Gear reducers are advanced systems designed to optimize the performance of battery-powered and fuel-cell vehicles. They also serve as vital components that complement conventional powertrains, making them especially suitable for P4-type hybrid vehicles. By integrating gear reducers, manufacturers can significantly enhance vehicle efficiency, reduce emissions, and improve overall performance. The importance of this technology cannot be overstated, as it plays a crucial role in supporting the automotive industry’s ongoing transition to electric and hybrid mobility.