The analysis of automotive circuits presents several unique challenges to design and test engineers. One of these challenges is prevalence of multiple technologies in automotive systems. This limits the use of simulation on these systems, since most simulation products are effective only in one technology. This paper demonstrates how a mixed-technology simulator can be applied to automotive systems, both for design analysis and testing. The Saber simulator was used because of its unique capabilities in the simulation and analysis of mixed-signal and mixed-technology systems.