Efforts are made to increase the fuel economy and automobiles in turn reducing the emissions. Weight reduction of automobiles is the most focusing area especially suspension system made of Leaf springs which is most commonly used in Light duty, heavy duty and also in Electric vehicles. Three different materials rather than conventional steel namely chromium vanadium steel, E glass epoxy and carbon epoxy are considered for leaf spring. CATIAV5 software is used for modelling the leaf spring and Finite Element Analysis is performed using ANSYS finite element code. In addition to the weight reduction the designed leaf springs are analyzed to compare their Von misses stress, total deformation and strain. The Chromium vanadium spring shows 12% of weight reduction, E glass epoxy has 49% of less weight and carbon epoxy has 64% of less mass compared to the conventional steel spring. The von misses stress, displacement and strain rate of the composite leaf spring are lesser than the conventional leaf spring thereby conventional leaf springs can be replaced with composite leaf springs for mass reduction in turn for better fuel economy. © 2023 Elsevier B.V., All rights reserved.