Tesla Model Y Hardware 4 Teardown Reveals Cheaper Ram, Missing GPU and Camera Connectors

We get our first view at hardware 4.0 for the Model Y

Greentheonly/Twitter

In a recent series of fascinating tweets, @greentheonly provided an unprecedented look into the internals of Tesla's new Model Y Hardware 4 or HW4. With his expertise and knowledge, Green shared detailed observations on the HW4's physical structure, board components, and the viability of retrofitting older models, giving the Tesla community much to ponder.

Breaking Down the HW4's Structure

Green's exploration of the HW4's complexities commenced with him acknowledging an "anonymous donor" for providing a chance to look inside Model Y's HW4. The serial numbers and other identifiers were blacked out. Green stated it was done to protect the donor after previous experiences, "Tesla is vengeful like this and went after the guy that did hw2.0 teardown by trying to deny warranty on unrelated repairs. Does not help that this new computer now has a (borderline illegal) 'warranty void if removed' sticker."

Delving into HW4's Core: Circuitry and Components

First up on the dissection table was the computer's physical form factor. According to Green, the HW4's form factor mirrors those of the S/X models, putting to bed any speculation around a potential retrofit to HW3 cars.

Moving deeper into the HW4, Green revealed that the board layout is similar to the HW4 on the Model S. However, as Green termed it, specific components, including the GPU and superior sound hardware, are now missing or depopulated. The use of cheaper non-Error-Correcting Code ram (ECC RAM) also seems to be a cost-cutting measure implemented by Tesla in this version of HW4 on the infotainment system side. Interestingly, this version of HW4 features two additional but depopulated display connectors, hinting at possible a possible second display in the vehicle.

Other distinguishing attributes of HW4 include a reoriented BroadR-Reach ethernet and the addition of a third, depopulated ethernet. Moreover, Green pointed out that the gateway chip has changed, too, with a different model from another vendor now in use. This chip, which was only seen in Chinese-made boards previously, seems to be a standard feature in all Model Y HW4 boards now.

Retrofitting HW3 to HW4: More Than Meets the Eye

The idea of retrofitting HW3 cars with HW4 stirred up quite a debate. According to Green, the concept may sound enticing, but it's not as straightforward as it seems. Modifying the vehicle to accommodate the new coolant pipe locations would be necessary for a retrofit, likely making this option more costly than simply manufacturing a new board in the old form factor.

Uncovering the Hidden Changes

Apart from the apparent changes, Green shared insights into some of the subtle modifications made by Tesla. For instance, the Texas-manufactured Model Ys feature a plastic "firewall" requiring a change in mounting methods for the new HW4. Despite the internal components remaining the same, the different mounting technique necessitates a unique part number for the computer.

Other changes include the absence of premium features like ECC RAM and the HD radar, which is reserved for the S/X models. Also, there's a reduction in the camera connectors in the Model Y, contributing to the list of differences in the HW4.

The missing camera connectors were for additional cameras, such as a front bumper camera. However, as Green says, the absence of a connector doesn't mean that Tesla won't add them in the future. In fact, if Tesla had no intentions of adding such features, they wouldn't be available on the board at all, instead of just being unpopulated.

Implications for Current and Prospective Tesla Owners

For existing and future Tesla owners, these findings offer a clearer understanding of what to expect from the HW4-equipped Model Ys. Notably, questions still linger about additional cameras and if and when newer models will receive them. The Cybertruck prototype already has a front bumper camera, so it may only be a matter of time.

While it seems that retrofitting HW3 to HW4 may not be feasible due to the cost and complexity involved, Green isn't entirely ruling out the possibility. He believes a different version could theoretically be created for retrofits, although it's unlikely.

Tesla Launches New Long Range RWD Model Y in U.S.: More Affordable and Longer Range

Not a Tesla App

Tesla has finally launched the refreshed Model Y Long Range Rear Wheel Drive (LR RWD) in the United States. While the refreshed Model Y RWD was available as a Launch-Series option in the Asia-Pacific and European markets, it wasn’t yet available at all in North America. Once the Launch Series stopped being offered, Tesla began shipping non-Launch Edition Model Y LR RWDs in Asia and Europe earlier this year, but didn’t bring it to the United States until now.

The LR RWD is one of Tesla’s most affordable vehicles, starting at $44,990 (or $37,490 after the Federal EV Rebate).

Model Y LR RWD

Spec-wise, the refreshed Model Y LR RWD is a compelling alternative to the AWD model. Tesla has kept the premium interior and audio options on the North American variant, so you get the full experience of the refreshed Model Y. You also get more range and faster charging than the AWD model. The only downside is that it’s two-wheel drive and slower acceleration. However, given the lower price and additional range, those may be worth the tradeoffs.

*Listed ranges are EPA Ranges.

Pricing

All in all, you get a fantastic deal, given the lower price tag. The refreshed Model Y LR RWD is priced $4,000 less than the AWD version while still offering many of its attractive features.

*Post-tariff pricing.

Availability

The Long Range RWD is expected to begin shipping immediately in the United States. Tesla has not made the vehicle available in Mexico or Canada yet, likely due to tariff complications. Once the tariff rates settle, Tesla will likely look to export the vehicles from the U.S. to the other two North American countries.

With the arrival of the Long Range RWD variant, the last version we’re waiting for is the refreshed Model Y Performance. That’s likely to be an exciting vehicle, and we’re hopeful it will be in customers’ garages before the end of 2025.

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Tesla Introduces New Dynamic Supercharger Pricing

Not a Tesla App

Tesla is adjusting its Supercharger prices based on current usage in a new pilot program. Tesla’s pricing structure has typically revolved around traditional time-based peak/off-peak schedules but is now migrating to a more dynamic model based on live Supercharger utilization.

This development, announced officially through the Tesla Charging X account, should make Supercharger pricing more accurately reflect the demand for the specific Supercharger site instead of basing pricing on past usage.

Live Utilization Pricing

The core of this new pilot will launch at just 10 Supercharger sites in North America. The particular sites in question have not been clarified, but one of the locations is the Supercharger located in Davis, California.

Tesla intends to expand the pilot based on feedback and the success of the initial rollout. We could be looking at the future of Supercharger pricing around the globe.

New Chart and Features

Today, Tesla typically offers two or three prices based on peak and off-peak demand, meaning that Supercharger prices are based on the hour of the day. The current Supercharger chart in the vehicle shows the hours and price on the X-axis, while the Y-axis is the typical demand (image below).

The current chart for Superchargers versus the new one at the top of the page

Not a Tesla App

However, with the new charts that will soon be added to vehicles, Tesla will display the time on the X-axis, and the Y-axis will show the historical demand and the current price (photo at the top of this page).

In theory, the Supercharger's historical demand and real-time usage should be pretty similar, but there will be exceptions, like holidays and other events. Unexpected high and low usage will play a role in the pricing, such as sporting events and natural disasters. If the Supercharger is busy, then pricing will be high; otherwise, it will be low.

This also introduces a new feature, since pricing is now based on actual demand, users could navigate to a Supercharger that is less busy and, therefore, cheaper. In the hero image, we can see that Tesla will add a new “Find Lower Price Charging” button in a future vehicle update. This will likely highlight other nearby Superchargers that are less busy and less expensive.

However, it seems like Tesla may also start charging more for Superchargers than they do today when they’re extremely busy. Judging by the screenshot Tesla shared, the estimated usage never passed the $0.45 per kWh at the Davis, CA Supercharger. However, it seems that there’s a new price of $0.54 per kWh when the Supercharger usage is at its peak.

The good news is that Tesla is being more transparent and indicating whether the price is low or high with new labels. This change will give users more choices in terms of charging prices. If you want to save a few bucks, you can drive to a less busy Supercharger. The price will also be based on actual usage, which seems like a fairer way to determine price.

While Tesla hasn’t updated vehicles yet to show these new charts, the latest version of the Tesla app already incorporates the changes.

What Tesla Says

Max de Zegher, Tesla’s Director of Charging, elaborated on the pilot program on X.

He points out that Tesla Charging’s rates have been consistent, and it has focused on improving the charging experience and availability. Off-peak and on-peak pricing will help to increase both of these.

Tesla has outlined exactly how this new live feedback loop will function. The more accurate real-time station demand can allow Tesla to adjust pricing if a station is experiencing congestion during traditionally “off-peak” hours. On the flipside, if a station is unusually empty, Tesla can reduce the pricing.

This easily incentivizes customers who are keeping an eye on charging costs, as changing your charging destination can be as simple as the tap of a button. Most interestingly, Tesla says that the average price paid by customers is expected to remain the same as with the previous time-based system, even with seasonal and real-time fluctuations.

Crucially, owners can always see the price per kWh on their vehicle’s primary display, as well as in the Tesla app before initiating a charging session. Additionally, Tesla will not change the pricing mid-charge, so there’s no need to worry about it fluctuating up or down while you’re charging.

When reading some of our old blog posts, you'll find that @TeslaCharging has been consistent in its pricing principles: improving the charging experience and Supercharger availability. True to those principles, we're now piloting live site utilization for off-peak and on-peak… https://t.co/rIqQzOZfcG

— Max (@MdeZegher) May 6, 2025

Supercharger Pricing History

This move to live-based pricing is being presented as Tesla’s latest step towards managing its vast charging network with a more customer-centric approach. Tesla has had some historical progression in its pricing strategy, so let’s take a look at where we were versus where we are going.

kWh-Based Billing: Tesla has long pushed for billing by the kilowatt-hour (kWh) as the fairest method for customers to pay for the exact energy consumed, avoiding session fees that can obscure actual energy costs. This is now standard in most regions, but it wasn’t too long ago that pricing was determined by the minute.

Idle Fees (2017): To address vehicles remaining plugged in after charging was complete at busy sites, idle fees were implemented to improve stall availability – a practice now common across the industry.

80% SoC Limiter (2019): At busy locations, Tesla introduced an automatic 80% state-of-charge (SoC) charging limit (which users can manually override) to encourage faster turnover, as the final 20% of charging is significantly slower.

Time-Based Peak/Off-Peak Pricing (2020): Pricing based on estimated busy times was rolled out to incentivize charging during less congested periods, helping to distribute demand and manage costs.

Congestion Fees (2023): At particularly busy sites, congestion fees were introduced. These combine the principles of idle fees with disincentivizing charging to a very high state of charge when a station is crowded, with the stated goal of improving availability, not generating profit.

Commitment to Affordability

Alongside these pricing changes, Tesla has reiterated its focus on keeping Supercharging affordable for all its users. Tesla points out that, on average, in North America and Europe, Tesla’s Superchargers are 30% cheaper than other fast-charging options while also being far more reliable.

Beyond that, 2025 is set to be Tesla’s largest year for expanding the Supercharger network while also replacing many older V2 charging sites with faster, more capable V4 Supercharger stations.

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