GM’s group of three all-new Motors that will power its Ultium-based EVs

Designed by GM, the 180-kilowatt front-drive motor, 255-kW rear- and front-drive motor and 62-kW all-wheel drive assist motor are part of Ultium Drive. All three motors were calibrated in-house to ensure the highest level of performance in Ultium-based EVs. The motors were built as a scalable family, sharing design principles as well as similar tooling and manufacturing strategies.


The 180- and 255-kW units are permanent magnet motors designed with the aim of minimizing reliance on heavy rare earth materials while the 62-kW unit is an induction motor. All are expected to offer excellent torque and power density, enabling a wide spectrum of vehicle types, from performance cars to work trucks.

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The motors that will power GM’s Ultium-based EVs were built as a scalable family, sharing design principles as well as similar tooling and manufacturing strategies. Pictured are the stators of all three motors.

As many as three electric motors can be used in one EV – variations of the 2022 GMC HUMMER EV will feature three separate 255-kW motors, yielding a GM-estimated output of 1,000 horsepower1.


The team used computer-assisted and virtual engineering to move quickly, safely and in a cost-effective manner while also improving vehicle controls. Artificial intelligence and machine learning helped determine the most efficient ways to distribute torque in three-motor systems, like in the GMC HUMMER EV, allowing the extremely off-road capable vehicle to also drive comfortably on surface streets.


The software behind GM’s EV motors can be reused in many applications, providing fast go-to-market times as well as the foundation for future EV expansion, as these motors are versatile enough to provide the power needs for a complete lineup of vehicles.

GM also designed the software of key power electronics components – like the power inverter module or inverter, which converts DC voltage from the battery to AC voltage to power the motor. The HUMMER EV’s 0-60 mph acceleration in a GM-estimated approximately three seconds – Watts to Freedom mode2 –is largely due to GM’s electric drive software expertise in addition to its key competencies in motor controls, power electronics, motor design and development.


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