Automotive industry focuses its efforts to increase human safety and to reduce fuel consumption and pollutant emissions, in order to be in compliance with the more and more stringent environmental requirements imposed by governments. A large number of new electronic systems have been being developed over the years and Electronic Control Units (ECUs) represent the brain of the vehicles. Also internal combustion engine is mainly governed by embedded systems: the Engine Control Module manages the powertrain system, by controlling air-fuel ratio, fuel injection and ignition. The high complexity of the electronic architecture of a vehicle requires a time consuming and costly phase of simulation for verification and validation of the system.