Tesla Model 3 and Model Y to have faster processors, 12v li-ion battery and more

New Tesla Model Y Performance models coming out of China this month have the biggest changes we've seen to the car so far. The cars have several major hardware changes that improve the infotainment system, noise isolated and more.

Tesla starts using 12v lithium-ion batteries

JayinShanghai/Twitter

Infotainment Processor

The first major upgrade is the processor that powers the car's infotainment display. It has been upgraded from the Intel Atom processor to a much faster AMD Ryzen chip. It's the same chip that's used in the redesigned Model S and X, although the Model S and X feature 16GB of ram while these new Model Ys appear to have only 8GB.

This processor is much faster than the Atom processors that are currently in Model 3s and Model Ys.

Graphics Processor

The new Model S and X feature a dedicated GPU that is capable of PS5-like graphics. The system is able to play one of the most intensive video games, Cyberpunk 2077.

We thought that this chip would be exclusive to Tesla's higher-priced vehicles, but surprisingly, the new Model Ys feature the same graphics processor in the new Model S and X.

.@xiaoteshushu GigaWorkshop Tear-down of Tesla MIC Model Y Performance.

First look inside the new MCU component, GPU (AMD Ryzen) is the same as Model S Plaid.#Tesla #TeslaChina #ModelYPerformance $TSLA @teslacn @elonmusk @AMDRyzen pic.twitter.com/boiDbIiuw0

— Jay in Shanghai ?? (@JayinShanghai) November 28, 2021

It appears that Tesla plans to keep the infotainment and graphic processors the same across their entire lineup of cars. Having such an advanced processor will surely open up the possibilities to new games and enhanced capabilities in the car.

MCU 3

When the Model S was unveiled, it contained this new processor and high-end gaming capabilities. At the time, no one was sure whether this hardware would be exclusive to the Model S or whether it would trickle down to other vehicles.

Tesla MIC Model Y Performance First Look！

Does AMD Ryzen seem to make the new MIC Model Y Performance look smoother than ever?

What do you think?

AMD YES？

(Video shared by users in our community group) $TSLA @elonmusk pic.twitter.com/0kfLm2G6vo

— 42HOW (@42how_) November 26, 2021

However, at this point it's fairly certain that the AMD Ryzen chip and graphics processor Tesla is using will be a part of Tesla's MCU 3 and will be used across their entire fleet.

Software

Although the new Model Ys coming out of China contain the same CPU and GPU processors as the new Model S, they still feature the same 15" screen as other Model Ys. They also still use the same user-interface as all current Model Ys, although they're certainly capable of running the same Tesla interface in the new Model S.

It's not clear whether the new interface is still being adapted for slightly smaller screens, but we expect that these new Model Ys with MCU 3 will be running the updated Tesla interface in the future.

We don't know if vehicles with MCU 2 will be able to run the updated interface at some point. Tesla employees have previously said off the record that MCU 2 isn't capable of running the new interface found on the new Model S, but it's possible that Tesla figured out a way to run the new interface on MCU 2 vehicles. If the new interface comes to MCU 2 cars, it'll likely need to be adapted to be able to run on slower hardware or limit some of its features, such as dragging and docking windows.

12v Battery

All Teslas up until the release of the redesigned Model S and Model X used 12v lead-acid batteries. This lower voltage battery is used to power door locks, electronics and other smaller items in the car that can't be run off of the high voltage battery.

The 12v lead-acid batteries in Model 3 and Model Ys are the same kind found in just about every other car. The battery is recharged off of the car's main battery. These lead-acid batteries last about four to five years, but we've seen them last only a couple years as well.

With the new Model S, Tesla switched to a lithium-ion based battery that is much lighter and lasts much longer than lead-acid batteries.

These new Model Ys coming out of GIGA Shanghai are coming with the same lithium-ion battery that is found in new Model S and X vehicles.

The battery is estimated to last the life of the vehicle and never needs replacing. This is a nice improvement and it's a great way for Tesla to reduce Tesla service visits.

It also helps increase customer satisfaction and lower the maintenance required for Teslas even further.

Although replacing a lead-acid battery in a vehicle isn't an expensive procedure, having a lithium-ion battery that doesn't need to be replaced is a nice improvement for all future Tesla owners.

It'll be interesting to see whether Tesla will be able to upgrade lead-acid batteries to their lithium-ion models in future service calls for any customers that need one replaced.

Other Changes

Another change that has been noticed in these new models is that the rear passengers windows now have double laminated glass similar to the front windows, to help further isolate road noise.

It's possible that there are other smaller changes in these new models as well, but these have been the major changes observed so far.

These hardware changes are currently exclusive to new Model Y Performance models coming out of China. Tesla slowly makes changes to its lineup throughout the year when possible, but the changes we're seeing here are major improvements to the vehicle.

You can be sure that all Tesla factories will adopt the same hardware changes we're seeing in China across all models in the coming weeks or months.

There has now been a video posted that compares how much faster MCU 3 is compared to MCU 2 when loading various apps.

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Tesla Launches FSD V12.6.2, Finally Available for HW3 Model 3

Not a Tesla App

Last night, Tesla released software update 2024.45.32.5, which includes updated versions of FSD for HW3 and HW4 vehicles. More specifically, this update includes FSD V12.6.2 for HW3 and FSD V13.2.5 for HW4 models (how to check if you have HW3 or HW4).

While there aren’t new features in this update and the FSD release notes remain the same, it does include bug fixes, which should help these FSD updates go to a wider audience.

HW3 Model 3

What’s most interesting about this update is that it’s the first time a version of FSD V12.6 is going out to the Model 3 with HW3. Previously, it was only available for the redesigned Model S, Model X, and Model Y. The Cybertruck has only ever been available with HW4, which makes the Model 3 the lone vehicle left out of the FSD 12.6 release for unknown reasons.

The FSD hardware for the Model 3 and Model Y is identical, but the camera placements shift slightly due to the different vehicle body shapes, so it’s possible that played a role.

After a long wait, Model 3 owners are finally getting a chance to try out End-to-End on the Highway, as well as many other improvements.

FSD V12.6.2 Improvements

FSD V12.6.2 shares the same changelog as V12.6.1 - so we’re not expecting major changes besides bug fixes on this particular release, at least for vehicles coming from V12.6.1. Instead, it seems the primary focus of this update is to address compatibility for the Model 3.

V12.6 is a big step upwards from V12.5.4.2 - and we did an in-depth comparison of V12.6 and V13 here. V12.6 brings End-to-End on Highway, improved behavior on City Streets, Smoother and More Accurate Tracking, as well as Speed Profiles on high-speed roads and highways.

Overall, V12.6 is far closer to V13 than it is to V12.5.4.2 - and it really does feel that way. It is an impressive feat from Tesla to make such big and positive changes for a platform that they’ve admittedly been having some difficulties in obtaining better results. However, this really underlines the fact that they’re still committed and trying very hard to achieve Unsupervised FSD even on HW3.

In fact, in an upcoming FSD update, HW3 vehicles will gain the ability to shift into and maneuver in reverse. This should also add other FSD V13 features, such as three-point turns.

The other bit of good news is that this latest FSD update is based on update 2024.45.32.x, which means that it will be available to all vehicles. While Tesla has released the next major update, version 2025.2, it’s currently only available internally. If you’ve been thinking about subscribing to FSD, now may be a good time, since you’ll qualify to receive the latest HW3 or HW4 FSD version once it rolls out widely.

Legacy Model S and Model X

While the update has begun to roll out to Model 3’s for the first time, at this point in time, we haven’t seen any legacy Model S or Model X vehicles included in this update. Those vehicles, for now, are still on FSD V12.5.4.2. 

However, we do expect Tesla to add support for these vehicles. The question is whether that’s included in this update or whether it’ll be a future release.

When Does It Arrive?

This update has barely started rolling out - the first vehicles started receiving the update last night in a small batch. However, we will hopefully see more waves in the coming days that will progressively get larger. Expect this update to take at least two weeks to go out to the majority of HW3 vehicles if major issues aren’t found.

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A Closer Look at the New 2025 Model Y Juniper Refresh

@tslachan on X

Now that the Model Y Juniper refresh has officially been announced in the Asia-Pacific markets, the initial vehicles from Giga Shanghai are starting to make their way to showrooms throughout the region.

And that means lots of new pictures. Let’s take a look at some of the latest close-up shots of the 2025 Model Y.

Light Bar Close-Up

Our first up-close look at the new front end of the new Model Y. This car is likely en route to a showroom prior to the start of Tesla’s big sales push for the Chinese Lunar New Year, and this is one of the closest and cleanest shots of the new front end.

The sharp new front of the Juniper

@DriveGreen80167 on X

The new front light bar is very visible, even when it’s off. It’s more than a thin strip of lights. The headlights are located directly below the light bar at either end. You can also see the new squared-away sharp lines - starting from the lightbar gaps and going up the hood. The new design looks far more aggressive and sharp when viewed at this angle.

Wheels

And the new wheels are pretty interesting, too - especially since they don’t seem to have full aero covers on them. We’re wondering if Tesla intends to introduce aero covers for these wheels later - or if they’ll just stay uncovered. They look pretty good - but the black hubcap in the center stands out against the rest of the wheel. Time will tell whether the clean black finish holds up with use.

We're a big fan of these new fan-blade wheels

@DriveGreen80167 on X

Either way, they’re pretty good looking - but we’d prefer to see them in an all black finish - similar to the Shadow Gemini’s that are currently available. Hopefully, once the Model Y refresh arrives in North America and Europe, that option will be available in addition to the Crossflow wheels.

Videos

Here is one of the first videos showing off the rear light bar.

$TSLA
The close-up rear lamp of the new Model Y has been shown to the camera. pic.twitter.com/LOtLw8oMLM

— Tsla Chan (@Tslachan) January 23, 2025

Another video below shows how the trunk will open:

A little show of the interior + trunk
#Tesla #ModelY $tsla @zhongwen2005 @TeslaNewswire @Teslarati @sprit420_69 @niccruzpatane @WholeMarsBlog pic.twitter.com/Ipbz36rYUT

— DriveGreenLiveGreen (@DriveGreen80167) January 23, 2025

Interior

The refreshed Model Y also brings a ton of changes to the interior. In addition to the Launch Edition exclusive dash, we also get a good shot of the new ventilated seats, as well as the return of the turn signal stalk.

The best interior shot we've seen so far

@DriveGreen80167 on X

The new Model Y also has the same new center console as the Model 3 Highland - with the two-part slider. For now, it seems like the Launch Edition will include rubber pedal covers - nothing fancy like the metallic ones available on the Performance variants yet.

Rear End Close-Up

On the rear end of the vehicle, we get a close-up view of the new reflective light bar. Tesla claims this is an industry-first, and it does look very cool. The actual light is located on the inside edge of the piece that overhangs the reflective portion. The reflective portion itself is painted to match the vehicle - and isn’t a glossy surface, but rather matte.

Gotta love that new reflective light bar

@DriveGreen80167 on X

In the next image, we can also see that the rear camera is mounted in a new location. It doesn’t have the camera lip that the 2024 Model Y has been shipping with, as the camera is now mounted on the very edge of the new raised bumper. This also means the camera is much higher up than it previously was. This location change likely means that the new Y will require some additional training time for both FSD and Actually Smart Summon, as well as the new front bumper camera.

This is going to be an interesting change - we’re not sure how this new camera location will handle snow, rain, and road muck, but this is likely the main reason for it being moved up and away from the road.

The updated camera positioning is noticeably higher

@zhongwen2005 on X

We’re excited to see the new Model Y in person. This refresh has been a long time coming and there are many details that are still waiting to be discovered.

Customer deliveries are supposed to begin in just a couple of months - May at the earliest - in the Asia-Pacific region. We’re hoping to see the refresh arrive in Europe and North America by summertime and then see the launch of the Performance variant shortly thereafter.

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