The purpose of this Master's thesis is to explore the environmental impact of a mid-sized Plug-in Hybrid Electric Vehicle (PHEV) for road transport, produced both in China and Italy. Using Life Cycle Assessment (LCA), this study seeks for how different stages of the vehicle’s life - from raw material extraction to production and its use on the road - affect the environment, specifically in terms of the CO2 production rate. The goal is to understand how the energy mix and supply chain in each country influences the total carbon footprint and other environmental impacts like acidification and resource depletion. The state of the art is application of LCA of an ordinary PHEV using the latest version of Ecoinvent (2024) database for impact analysis, following international standards (ISO 14040 and 14044) and PCR 2024, and using a widely recognized method named the CML 2016.