The use of the microprocessor and integrated circuits to solve a multitude of automobile safety, pollution and fuel economy problems has unfortunately resulted in reliability problems caused by RF radiation. Electromagnetic Compatability (EMC) testing and appropriate design consideration can significantly improve this reliability. The success of any EMC test capability is dependent upon a good understanding of the RF radiation effects to the automobile and the electronic equipment required to simulate a wide range of radiated environments. EMC testing for the automobile has taken a new perspective in the past decade. As a result of the complexities of EMC testing, it is important to develop an automatic EMC Test System to get accurate/repeatable results. Automation of EMC testing now permits vast amounts of data to be recorded, processed, analyzed and problems solved in a short period of time.