Daimler has agreed with Siemens on a 10-year agreement for the use of the technology group's NX CAD software.

The German premium car group decided last year to replace its Dassault CATIA software with Siemens' NX CAD system. The move came as a surprise to France-based Dassault.

Daimler wants to implement Siemens NX for its Mercedes Benz passenger car operations by 2015, while implementation on the truck side will take a year longer.

The new global 10-year agreement calls for Daimler to start using NX by the middle of 2012 for new passenger car model development. The software will be rolled out at Daimler suppliers from this summer.