In today's world, the need for automobiles matches the need for their weight reduction. This led the inventors and researchers to an alternative solution, composites. Composites are known for their strength and light weight. Composite properties are the hybrid properties of two or more materials that mainly contain reinforcement and matrix. One of the reinforcement that is available in abundant in nature is Coir (coconut fibre). In this project we demonstrate the design and analysis of a leaf spring which is made up of coir reinforced polyester matrix composite. The main objective of this project is to reduce the weight of an automobile by replacing its steel leaf spring with composite leaf spring that would produce same deflection when the load applied is constant and compare its relative merits and demerits. The modelling of leaf-springs is done using SOLIDWORKS and analysis is done using ANSYS. © IAEME Publication.