Better, more durable, and more effective roads that avoid or minimise bituminous pavement distresses are desperately needed given the rising traffic and maintenance costs. In flexible pavements, the Stone Matrix Asphalt (SMA) mixes provide a long-lasting wearing course. The purpose of this research is to identify the optimal surface course for pavements and examine how additives affect the properties of SMA mixes. Natural fibres including coir, sisal, and banana fibres were the additions employed in this study. An first inquiry is carried out to describe the items used in this research. Indirect tensile strength testing and the Marshall Test are used to investigate the engineering characteristics of stabilised mixes and optimise SMA mixtures, respectively. It is deduced that the ideal fibre concentration for all fibre mixes, regardless of the kind of fibre, is 0.3% fibre by weight of mixture based on the volumetric and mechanical properties of the different stabilised combinations. However, the volumetric measurements in every stabilised combination fall within the specified range. Of the fibres used in the experiment, coir is the best; combinations of sisal and banana fibres exhibit similar stabilising properties. In order to boost trust in the material's field use, the current research aims to provide a short overview of the engineering behaviour of the SMA mixture with different natural fibres added as additives