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The objective of this paper is to define how complex automotive electronics have become and how advanced semiconductor technology is being developed to simplify the development of these systems. Automotive systems are becoming more complex electronically than could ever be imagined. There are now many Electronic Control Units being implemented on vehicles which are each linked to separate networks and are sharing data on high speed buses. In order to handle the increasing processing bandwidth required, and to interface effectively with the many sensors and actuators on the modern motor vehicle, significant advances are being made in semiconductor technology. The types of systems which are becoming more complex will be defined along with the reasons for becoming so. ‘System chips’ are now being developed which can integrate together different types of semiconductor technology in order to reduce chip-count, size and increase performance and reliability.