UK firm's 98% efficient hybrid motor delivers record performance

Horse Powertrain, a London-based company, has developed a new hybrid transmission motor called the Amorphous Motor, which achieves an industry-leading efficiency of 98.2%. This high efficiency is made possible by using amorphous steel—a steel alloy with a disordered atomic structure that offers superior magnetic permeability and significantly lower core losses compared to conventional crystalline electrical steels. The motor’s stator is constructed from ultra-thin amorphous steel laminations just 0.025mm thick, about one-tenth the thickness of traditional motor steel layers, reducing losses due to eddy currents and hysteresis by 50%. The Amorphous Motor delivers a maximum power output of 140kW at 360Nm and contributes to a 1% reduction in whole-vehicle fuel consumption when integrated into hybrid powertrains. This efficiency gain supports automotive OEMs in producing low-emission vehicles, including range-extended EVs, hybrids, and plug-in hybrids, advancing the industry’s decarbon