Automotive Industry is a field where Embedded Systems are widely employed. Modern vehicles can contain up to 80 microprocessor-based systems, called Electronic Control Unit or ECU, they run millions of Lines of Code and they can represent the up to 80% of vehicle innovation. An important aspect, in terms of innovation, is the power saving. Some studies have proved that the power saving can have a positive impact on several parameters like the emissions: reducing the power consumption is possible to reduce the emissions by a math formula. One of solution to implement the power saving at vehicle context is to adopt the Partial Networking at communication level among ECUs.