In a significant leap forward for electric vehicle (EV) technology, Stellantis has patented a groundbreaking three-speed gearbox designed to enhance the performance of its future electric models, particularly those from Jeep and RAM. This innovation, filed in October 2023 and officially granted on May 1, 2025, aims to address the unique challenges of off-road driving and heavy-duty applications in electric vehicles.
How the Three-Speed Gearbox Works
The patented gearbox utilizes three planetary gears, each tailored to optimize performance in specific driving conditions:
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First Gear: Delivers maximum wheel torque, making it ideal for tackling steep inclines or towing heavy loads.
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Second Gear: Enhances control in low-grip environments, such as slippery or uneven terrain, ensuring better stability and handling.
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Third Gear: A “direct drive” mode that prioritizes efficiency at high speeds, helping to maximize range during long-distance travel.
While this technology is primarily intended for future electric 4×4 models from Stellantis, it’s worth noting that securing a patent does not guarantee immediate production. However, this development highlights Stellantis’ dedication to pushing the boundaries of EV innovation and meeting the diverse needs of its customers.
The Broader Context of EV Gearboxes
Stellantis is not the only automaker exploring gearbox technology for electric vehicles. Several other manufacturers have already integrated similar systems into their EV lineups to improve performance and efficiency:
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Porsche Taycan and Audi e-tron GT: Both feature a two-speed gearbox that balances rapid acceleration with extended range, showcasing the benefits of multi-speed transmissions in high-performance EVs.
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Mercedes-Benz CLA: Equipped with a two-speed transmission, it achieves an impressive 800 km autonomy while maintaining low engine RPM at high speeds, contributing to better energy efficiency.
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Hyundai Ioniq 5 N: Includes a simulated gearbox to provide a more engaging driving experience, mimicking the feel of a traditional manual transmission.
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Toyota: The company is also developing gearbox technology for its EVs, signaling a broader industry trend toward more sophisticated transmission systems.
Comparing EV Gearbox Technologies
To better understand the landscape of EV gearboxes, here’s a comparison of different models and their transmission types:
|
Vehicle/Model |
Gearbox Type |
Primary Purpose |
|---|---|---|
|
Stellantis (Jeep/RAM) |
Three-speed |
Off-road capability, towing, high-speed efficiency |
|
Porsche Taycan |
Two-speed |
Performance, efficiency |
|
Audi e-tron GT |
Two-speed |
Performance, efficiency |
|
Mercedes-Benz CLA |
Two-speed |
Autonomy, low RPM at high speeds |
|
Hyundai Ioniq 5 N |
Simulated |
Driving feel |
This table illustrates the diverse approaches manufacturers are taking to optimize EV performance through gearbox technology, each tailored to specific use cases and driver preferences.
The Future of Electric Vehicles
As the EV market continues to grow, innovations like Stellantis’ three-speed gearbox could play a pivotal role in making electric vehicles more versatile and capable. For off-road enthusiasts and those requiring heavy-duty performance, this technology could be a game-changer, bridging the gap between traditional internal combustion engine (ICE) vehicles and the future of sustainable transportation.
