This document summarizes a study that performed finite element analysis to compare a conventional alloy steel connecting rod material to a polymer composite material (PEEK) reinforced with 40% carbon fibers for use in automotive engines. A 3D model of a connecting rod from a Honda motorcycle engine was created in CATIA and analyzed under an axial load of 6500N in ANSYS. The PEEK composite showed significantly less total deformation, stress, strain, and fatigue damage compared to the alloy steel. It was concluded that the PEEK composite could withstand the maximum engine loads while providing benefits like reduced mass, friction, and potential to improve engine performance. The study demonstrated the feasibility of using composite materials instead of metal alloys for connecting rods.