Aluminum alloys has been used by the automotive industry since many years but recently the demand has increased in response to a growing need for lightweight structural metals. Aluminum alloys are rapidly becoming a material central to vehicle manufacturing. In fact, aluminum is considered the fastest growing automotive manufacturing material. Using aluminum alloys is useful to reduce the automobile weight which produces minor fossil fuel consumption, lower CO2 emission and also an increasing of vehicle performance. This thesis project was born from collaboration between Politecnico di Torino and Centro Ricerche Fiat (CRF) department of Fiat Chrysler Automobiles (Stellantis). The aim of the thesis is focused on the high strength aluminum alloys for car body application used in the production of cars by FCA.