Daimler AG signed a five year contract with Dassault Systèmes (DS) for computer aided design software in September, just weeks before the motor manufacturer said it would standardise on similar software from Siemens.
A DS spokesman said the decision "came as a surprise" because Daimler had not evaluated Catia V6, its latest top-end system.
"On September 20, 2010, Daimler AG renewed its Catia contract with Dassault Systèmes for five years," the spokesman said.
"In addition to Catia Daimler AG uses the company's Delmia, Enovia, Simulia, and 3Dvia brands. At this stage, we have no information as to which Catia specialised applications would be replaced and which ones will have to remain in use," he said.
"We were informed by Daimler AG that, as (the) CAD application portfolio was not their priority, its decision was based upon CAD integration in its home-grown PDM (product development management) system Smaragd. V6 openness to other PDM systems is part of PLM V6 R2011x, which was announced (this week)."
A Daimler AG spokesman said, "We evaluated several alternatives, among them Catia V6, and different relevant scenarios were extensively tested against  six criteria. The result led into a clear decision, which we have chosen now."
The criteria were support for the specific business process, integration with the PDM system, sustainability of the concept, technology, quality and cost.
"The potential system partners have to prove themselves against the competition in these categories," the Daimler spokesman said.
"The products and the range of services offered by Siemens convinced us in all aspects (that) it is competitive and the NX software ideally fits into our existing IT infrastructure in the CAD and PDM environment."
According to reports, Daimler has used its Teamcentre product life cycle management (PLM) software and Smaragd since the mid-1990s.
The spokesman said Daimler today used Catia in various divisions.
"We will completely migrate to NX," he said. "As stated (before), we will not comment on exact numbers. The combination of NX and Smaragd based on Teamcenter will represent our entire product development processes down to the production equipment and to the NC manufacturing."