AbstractIn the last years, the world is witnessing to a radical change in the development of the power, especially for what concerns industrial applications and, as a subsystem of these, the automotive one. The requests to reduce CO2 emissions due to the global warming, in part attributable to the usage of fossil fuels, are the main reasons for this improvement. Lower CO2 means reduction of consumptions and decreasing of environmental problems, and these aspects can be achieved working on the losses and pointing out alternative and green energy sources. Both these considerations lead to two challenging points that are at the base of contemporary industrial strategies: • to search for other sources of energy capable of helping and/or replacing fossil fuels;• to try to increase the efficiency of all the elements inside every mechanism.The thesis project here presented considers both these two points, focusing on the drivetrain, one of the most critical parts in terms of losses inside a vehicle.