<p>The connecting rod is a critical component in engines, serving to link the piston to the crankshaft and transforming the reciprocating motion of the piston into rotational motion. In modern engineering, the modelling and design of the connecting rod play a key role in enhancing engine performance and efficiency. As engine designs become more sophisticated, understanding the stress distributions, deformation patterns, and forces acting on the connecting rod under specific operational conditions is crucial. This study focuses on these aspects to better understand the mechanical behaviour of the connecting rod and optimize its design for improved engine reliability and performance. The initial phase involved mathematical modelling to calculate the rod’s dimensions and the forces it must endure, based on engine specifications. This was followed by the creation of a 3D model and tetrahedral meshing in ANSYS 2024R1, utilizing finite element analysis to assess the total deformation, von-Mises stress, and normal and shear stress distributions along the X, Y, and Z axes. The analysis revealed key areas with high stress concentrations and maximum deformation, contributing valuable insights into the mechanical behaviour of connecting rods. The findings support the development of optimized designs for improved engine efficiency, reliability, and performance.</p>