High energy efficiency, being lightweight, quick start-up, and lower operating temperature make polymer electrolyte membrane fuel cells an excellent choice for automobiles. These devices can be more dependable and efficient in the long run if flow field plates continue to improve in the areas of reactant distribution, lower pressure drops, accurately optimized water content, and better heat management. The influence of a single serpentine flow field configuration with two different active areas on pressure drop and flow uniformity was studied numerically and theoretically in this study. This was done first by developing the flow field pattern in “SolidWorks”, and then by running simulations to see how the flow channel performed using commercial CFD software, “ANSYS FLUENT”.