The Mercedes-AMG GT63 4-Door Coupe pairs an 860kW electric drivetrain with three axial-flux motors, two of them mounted side by side at the rear in a shared housing but each driving its own wheel. The powertrain was detailed at the car's launch in Spain, where AMG engineers walked through the hardware behind the GT55 and GT63.
Axial-flux motors from a British specialist, built in Berlin
The motors trace back to British specialist YASA, which Mercedes-Benz acquired in July 2021. According to René Szczepek, who handles driving dynamics simulation and integration at Mercedes-AMG, Mercedes-Benz now produces them at a factory in Berlin.
The axial-flux design differs from a conventional radial-flux motor: magnetic flux runs parallel to the axis of rotation rather than perpendicular to it, and YASA's arrangement places the stator between two disc-shaped rotors. That packaging freedom matters in a car where the motors must share space with suspension, brakes and crash structures. AMG puts the front rotor-and-stator arrangement's width at about 90mm, with each rear motor around 80mm wide, while the complete drive units also carry gearing, inverters and cooling equipment.
YASA says shorter windings and direct oil cooling help the motors hold output under sustained use, a point that matters because winding heat sets how much power can be delivered and for how long. Building the units in Berlin required roughly 100 production processes, about 65 of them new to the company, and Mercedes says the work has generated more than 30 patent applications.
Two rear motors, one housing, separate control
Housing the rear motors together simplifies assembly handling, Szczepek explained, but the two remain mechanically independent so their outputs can be controlled separately. That separation is the foundation of rear torque vectoring, where varying drive at each wheel shapes how the car behaves.
For AMG buyers, the engineering detail is arguably more revealing than the headline output. A single power figure says little about the machinery producing it, and cylinder counts and engine layouts no longer give electric AMG models the shorthand they once gave combustion ones. The axial-flux hardware, the cooling strategy and the separate rear drive control are the things that will define how the car actually drives.
Range, battery and price still to be confirmed
The sources detail the motors but not the rest of the electric package. Range, battery size and charging speed for the GT63 4-Door Coupe have not been announced in the material available, so no figure should be assumed yet.
Pricing and an on-sale date are likewise not stated in the source material, and the Spanish launch event is the only timing detail given. Buyers waiting on those numbers will need to wait for Mercedes-AMG to publish them.
