Model-Based Design has become the preferred approach for developing automotive embedded software. This presentation describes the development of an engine setpoint controller using Model-Based Design and xPC Target™ Turnkey. The engine setpoint controller is designed to monitor engine rotation and other engine parameters and to control fuel, spark, and other engine actuators. The engine setpoint controller also allows control algorithms developed using Model-Based Design to be implemented and executed. Specific topics include the I/O driver designed with Simulink blocks, deployment of our custom VHDL^® code to the I/O module of xPC Target, and a human machine interface design for the engine setpoint controller.