Hybrid electric vehicles can reduce fuel consumption by 40-50% compared to traditional vehicles. Researchers optimized the power system of a hybrid vehicle using a fuzzy logic algorithm to improve acceleration, climbing, engine efficiency, and reduce exhaust emissions. By controlling the engine's operation efficiently, fuel consumption was reduced by 5%, CO emissions by 50%, and engine efficiency improved by 15%. This strategy not only optimized the powertrain but also the internal combustion engine, motor, and battery pack, making hybrid vehicles a great alternative to traditional engines.