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To fulfil the increasing requirements of electric/electronic architectures in automotive environments new concepts for future Electronic Control Units (ECU) are needed. Novel architectures offer much higher potential in terms of performance compared to higher clock rates in standard microcontroller devices. The following contribution discusses the performance benefits of new concepts as well as advantages in early development phases. We focus on two systems: A central body controller and a gateway system. Both are realized on reconfigurable hardware. In comparison to microcontrollers the FPGA technology offers the opportunity of task parallelization and partial dynamically reconfiguration. These novel architectures demand new tool flows and standards which will be also addressed in this paper.