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The new Tesla Model X is hiding an understated but incredible secret
The Tesla Model X may be the company’s flagship crossover SUV, but the vehicle has rarely gotten the spotlight this year. Even when Tesla refreshed the Model S and Model X, most of the attention was evidently focused on the Model S and its Plaid variant, which proceeded to destroy every comparable gas-powered vehicle in its class.
But as it turns out, Tesla has also made some notable improvements to the new Model X Long Range. The company has just not been highlighting them yet. Fortunately, and as shared online by electric vehicle enthusiast @tempermanant, Tesla’s application documents to the EPA have provided some hints as to what exactly changed between last year’s Model X series and this year’s refreshed flagship SUV.
https://twitter.com/tempermanant/status/1454011729982099456?s=20
It should be noted that Tesla’s filings for the 2021 Model X are only true for the Long Range variant, which has already started deliveries. Filings for the Model X Plaid, which features three electric motors and near-supercar performance, are yet to be made available. This is quite different from Tesla’s filings for the 2020 Model X, which represented both the base Model X Long Range Plus and the top-tier Model X Performance.
A look at the documents shows that the refreshed Model X is lighter than its predecessor, with the new flagship SUV having a curb weight of 5,219 lbs. compared to the 2020 Model X Long Range Plus’ 5,437 lbs. This ~4% weight reduction seems to be partly due to the fact that the new Model X’s battery is ~14% lighter than last year’s Model X Long Range Plus. Tesla’s filings note that the new Model X is fitted with a battery that weighs 537 kg (1,183 lbs). In comparison, the Model X Long Range Plus featured a battery that weighed 625 kg (1,377 lbs).
-->Tesla Model X refresh gets in-depth exterior and interior walkthrough [Video]
Despite being lighter, however, the new Model X Long Range is about 30% more powerful than its Long Range Plus predecessor. The new Model X now features two AC Permanent Magnet Motors, with the front being rated at 243 kW and the rear being rated at 248 kW. This is quite an improvement over the Model X Long Range Plus, which featured a front AC Permanent Magnet Motor rated at 180 kW and a rear AC Induction Motor rated at 189 kW.
What is quite interesting here is that Tesla’s filings for the new Model X are so far only true for the flagship crossover SUV’s base variant. Needless to say, Tesla’s filings for the Model X Plaid would likely be even more compelling, and it would likely show even more drastic improvements compared to the already stellar 2020 Model X Performance. For context, last year’s Model X Performance was listed with a front AC Permanent Magnet Motor rated at 151 kW and a rear AC Induction motor rated at 273 kW. It would not be a surprise if the Model X Plaid’s three electric motors end up blowing these specs out of the water.
Check out Tesla’s filings for the new Model X Long Range in the document below.
2021-Model-X by Simon Alvarez on Scribd
-->And Tesla’s filings for last year’s Model X Long Range Plus and Model X Performance could be viewed below.
2020-Model-X by Simon Alvarez on Scribd
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Tesla Semi factory looks almost complete during Thanksgiving weekend
Based on recent drone videos, the Tesla Semi factory looks practically ready to start operations.
It appears that the Tesla Semi factory near Giga Nevada is already hard at work preparing for the initial production of the Class 8 all-electric truck. This was, at least, hinted at in a recent drone flyover of the facility from a longtime watcher.
The Tesla Semi factory after Thanksgiving
Drone operator and Tesla Semi advocate @HinrichsZane recently shared some footage he captured of the upcoming facility during the Thanksgiving weekend. Based on his video, it appears that Tesla gave its employees in the area the weekend off. One thing is evident from the video, however, and that is the fact that the Tesla Semi factory looks practically ready to start operations.
The Tesla Semi watcher did point out that the electric vehicle maker is still busy bringing in production equipment into the facility itself. Once these are installed, it would not be surprising if initial production of the Tesla Semi begins.
A new Tesla Semi
The upcoming completion of the Tesla Semi factory near Gigafactory Nevada seems all but inevitable in the coming months. What would be especially interesting, however, would be the vehicles that would be produced on the site. During Elon Musk’s presentation at the 2025 Annual Shareholder Meeting, a glimpse of the production Tesla Semi was shown, and it looks quite a bit different than the Class 8 all-electric truck’s classic appearance.
As could be seen in the graphic from the CEO’s presentation, the updated Tesla Semi will feature slim lightbar headlights similar to the new Tesla Model Y, Cybertruck, and the Cybercab. Tesla also teased a number of aerodynamic improvements that increased the truck’s efficiency to 1.7 kWh per mile. Extended camera units, seemingly for FSD, could also be seen in the graphic.
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Tesla scores major hire as Apple scientist moves to Optimus team
Chen, who advanced from individual contributor to technical lead during his time at Apple, noted that he was blown away by Tesla’s efforts and synergy.
Former Apple research scientist Yilun Chen has left the tech giant to join Tesla’s Optimus AI team. Chen, who advanced from individual contributor to technical lead during his time at Apple, noted that he was blown away by Tesla’s efforts and synergy.
Apple veteran closes a major chapter
In a farewell note, Yilun Chen reflected on his tenure at Apple as a period defined by rapid growth and exposure to notable internal projects, some of which remain unreleased. His roles spanned engineering, research, early product incubation, and hands-on prototyping, allowing him to build expertise across both mature and emerging teams.
Chen credited mentors, colleagues, and cross-functional collaborators for shaping his trajectory, calling the experience unforgettable and emphasizing how each team taught him different lessons about scaling technology, guiding product vision, and navigating fast-moving research environments. “Each role has offered me invaluable unique lessons… My deepest gratitude goes to my colleagues, mentors and friends,” he wrote.
Tesla’s Optimus lab secured the hire
Chen said the move to Tesla was driven by the momentum surrounding Optimus, a humanoid robot powered by LLM-driven reasoning and Physical AI. After visiting Tesla’s Optimus lab, he admitted that he was “totally blown away by the scale and sophistication of the Optimus lab and deep dedication of people when I got to visit the office.”
His first week at Tesla, he noted, involved spontaneous deep-tech discussions, a flat team structure, rapid prototyping cycles, and what he called a “crazy ideas with super-fast iterations” culture. Chen emphasized that the team’s ambition, as well as its belief that humanoid robots are now within reach, creates an energy level that feels aimed at changing the world.
-->“You can feel the energy to change the world here,” he wrote in a post on social media.
Elon Musk
Elon Musk gives nod to SpaceX’s massive, previously impossible feat
It was the booster’s 30th flight, a scenario that seemed impossible before SpaceX became a dominant force in spaceflight.
Elon Musk gave a nod to one of SpaceX’s most underrated feats today. Following the successful launch of the Transporter-15 mission, SpaceX seamlessly landed another Falcon 9 booster on a droneship in the middle of the ocean.
It was the booster’s 30th flight, a scenario that seemed impossible before SpaceX became a dominant force in spaceflight.
Elon Musk celebrates a veteran Falcon 9 booster’s feat
SpaceX completed another major milestone for its Smallsat Rideshare program on Friday, successfully launching and deploying 140 spacecraft aboard a Falcon 9 from Vandenberg Space Force Base. The mission, known as Transporter-15, lifted off two days later than planned after a scrub attributed to a ground systems issue, according to SpaceFlight Now. SpaceX confirmed that all payloads designed to separate from the rocket were deployed as planned.
The Falcon 9 used for this flight was booster B1071, one of SpaceX’s most heavily flown rockets. With its 30th mission completed, it becomes the second booster in SpaceX’s fleet to reach that milestone. B1071’s manifest includes five National Reconnaissance Office missions, NASA’s SWOT satellite, and several previous rideshare deployments, among others. Elon Musk celebrated the milestone on X, writing “30 flights of the same rocket!” in his post.
Skeptics once dismissed reusability as unfeasible
While rocket landings are routine for SpaceX today, that was not always the case. Industry veterans previously questioned whether reusable rockets could ever achieve meaningful cost savings or operational reliability, often citing the Space Shuttle’s partial reusability as evidence of failure.
-->In 2016, Orbital ATK’s Ben Goldberg argued during a panel that even if rockets could be reusable, they do not make a lot of sense. He took issue with Elon Musk’s claims at the time, Ars Technica reported, particularly when the SpaceX founder stated that fuel costs account for just a fraction of launch costs.
Goldberg noted that at most, studies showed only a 30% cost reduction for low-Earth orbit missions by using a reusable rocket. “You’re not going to get 100-fold. These numbers aren’t going to change by an order of magnitude. They’re just not. That’s the state of where we are today,” he said.
Former NASA official Dan Dumbacher, who oversaw the Space Launch System, expressed similar doubts in 2014, implying that if NASA couldn’t make full reusability viable, private firms like SpaceX faced steep odds.
Tesla Semi factory looks almost complete during Thanksgiving weekend
Tesla scores major hire as Apple scientist moves to Optimus team
