Last night Tesla rolled out update 2024.26.15 which included FSD v12.5.1.4. Although the release notes remain the same with this update, the big news is that Tesla has finally added support for hardware 3 vehicles to this FSD 12.5 version.
Once the release went out, we heard rumblings early on that update 2024.26.15 may add support for hardware 3, however, today we’ve been able to confirm that Tesla has HW3 vehicles running this latest FSD update.
Elon Musk initially said that FSD 12.5 was expected to be available for HW3 in about 10 days after it rolled out to AI4. Although that date has come and passed, it finally arrived for employees last night. Although It’s only been about three weeks, it felt like an eternity for HW3 owners who have been anxiously awaiting this update. Many owners weren’t sure whether their vehicles would be able to run the latest version of FSD once the original goal of 10 days was missed. This is one area where Tesla can stand to improve — consumer communication.
Rollout Plan
Although Tesla has internal HW3 vehicles running update FSD 12.5.1.4, their public rollout plan may not go to HW3 vehicles initially. Tesla may choose to roll out the update to vehicles with HW4 first to confirm there are no regressions before proceeding with the launch on HW3 vehicles.
Keep in mind that not every release that goes to employees ends up going out to the public. However, most releases usually start rolling out to early-access customers within a few days if there are no major issues.
HW3 vehicles are currently running FSD v12.3.6, while most HW4 (AI4) vehicles are running FSD v12.5.1.3. FSD v12.5 in general includes a huge array of optimizations and is supposed to be as big an improvement as the capability jump between v11 and v12.
We don’t expect any new features in FSD v12.5.1.4 besides HW3 support as that would complicate solving any potential regressions. However, we’re still awaiting several new features that come in a later version of FSD v12.5 such as nag-less FSD using sunglasses, FSD support on the Cybertruck, improved lane changes, end-to-end neural networks on the highway, and even Actually Smart Summon.
What’s Included & Who’s Eligible
This update is based on Tesla’s 2024.26 code branch, meaning that everyone who subscribes or owns FSD will be eligible to receive it. Tesla is already testing update 2024.32, but it hasn’t gone out to customers yet.
FSD V12.5 rolled out to AI4 vehicles much earlier than hardware 3 vehicles – as code optimization was required to have the FSD model run on the older hardware. It seems that the extra compute offered by AI4 vehicles has allowed Tesla to release V12.5 faster, which also helps them gather more data.
Now that HW3 support has been released, this could set the new tempo for new updates. Major FSD updates – V12.6 or V12.7 will likely also have AI4 support before hardware 3 support, as it seems easier to develop with more hardware power and then later optimize code once you have a working product. However, Tesla has committed to maintaining hardware 3 support, even if the code requires optimization to function on older hardware.
Divergence
AI4 only really started rolling out in the middle of last year, with most customer vehicles arriving with AI4 near May 2023. The optimization gap has been a surprise, especially since AI4 is still running hardware 3 in emulation mode. There will be a divergence between AI4 and Hardware 3, and Elon has mentioned that the new supercomputer cluster will be dedicated to preparing for AI4, and in the future, AI5.
This is going to be a big one for most people – after all, we’re estimating that nearly 85% of Tesla’s current fleet, if not more, is still on hardware 3. Did Tesla manage to fit the complete AI model, with all its parameters – a 6x increase over V12.3.6 – onto Hardware 3?
If there were compromises, we’ll need to watch and see. Hopefully, some enterprising Tesla X or YouTube owners will record a test drive on v12.5.1.4 on both, a HW3 and AI4 vehicle for us to compare the differences. We’re hoping that since the official divergence of hardware hasn’t happened yet, at this point, we won’t see any differences.
Upcoming Features
Once FSD v12.5 rolls out to hardware 3 vehicles, we can look forward to the upcoming list of features, including more natural and better-planned turns, the E2N highway stack, and vision-only monitoring with sunglasses. Of course, there are a few other hotly anticipated features we’re waiting for, but which aren’t on the Upcoming Improvements list provided in the patch notes – including Park Seek and Banish Autopark, as well as vehicle-to-fleet communications and FSD understanding hand gestures.
We’re hoping to see these features come in point releases of FSD V12.5, which means they should arrive at similar times for HW3 and AI4 vehicles.
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A recent sighting at Giga Texas by drone operator and detail hound Joe Tegtmeyer has really caught our eye. A red Model Y was driving within the factory premises with its front and rear sections heavily camouflaged in Tesla’s standard black coverings. To top it off, there wasn’t just one, but two vehicles.
Tesla usually conceals vehicles when it has something to hide or test, and this timing suggests to us that a new variant of the world’s best-selling SUV is on its way. This leads us to two theories - a refreshed Model Y Performance or the anticipated, more affordable E41 Model Y.
Caught something interesting today … two heavily camouflaged cars driving on the W side of Giga Texas. Several viewers noted this in my short video on the autonomous drive.
— Joe Tegtmeyer 🚀 🤠🛸😎 (@JoeTegtmeyer) May 14, 2025
The front fascia, headlights, and hood are almost entirely obscured, with similar coverings applied to the rear, hiding the taillight design and bumper. This is a classic practice to keep new design elements under wraps before an official unveiling, and this is exactly what we saw with the Model 3 Highland and Model Y Juniper projects. The rest of the vehicle, including the central body and roofline, appear fairly consistent with the current Model Y.
Refreshed Model Y Performance?
One compelling possibility is that Tesla is preparing for the launch of the refreshed Model Y Performance. This speculation gains traction when we look at the launch of the refreshed Model 3 Performance. The Performance variant launched several months after the Long Range AWD and RWD variants and came with a bespoke front fascia. That fascia included air ducts for improved aerodynamics and brake cooling, helping to differentiate it both visually and by performance from other refreshed Model 3s.
It stands to reason that Tesla is preparing to launch the refreshed Model Y Performance. The extensive covering on the front fascia could be hiding a more aggressive, aerodynamically optimized bumper and air ducts to match the Model 3 Performance.
More Affordable Model Y?
Alternatively, this mystery vehicle could be the prototype of the previously discussed affordable variant of the Model Y, known as E41. Tesla has been working on further cost reductions for its highest volume vehicle, which includes cost-cutting components and features, as well as working on manufacturing efficiencies.
Tesla is focusing on making its existing models, like the Model Y, more affordable. In this case, the camouflage might be concealing simplified exterior features designed to help reduce production costs. This could include a revised front-end design, along with different headlights or taillight assemblies. Tesla could even forgo the distinctive front lightbar, as well as the afterburner-style rear lightbar, if it contributes to worthwhile savings.
This would be a step beyond the recently introduced Model Y Long Range RWD, which improves the vehicle’s range and lower the price by $4,000.
For now, the identity of this camouflaged Model Y remains a mystery. The fact that it is out and about at Giga Texas suggests that whatever changes Tesla has incorporated are significant enough to warrant covering up the front and rear of the vehicle.
Tesla’s FSD has made some truly incredible strides since V11, and since FSD V12.5, the experience has been hands-free for vehicles with a cabin camera.
However, a persistent point of frustration for many users is the strictness of the Driver Monitoring System (DMS), often referred to as the “nag.” In a recent interaction on X, Mike P detailed his grievances about how strict the DMS was.
This post drew a response from Elon Musk, who said, “You’re right.” Just a few days and a relatively unassuming point release later, Tesla has already decided to take action to improve its DMS.
The core issue here, which many who use FSD can attest to, isn’t about wanting to be irresponsible. Instead, it is about the current system’s sensitivity. The DMS can feel overly punitive for brief, normal interactions with the vehicle’s center display.
User Experience Woes
Mike P’s experience was common - you can’t even glance at the display to change the song or add a nav stop without the DMS warning you to pay attention.
If you continue, then you risk receiving a FSD strike. This leads to most drivers disabling FSD and typing their destination in while manually driving. For the casual observer, you can tell that it is clearly far more dangerous.
This highlights a safety paradox: a system designed to ensure attentiveness can sometimes lead to less safe workarounds. One must acknowledge that Tesla is in an odd position, being incredibly cautious about safety and ensuring it stays within NHTSA guidelines. However, the nag today is overkill in some situations, such as glancing at the center screen.
Tesla Confirms Change
Musk’s relatively concise answer resonated with his previous outlook on the matter. During Tesla’s Q1 2025 Earnings Call, he acknowledged that the DMS can be too strict and mentioned that Tesla is actively looking into ways to loosen those restrictions. He also pointed out the irony between the current system encouraging users to disengage FSD for simple tasks, only to re-engage it moments later - a less-than-safe cycle.
In a post on X, Ashok Elluswamy, Tesla’s VP of Autopilot AI, delivered welcome news. He confirmed that the latest FSD update, V13.2.9, includes a loosening of the cabin camera nag. This is an undocumented change, and one that we’re very excited to see.
This undocumented change is the latest step in Tesla’s overall plan forward Unsupervised FSD, which would drop the DMS completely. Previous updates, like the shift to vision-based driver attention monitoring in V12.4 and V12.5, aimed to balance safety with user experience.
What Does This Mean?
While the full extent of changes in V13.2.9 will become clearer as Software Update 2025.14.6 rolls out to more FSD users, the confirmation of loosened cabin camera nag suggests a few things.
This likely means greater tolerance for brief glances at the screen for essential tasks, whether it be adjusting climate settings, inputting a nav destination, or changing the current song. It could also include a potentially more forgiving threshold for looking away, especially in low-speed scenarios. The DMS does not ding you for using the display or looking away while the vehicle is waiting at a red light today, but Tesla could expand this to driving under 10 mph (16 km/h).
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