Mercedes-Benz begins volume production of axial flux electric motor

Mercedes-Benz has initiated mass production of its innovative axial flux electric motor at the Berlin-Marienfelde facility, marking a significant milestone in electric vehicle technology. This new motor will debut in the Mercedes-AMG GT 4-Door Coupe, an all-electric high-performance model. Unlike traditional radial flux motors, the axial flux design features electromagnetic flux running parallel to the axis of rotation, with a disc-shaped layout that sandwiches the stator between two rotors. This configuration allows for a more compact motor with higher power and torque density, offering greater flexibility in integrating the drivetrain. The axial flux motor technology stems from a prototype developed by British specialist YASA, which Mercedes-Benz acquired in 2021. Transitioning this advanced design into full-scale production demanded the development of precise manufacturing processes to maintain quality and performance. The AMG GT 4-Door Coupe employs three such motors: a 9-centimetre-wide unit on the front axle and two 8-centimetre-wide units on the rear axle, all integrated within Mercedes’s High Performance Electric Drive Unit that combines the motors with a planetary gearbox in a single housing. Performance figures for the Mercedes-AMG GT 4-Door Coupe are impressive, with a combined output of 860 kW, enabling acceleration from 0 to 100 km/h in just 2.1 seconds and a top speed reaching 300 km/h. The vehicle also boasts an estimated range of 696 km under the WLTP cycle, underscoring the efficiency benefits of the axial flux motor design. These specifications position the car as a formidable contender in the electric performance segment, blending cutting-edge technology with practical usability. Mercedes-Benz Group Board Member Michael Schiebe highlighted the launch as a pivotal step in bringing electromobility innovations into industrial production, signalling a broader transformation within the German automotive sector. German Federal Minister for Transport Patrick Schnieder echoed this sentiment, emphasising the importance of mastering axial flux technology for maintaining Germany and Europe’s competitive edge in the premium automotive market. The production start in Berlin-Marienfelde is seen as a strong indicator of the country’s industrial strength and commitment to future mobility solutions. Looking ahead, the successful industrialisation of axial flux motors by Mercedes-Benz could pave the way for wider adoption of this technology across the electric vehicle industry. Its compact size, high power density and flexible packaging options may influence future electric drivetrain designs, potentially accelerating the shift towards more efficient and powerful electric vehicles. The Berlin-Marienfelde plant’s achievement sets a benchmark for innovation and manufacturing excellence in the evolving landscape of electric mobility.