Automotive Systems engineering is the key technology for many innovations in vehicle construction. In Vehicle development, quality control, risk and cost management is an important precondition for successful and on-time projects, in addition to expertise in increasing complexity. To realize increasing demands concerning safety, economic impact, fuel consumption, comfort and high quality a coordinated and systematic development process is essential in this contribution. Based on functional and non functional requirements, an open and modular system architecture must be designed. This system architecture, as the basis for the system design and implementation, support aspects like re-use, function partitioning, scalability and distributed development with well defined system interfaces. Furthermore, a hierarchical decomposition of the system into sub system and the necessity to realize a system by using different technical and physical principles will be the main topics out of system engineering and architecture design.