Global automotive industry is strongly driven by innovation necessities to comply with fuel economy regulations, emissions, performance and recyclability, so that the interest and utilization of composite materials is very high due to their unique mix of characteristics. This opportunity is taken in many parts of the car to ensure low weight, corrosion resistance, good energy, complex shape molding and vibration absorption; given these advantages, there are also drawbacks related to manufacturing cost optimization and process complexity which, by the way ,largely affects also the mechanical properties of the component: fiber orientation, presence of weld lines and defects play a major role in the final strength of the part and in damage onset.