Stellantis Secures Patent for Three-Speed EV Gearbox

Stellantis Secures Patent for Three-Speed EV Gearbox​

New Gear Reducer Boosts Off-Road Torque, Towing, and Drive Efficiency​

Stellantis (FCA US, LLC) has officially been granted a U.S. patent for a newly developed three-speed gear reducer for electric drive modules (EDMs), opening the door to smarter, more capable EV drivetrains across its brands. The patent on the United States Patent and Trademark Office (USPTO), filed on October 25, 2023, and granted May 1, 2025, outlines a compact but powerful solution aimed at delivering both off-road grunt and highway efficiency—two performance goals often at odds in today’s single-speed electric vehicle (EV) designs.

Stellantis Secures Patent for Three-Speed EV Gearbox

Stellantis secures a patent for a three-speed EV gearbox, enhancing electric vehicle performance and efficiency.

moparinsiders.com

 

[vbondjr1]

I think when this, and the semi-solid state batteries arrive for the STLA: Large vehicles, that's when we're going to see the Charger EV (and others) become decent vehicles. Imaging the Daytona Scat pack with it's 670hp, less weight and better gearing makes an already fast car even faster. While it's not conventional, it will be interesting to watch Mopar's EVs carve their niche in this world with whatever Stellantis North America cooks up.

 

[Archknight]

I stated from the mention of this 3 speed that it was for EVs but people seemed to think this was for hybrids, which made no sense whatsoever. A transmission like this only could be an upgrade to the current 1 speed they have.

 

[JMB]

Doesn't the gearing improve the efficiency of the battery due to different speeds?
Why not make a manual option for the charger EV???

 

[bill burke]

What about the reported three speeds in the upcoming Cherokee hybrid. Same?
Different? It could be a big deal for these hybrids and electrics. Maybe.

 

[Archknight]

What about the reported three speeds in the upcoming Cherokee hybrid. Same?
Different? It could be a big deal for these hybrids and electrics. Maybe.

This is the same transmission they have been talking about, it was never for hybrids. The Cherokee will likely get a ZF 8 or 9 speed hybrid transmission. They won't use the Punch DCT in the US because the North American markets hate DCTs.

 

[TripleT]

This is the same transmission they have been talking about, it was never for hybrids. The Cherokee will likely get a ZF 8 or 9 speed hybrid transmission. They won't use the Punch DCT in the US because the North American markets hate DCTs.

Cherokee will have the 1.6 with a 3 speed hybrid transmission

 

[vbondjr1]

For me, my thoughts are always going to be geared directly towards the Charger when it comes to most things. I'm starting to see a few on the roads around here in the Philadelphia area so there is a chance that these cars could start becoming common place just like other EVs. It is a good looking car and it has alot of potential even though is has a lot of negativity surrounding it. Being that the car was rushed to market by the Evil Overlord Tavares, I think once Stellantis really gets their feet under them and properly builds this car, I think the Charger, even the EV variant will be a really good car.
I'm doing my best to learn everything I can about it and I think this move with Factorial with the semi-solid state batteries is going to be a really good move along with the 3-speed gearbox. From what I understand without really understand the whole science and tech behind any of this. The Factorial batteries can charge from fast charging from 15% to 90% in under 20 minutes, maintaining that performance in sub-zero temperatures,, offer a major increase in driving range and reduce significant amounts of weight while still operating on the 400V system. It has been reported that the battery packs alone could shave 200lbs off of the vehicles weight and with the need for fewer structural and thermal management components needed, the new setup could reduce anywhere from 500 to 2,000lbs. With the Daytona weighing around 5,800lbs, simple math puts a 2,000lb reduction at 3,800lbs. To put that in perspective, a widebody Charger hellcat is reported to weigh in the ballpark of 4600lbs. a Telsa Model 3 Performance is reported to weigh just shy of 4,100lbs. The reduction in weight would not only improve efficiency (range) but give the car a major boost in performance, even without an increase in horsepower. Taking these improvements and then adding a 3-speed mechanical gearbox designed change driving dynamics along with increase range all point to a much improved vehicle that can offer better performance and efficiency all around. The car already has a few good features to it so adding all of this really makes for a better car. The car seemed to perform favorably during the one lap of America and during certain one on one race tests against other EVs even with it's shortcomings so I can only imagine what it can do with these kinds of upgrades.