Tesla's latest FSD Beta update is so good that it should skip the version 12.3 name and go right to v13. That at least, is the opinion of Elon Musk, who has a history of being overly optimistic.
Despite the same release notes as its predecessor, v12.2.1, Elon Musk has emphasized the substantial improvements in this version. It has been released to a select group of employees and customers.
The Promise of FSD Beta v12.3
While release notes for FSD Beta 12.3 mirror those of the previous iteration, Musk's assertion of its importance cannot be understated. Described as a "big release," 12.3 is expected to bring us closer to achieving levels 4-5 of autonomous driving. The core enhancement in v12 lies in the shift towards end-to-end neural networks for vehicle control, moving away from traditional programming methods. This change aims to facilitate more natural, human-like driving behaviors. However, Tesla hacker Greentheonly believes the “end-to-end” nature of v12 may be overstated. Does FSD v12.3 possibly get us one step closer to video in, and (vehicle) controls out?
Selective Rollout and Future Plans
FSD Beta 12.3's deployment remains very limited, much like any of the v12 versions. FSD subscribers in the U.S. and Canada (FSD subscription coming to Canada) are still on the holiday update, the same update from four months ago. Meanwhile, these subscribers are watching a few hand-picked beta testers demonstrate V12.
With this latest FSD Beta reaching only some Tesla employees and several hand-picked customers, it looks like Tesla is back to testing FSD releases with a special group. Just a few months ago, Tesla had two software tracks, the production track which included a stable version of FSD Beta and included the latest Tesla updates, and the “early” FSD Beta track, which had the latest public FSD Beta build but was often 2-3 firmware updates behind.
It looks like Tesla may have wanted to do away with that, but in the process has left all FSD customers on older firmware that doesn’t contain the latest FSD Beta build or the latest features in update 2024.2 or update 2024.8.3.
Maybe Tesla should consider giving customers the choice of development tracks. They already have the “Software Update Preference” setting in the vehicle that allows customers to pick from the “Standard” or “Advanced” software tracks.
FSD Beta: A Journey of Innovation
FSD updates used to be regular with builds often going out every two weeks. However, in the past year, the release cycle has slowed down to just a few FSD Beta updates per year. This extended delay in rolling out v12, which was first demonstrated by Musk last summer, may provide insight into how complex the new system is and how challenging it is for Tesla’s team of engineers. Despite delays and cautious rollouts, Tesla's dedication to refining and advancing its FSD technology remains unwavering.
Tesla recently launched software update 2025.8.3, which included a bunch of “minor updates.” Nestled away in the release notes are a couple of interesting features - including some major changes to the Energy App.
We’re not quite sure we’d call these minor updates, so let’s take a bit of an exploration of the revitalized Energy App.
The Energy App has received some new categorization features in the Consumption tab. You can once again limit the graph by distance. As part of the 2024 Holiday Update, Tesla redesigned the consumption tab and brought it to the new Model S and Model X for the first time. However, with the redesign, Tesla removed the ability to choose the distance shown in the graph, instead providing a static display of the last 200 miles (300km).
The first part of the improved Energy App is bringing back this distance filter. You can now choose between showing the last 10, 100, or 200 miles (15, 150, or 300 km). This differs from the previous available distances of 5, 15 and 30 miles, but brings back the ability for the driver to choose a distance that may be more applicable to how they’re driving.
We’d love for Tesla to introduce custom distances by pinching and zooming the graph or simply add the ability to choose “This Drive Only” to the list of available distances.
Reset Energy App History
@EV3_Model3 on X
Sadly, the “Instant Range” button that was available in the Energy App before is still not available, but Tesla introduced a new feature that may be even better. You can now clear your driving history so that the graph only reflects your current driving style.
This is a little hidden, but if you tap the little info icon at the top near your average Wh/mi, you’ll now be presented with a dialog that lets you clear your history.
This could be useful if you’ve just come from some hard driving on a track or off-road, where energy consumption could be exaggerated. It could also be useful if you just started towing or a different type of driving that is drastically different from your current driving.
Other Changes
In addition, it looks like future predictions of the Energy app now take into account your driving history and apply that in addition to expected vehicle consumption, weather, altitude, and the multitude of other factors that your Tesla constantly takes into account while calculating your expected range.
While these are smaller improvements to the Energy app, they added some important functionality, as it helps users better understand their vehicle consumption and display data that is more applicable to the current driving style.
This is a great example of Tesla listening to its customers and bringing back features they had previously been removed. Check out the video below by akide on the updated Energy app in update 2025.8.3.
Sandy Munro once again had the opportunity to chat (video below) with Lars Moravy, Tesla’s Vice President of Vehicle Engineering, as well as Franz Von Holzhausen, Tesla’s Chief of Vehicle Design. This time, rather than focusing on the improvements to the refreshed Model Y and all the new engineering behind it, the focus was on Tesla’s autonomous ambitions.
In this case, the Cybercab and Robovan were the key highlights, with a distinct focus on the Cybercab. With that all said, let’s dig into all the fun new stuff. You can check out the entire video at the end of the article.
Cybercab Unboxed Process
The Cybercab will be the first of Tesla’s vehicles to use their new unboxed assembly process, which builds vehicles in parallel sections, and then brings them together all at once for final assembly. Traditionally, vehicles are assembled from the ground up, and sometimes even disassembled for parts of production to take place.
This innovative method involves using a big rear and front casting, brought together by a structural battery pack on the floor. The door rings are hot-stamped and laser-welded to form the side shell of the Cybercab, resulting in a very rigid structure that can also absorb crash impacts due to its unique manufacturing.
Paint-Free Panels
We’ve already talked about the Cybercab’s unique paint-free panels, but we’ve never heard until now exactly how Tesla intends to manufacture them. Tesla will inject colored PU plastic onto the backside of another plastic part (formed from various processes) and then ultrasonically weld that entire piece to an inner part.
That essentially combines multiple parts into one smooth piece that is easy to repair - because all you have to do is remove the entire panel - it just comes off as the interior fasteners are removed. There is no subframe holding it together - instead, the subframe is part of the panel.
The only area of the vehicle that will have any paint will be the hot-stamped door rings - which will be painted to improve corrosion resistance to protect the steel.
Aerodynamics
Aerodynamically, the Cybercab boasts the largest aero-cover-to-wheel ratio of any Tesla vehicle. This updated aero cover improves efficiency, even with the Cybercab’s relatively large tires—chosen to reduce rolling resistance. Interestingly, the impact of unsprung weight on efficiency is minimal compared to the benefits of improved rolling resistance and aerodynamics.
Another key to the aerodynamics is the teardrop shape of the Cybercab itself. With its low profile and smooth shape, it is extremely aerodynamically efficient. While neither Sandy nor Lars delved into drag coefficients, we expect it will likely be more efficient than the Model 3’s already fantastic Cd of 0.219.
Range and Battery Pack
Tesla currently has prototypes undergoing real-world testing at Giga Texas to evaluate range and efficiency. The goal is to ensure the vehicle can operate throughout an entire day in the city before returning to charge.
Tesla is targeting a battery pack under 50kWh, delivering close to 300 miles of real-world range—an impressive efficiency of around 166Wh/mi, even outperforming the Model 3’s lowest at 181Wh/mi.
When Does It Arrive?
So, with all that new knowledge - when does the Cybercab arrive? Well - the prototypes for the June Robotaxi network deployment in Austin are getting prepared now - but Tesla expects to begin production and sales sometime in the first half of 2026.
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