Stellantis Expands Efficiency Innovations Across Electrified Models with Latest Patent

Stellantis, the automotive giant that merges numerous legacy brands, is making strides in electric vehicle (EV) technology with the development of multi-speed transmissions aimed at enhancing efficiency.

A recently published patent by the United States Patent and Trademark Office (USPTO) on February 27, 2025, reveals that Stellantis originally filed the application in 2023.

The patent focuses on integrating a second forward gear into electric drive modules, a significant shift that could improve performance and range for electric vehicles.

Stellantis’ patent isn’t confined solely to fully electric vehicles

The innovative design proposes using magnetic fluids containing ferrous particles to shift gears, a method that promises improvements over traditional hydraulically-actuated clutches.

This fluid’s responsiveness to magnetic fields enables a more efficient movement of the shafts that hold the gears, offering potential benefits in energy management and vehicle dynamics. Such technology, already seen in adaptive dampers, represents a forward-thinking application in the automotive field.

Notably, Stellantis’ patent isn’t confined solely to fully electric vehicles; it also encompasses electrified hybrids and plug-in hybrids such as the Chrysler Pacifica Hybrid and Jeep 4xe. This broader scope highlights the automaker’s commitment to improving efficiency across its entire electrified lineup.

The concept of multi-speed transmissions isn’t new entirely. The Porsche Taycan is a notable commercial example, employing a similar system with great success.

Other manufacturers like Mercedes-Benz and Lucid have also pursued patents for their own designs, while Volkswagen has opted not to adopt this approach. Meanwhile, Honda is taking a different route by developing a manual transmission for its upcoming 0 Series EVs to appeal to traditional driving enthusiasts.

As Stellantis continues to innovate in this space, the implications of their patent could pave the way for a new standard in electric vehicle technology, marrying efficiency with performance in an increasingly competitive market.