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 Robotaxi Improvements: Reduce Wait Time By Predicting Demand and Scale Operators

Not a Tesla App

Just over a week into the Robotaxi launch, Tesla began laying the groundwork for a more scalable remote supervision model, which will be key to achieving success with the Robotaxi Network.

About a week ago, Elon Musk posted on X that Tesla will likely reach the crucial safety threshold to enable this shift within a month or two. While that means at least another month of in-vehicle Safety Monitors, it does provide us with a timeline of what to expect.

As soon as we feel it is safe to do so.

Probably within a month or two. We continue to improve the Tesla AI with each mile driven.

— Elon Musk (@elonmusk) June 30, 2025

This timeline came in response to a question about Tesla’s plans for the ratio of autonomous vehicles to remote supervisors. The more vehicles that a single human can supervise, the better, especially if that number can be reduced to something drastic, like a 100:1 ratio. A single human operator would be able to manage an entire city of Robotaxis, which will be critical to make the Robotaxi Network turn a profit.

While Tesla works towards that ambitious future, it is also taking immediate steps to improve the current user experience during the Austin pilot program, where 15-minute wait times have become the norm.

Solving for Wait Times

According to Eric E, one of Tesla’s principal engineers on Robotaxi, the current 15-minute wait times are a classic logistics challenge. The supply of vehicles is lower than the current demand for rides. To solve this, there’s a two-pronged solution for Tesla.

First, Tesla is directly increasing supply by hiring more Safety Monitors/Vehicle Operators in Austin, even hosting an on-site hiring event.

We're looking to hire more Vehicle Operators in Austin, TX to accelerate Robotaxi deployment. We will be hosting an onsite hiring event next Thursday. Please consider applying to the official job posting and completing this hiring event form:

Hiring Event:…

— Ben Costa (@BenCostaTesla) June 28, 2025

Second, Tesla is working to make FSD and the Robotaxi fleet management software faster and smarter. This means they are utilizing the data from the pilot to better orchestrate the fleet by predicting demand and pre-positioning vehicles in prime locations to reduce wait times. After dropping someone off, the vehicle can start traveling to areas of higher demand, even if someone hasn’t booked a ride yet.

Next Up: Remote Supervision

These immediate fixes are all in service of that much larger goal. Scaling the Robotaxi Network isn’t just about having more cars; it’s about increasing the number of vehicles a single human can safely supervise remotely, which is a requirement for Robotaxi to turn a profit.

Elon’s comments give us this timeline. A more flexible and favorable ratio of 3:1 (although still far from the ideal 100:1) is likely to be achieved within a few months.

Tesla is committed to safety, as evidenced by the safety monitors in the vehicle. A single incident could not only tarnish the public’s view of the Robotaxi Network but could also halt Tesla’s operations altogether.

The data gathered from more Robotaxis on the road is crucial to the whole project. Tesla is gathering more data and issuing newer FSD builds specific to the Robotaxi.

As FSD requires less remote oversight per mile driven autonomously, Tesla can safely increase the number of vehicles per remote supervisor, moving the service closer to its ultimate goal.

Tesla has laid out an aggressive roadmap for the Robotaxi Network and its next few phases. We’ll have to wait and see just how this goes over the next few months, and whether they feel comfortable enough to increase the geo-fence and remove safety monitors.

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Tesla to Integrate xAI's Grok Into Optimus, Helping Bring the Robot to Life

Not a Tesla App

Following the recent news of Grok being almost ready for Tesla vehicles, Elon Musk confirmed on X that the next major step is with Optimus, Tesla’s humanoid Robot. xAI’s advanced Grok models will eventually serve as the voice and brain for Optimus. This will be a convergence of Musk’s two biggest AI ventures — Tesla and xAI.

This will combine a physically humanoid robot - the brawn - with the new brains, Grok. This integration is more than just giving Optimus a voice - it suggests that Tesla is thinking ahead and possibly intends to use Grok to understand the environment around Optimus, while FSD will handle the robot’s movements.

Already does

— Elon Musk (@elonmusk) June 25, 2025

A Symbiotic Relationship

The combination of Optimus and Grok creates a relationship where each component plays to its strengths.

For years, Tesla’s robotics team has been focused on the immense challenge of physical autonomy. Optimus learns complex tasks by observing humans, basically training itself through video by watching humans. This helps Optimus develop the physical dexterity needed to work in the real world. This is the brawn - the ability to navigate, manipulate objects, and perform useful work.

Grok provides the conversational brain. It adds a layer of natural language understanding, reasoning, and interaction. Instead of needing a computer, a specialized app, or pre-programming commands to give Optimus instructions, a user will be able to simply talk to it in a natural way. This makes Optimus infinitely more approachable and useful, especially for tasks in a dynamic environment, such as work or at home.

xAI and Tesla

Viewed from a different perspective, this move isn’t just about upgrading one product. It is the clearest evidence that xAI and Tesla are collaborating together to build a single, unified AI platform. Musk’s biographer, Walter Isaacson, believes Tesla and xAI will merge. Seeing Tesla and xAI both play critical roles in creating Optimus makes us believe that it may very well be the case.

Transformation to a Humanoid Robot

The confirmation of Grok in Optimus is one of the most significant milestones for the project to date. While Optimus’s ability to walk and work (and dance) is already an incredible engineering feat, it has all been physical abilities so far. Adding the ability to interact with Optimus in a human-like way will transform Grok from a machine to a true, general-purpose humanoid robot.

The ability to understand nuanced requests, ask clarifying questions, and respond intelligently is what will ultimately make Optimus a daily fixture in our lives.

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