This project focuses on the investigation of composite materials employing an epoxy matrix combined with waste materials from natural sources, specifically utilizing eggshells as an environmentally friendly composite component. The specimens were categorized into three groups: A, B, and C, each with distinct compositions. Category A encompassed specimens consisting of 20% eco-composite and 80% epoxy matrix. In category B, epoxy content comprised 75% while the eco-composite constituted 25%, and in category C, epoxy constituted 70% while the eco-composite formed 30% of the composition. Additionally, the project utilized sieves to control particle size, with sizes of 1.03 mm, 0.8 mm, and 0.651 mm. Upon analysis, the findings indicate that among the examined specimens, those containing 70% epoxy and 30% eco-composite, featuring a particle size of 0.651 mm, exhibited superior tensile strength and hardness. These promising mechanical attributes hold significance for applications in designing automotive components. This study's insights into the mechanical properties and structural characteristics of the composite material hold potential for informing the development of car parts, enhancing both performance and sustainability in the automotive industry.