Decreasing time to market for advanced technologies requires alternative methodologies for efficient vehicle testing, calibration, and research. This session demonstrates the complete modeling of a vehicle with an electrical system for integrating fuel-saving technologies, including stop/start, coasting, and regenerative braking using MATLAB, Simulink, Simscape™, and Stateflow. A modified vehicle model as well as real-time execution, S-Function Builder, MATLAB scripts, and supporting hardware are used to display capabilities. It is evident that advanced engineering will include modeling and systems simulation in order to remain competitive in the future.