An engine management system (EMS) is a unit that comprises of a set of sensors and an engine control unit (ECU). The sensors relay data to the ECU, which process the feedback and further send an output to the actuators and motors for performing the final task. There has been a constant evolution of the engine management system, from the use of limited number of sensors and an 8-bit microcontroller in ECU, to a vast range of sensors and 32-bit microcontroller used in the ECU. These systems have minimum feedback time and are more efficient than the older versions. There have been various factors which have led to this evolution, including the need for improved fuel economy, greater power requirements, increasing vehicle performance requirements, and enhanced driving experience. br This has resulted in the development and launching of new and advanced engine management systems such as the latest 32-bit Tricore microcontroller launched by a leading semiconductor company. To meet the growing need for fuel economy across the globe, and to follow the stringent emission norms in major regions, automakers are investing heavily in R&D of advanced EMS, which has led to a growth in the EMS market. br Factors driving the growth in the market for automotive EMS including rising demand for low carbon footprint technologies, enhanced driving experience (in terms of faster response time), and increased fuel efficiency provided by these systems. However, high cost of advanced engine management system due to complexity in programming of its functions is a key factor restraining its growth. br Complete report is available @ .