Over the years, automobile engines have evolved significantly in terms of fuel efficiency, environmental compliance, and passenger comfort. Among the key components influencing engine performance is the piston ring, which plays a vital role in sealing, heat transfer, and oil regulation within internal combustion engines. Advances in piston ring geometry, material composition, and design methodology have contributed to reduced inertial forces and longer operational lifespans. Additionally, modern engines often utilize fewer rings, each specifically engineered to fulfill critical functions. Commonly manufactured from cast iron or alloyed steels, piston rings must exhibit optimal mechanical strength and wear resistance. This study focuses on the structural design and evaluation of a piston ring suitable for a 1000 cc gasoline engine, using Cast Iron (CI) and Steel Alloy as candidate materials. The piston ring models were developed using 3D CAD software, and performance was assessed through finite element analysis. Key parameters, including von Mises stress and principal strain, were analyzed to identify the most efficient design and material combination for enhanced durability and mechanical reliability.