German electric motor startup DeepDrive will present a new compact generator based on its dual-rotor technology at the IAA Mobility 2025, responding to increasing interest from car manufacturers seeking scalable range extender solutions for electric vehicles.
The new product, named MG 250, is a dual-rotor radial flow generator developed specifically for use in extended range electric vehicles (EREVs). The system combines a compact design with high torque density, offering a peak output of 150 kW and a continuous power rating of 120 kW. According to DeepDrive, the MG 250 achieves up to 96.9% efficiency and integrates an SiC inverter into its housing, enabling compatibility across 400 to 800-volt architectures.
“More and more manufacturers are looking for scalable transitional solutions,” said Alexander Rosen, co-founder and head of development at DeepDrive. “Initial discussions have resulted in a clear market impulse, and we are delighted to now be able to provide a response that is both technically and economically convincing.”
The MG 250 is designed to mount directly to a combustion engine’s crankshaft, eliminating transmission losses. It also functions as a starter motor for the engine, thanks to its high torque density and compact form factor — measuring just 31 cm in diameter and 16.5 cm in length, with a total weight of 24 kilograms including the inverter.
DeepDrive’s dual-rotor architecture combines internal and external rotors to increase energy density and reduce material usage, contributing to lightweight and cost-effective designs. The company previously applied this technology in its in-wheel and central drive motors, attracting backing from major automotive suppliers including BMW and Continental.
While range extenders have largely fallen out of favor in European markets, demand is resurging in regions like China, India, and the U.S., where EV infrastructure remains inconsistent. DeepDrive’s generator addresses this trend by offering a solution tailored to markets prioritizing flexible, transitional electrification strategies.
The MG 250 will be publicly revealed at IAA Mobility 2025 in Munich, where DeepDrive will also display its broader product lineup, including in-wheel and central electric drive units.