18:10 01-10-2025

DeepDrive in-wheel motors tested on a Tesla Model 3 prototype

At the Salzburgring circuit, a one-off Tesla Model 3 prototype took to the track with innovative in-wheel motors developed by Germany’s DeepDrive. Engineers replaced the stock power unit with compact modules built around a dual-rotor, radial-flux design.

This approach removed the transmission, the differential, and part of the electronics, cutting frictional losses and freeing up space. Each wheel now has its own electric motor with regenerative capability of up to 1,000 Nm, which enables true one-pedal driving. The braking system is integrated into the module and is intended to require no maintenance over its entire service life.

The headline benefits are lower costs and higher efficiency. According to the developers, the new motors use 80% less iron, 50% fewer magnets, and avoid rare-earth materials altogether. Manufacturing costs drop by 30%, while energy consumption falls by 20%, which directly translates into a 20% gain in driving range.

On the move, the prototype does not give up ground to a standard Model 3. Despite adding 30 kg per wheel, the car retained its comfort and composure. The system can also distribute torque between the wheels in real time, a setup that is said to enhance stability in corners and even enables a tank-style pivot turn.

If these motors make it to production cars in 2025–2026, the EV market could change dramatically. More affordable, more efficient models with sports-car pace are exactly the kind of combination that could turn electric vehicles into the default choice for mainstream buyers.