile industry. The first VDA standard was for the exchange of surface models, and was named "VDA-FS". It has been superseded along the way, by a subset of the "Initial Graphics Exchange Specification" (IGES); referred to, simply, as "VDA". Aside from this exchange standard, VDA also developed "VDA-PS", a library standard for standard parts, now known as "DIN 66304". Based on ISO 9001:1994, the quality management system includes all elements of QS-9000, with an additional four requirements specific to VDA 6.1 as  follows: The VDA standard is broken into two parts: Any company seeking certification must achieve at least 90 percent compliance in a formal quality audit. Sanctioned interpretations of VDA 6.1 are available, clarifying some of the elements, so as to assist companies and registrars to understand the requirements better. There are also a number of other manuals, which must be read in conjunction with the VDA 6.1 manual, and is aimed at facilitating better understanding of what is required. More elaborated versions of this standard are VDA 6.2 and VDA 6.4.