The concern about the environmental impact such as global warming has driven the automotive part manufacturer in a paradigm shift from conventional fossil sources to renewable sources. In this study, the life cycle of miscanthus biochar (MB), as well as biochar and talc reinforced composites, have been evaluated, and the results are compared. The conventional material was chosen to be a talc reinforced polypropylene (talc-PP) at a 70% PP to 30% talc, and alternative bio-composite has MB reinforced PP (MB-PP) at a 70% PP to 30% MB by weight. The global warming potential (GWP) of the life cycle of MB is found to be 114.63 kg CO₂ eq/ton. Miscanthus cultivation is the main contributor in the life cycle of MB (93.3 kg CO₂ eq/ton) followed by pyrolysis (16.2 kg CO₂ eq/ton) and transportation (4.8 kg CO₂ eq/ton). This study also shows that MB reinforced composite had the least environmental impacts across all categories approximately by 25% compared to talc reinforced polypropylene composite. The main question addressed in this thesis is whether there are general environmental advantages of the use of MB-PP over talc-PP composites.