Tesla’s new self-driving (HW4) computer leaks: Here’s a teardown
Tesla’s new self-driving computer, Hardware 4.0 (HW4), has leaked as the automaker appears to be already building some cars with the upgraded system.
Here’s a first teardown.
We have known that Tesla has been preparing an upgrade to its Autopilot/self-driving hardware for a bit now.
Most notably, Tesla filed with the FCC to add a new radar on its vehicles and said that it planned to start marketing it in January. A new radar would mean that Tesla plans to update its sensor suite for Autopilot and self-driving.
We have also heard that the automaker is changing its cameras, according to a filing with Chinese regulators.
Finally, Tesla is expected to produce a new self-driving computer to merge all those new sensors into a more powerful computing platform.
All these hardware changes have been stressful for Tesla owners since the automaker has been promising that all its vehicles built since 2016 have all the hardware necessary to achieve self-driving through software updates.
It turned out not to be true as Tesla needed a more powerful computer (HW3), but it did supply the retrofit to existing owners for free.
Now CEO Elon Musk confirmed that Tesla will not provide retrofit to HW4, but he said that the automaker still plans to deliver on its self-driving promises with HW3 and that HW4 will only push the performance higher.
Tesla Autopilot/Self-Driving Hardware 4.0
The teardown comes courtesy of Green The Only, a well-known Tesla hacker and tinkerer who has consistently revealed a lot of new information about Tesla vehicles by hacking the automaker’s software and tearing down its hardware.
In this case, he managed to get his hands on a new HW4 computer from a new Model X vehicle. We won’t go into details about how.
There are some indications that Tesla is implementing the new hardware suite in the Model X first with the automaker having just put up for sale its display and test drive fleet, which Tesla generally does later in a quarter. It could mean that Tesla is liquidating its Model X units in preparation for the new hardware.
Green started the teardown by confirming what Musk recently said: Don’t expect a retrofit.
Tesla’s self-driving computer is combined with its infotainment computer, which has also been updated with this HW4 upgrade.
Green said about the change:
Infotainment was reworked compared to current units. The GPU is now on the same board, so no more GPU daughterboard. This makes the whole unit thinner, otherwise no changes there – same 256G NVMe and 16G RAM, same AMD CPU and GPU.
As for Tesla’s actual HW4 computer, Green sees less improvement than what was hoped:
He did note that there are some improvements in security. Musk mentioned hackability of self-driving vehicles was a top concern at Tesla.
On the downside, the hacker’s own measurement shows that the new board has a higher power consumption than HW3 when idle.
Green noted that Tesla has also made improvements to the redundancy of the system, which is obviously important in a self-driving vehicle:
Redundancy is the name of the game this time? The board is mostly symmetric, with identical power connections on each side. There are even two network links to infotainment. Yet… if you unpower the A side, that kills the network switch and the link is lost. Still the improvements are there.
Now for what people have all been waiting for – the sensors.
Obviously, this is the computer and not the sensors, but the connectors can give us more information about the new sensors in HW4.
Now Tesla has been moving to a vision-based (cameras) approach and it has made a big deal of removing its radar and ultrasonic sensors.
There’s good news with HW4. Tesla appears to be including more cameras. There are currently 8 cameras in Tesla’s hardware suite, but now the new computer has connectors for 12 cameras, although one connector is marked as “spare.”
So we are talking about likely 11 cameras. Now as for the camera placement, it looks like all the current cameras remain other than a two camera setup in the windshield rather than the current three-front-facing camera setup.
While the information is hard to decrypt, Green sees indications that Tesla might have added cameras in the bumpers:
What’s SVC you might wonder? According to Tesla EPC, SVC is a bumper cover. So I’d guess these are bumper cameras. There’s a huge blindspot upfront on legacy cars up front (welcome to the legacy camp, Plaid owners!), so front bumper camera and two in the (rear?) bumper corners for cross traffic alerts (esp. with pillar moved forward)?
Green also found a connection for a new GPS module with a triband antenna:
The hacker noted about the new GPS unit:
The unit itself is big and unmarked, so who makes it is unknown, I would not be surprised if it’s somewhat custom Tesla thing. They carry a bootloader for it in firmware.
Finally, Green also found evidence of Tesla’s integrating a radar back into its sensor suite:
Musk told Electrek in June of last year after Tesla stopped using its radar:
The probability of safety will be higher with pure vision than vision+radar, not lower. Vision has become so good that radar actually reduces signal/noise.
However, the CEO also added that Tesla might still use radar if it had a “very high-resolution radar”:
A very high resolution radar would be better than pure vision, but such a radar does not exist. I mean vision with high res radar would be better than pure vision.
We saw some indications of Tesla working on that. We previously reported on Tesla looking to add a new “4D” imaging radar with twice the range of its previous radar.
That high-resolution radar was codenamed “phoenix,” so it might be the very radar that makes it to the new hardware suite.
It’s not clear when Tesla plans to make the new HW4 official, but the timing of the March 1 Investor Day makes it a likely contender for an official announcement.
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Renewables and nuclear provided 40.9% of the world’s power generation in 2024, passing the 40% mark for the first time since the 1940s, according to a new global energy think tank Ember report.
Renewables added a record 858 TWh in 2024, 49% more than the previous high in 2022. Solar was the largest contributor for the third year running, adding 474 TWh to reach a share of 6.9%. Solar was the fastest-growing power source (+29%) for the 20th year in a row.
Solar has doubled in just three years, providing more than 2,000 TWh of electricity in 2024. Wind generation also grew to 8.1% of global electricity, while hydro – the single largest renewable source – remained steady at 14% of global electricity.
“Solar power has become the engine of the global energy transition,” said Phil MacDonald, Ember’s managing director. “Paired with battery storage, solar is set to be an unstoppable force. As the fastest-growing and largest source of new electricity, it is critical in meeting the world’s ever-increasing demand for electricity.”
Ember’s sixth annual Global Electricity Review, published today, provides the first comprehensive overview of the global power system in 2024 based on country-level data. It’s published alongside the world’s first open dataset on electricity generation in 2024, covering 88 countries that account for 93% of global electricity demand, as well as historical data for 215 countries.
What drove the rising power demand
The analysis finds that fossil fuels also saw a small 1.4% increase in 2024 due to surging electricity demand, pushing global power sector emissions up 1.6% to an all-time high.
Heatwaves were the main driver of the rise in fossil generation, accounting for almost a fifth (+0.7%) of the increase in global electricity demand in 2024 (+4.0%), mainly through additional use of cooling. Without these temperature effects, fossil fuel generation would have risen by only 0.2%, as clean electricity generation met 96% of the demand growth not caused by hotter temperatures.
“Amid the noise, it’s essential to focus on the real signal,” continued MacDonald. “Hotter weather drove the fossil generation increase in 2024, but we’re very unlikely to see a similar jump in 2025.”
Aside from weather effects, the increasing use of electricity for AI, data centers, EVs, and heat pumps is already contributing to global demand growth. Combined, the growing use of these technologies accounted for a 0.7% increase in global electricity demand in 2024, double what they contributed five years ago.
Clean power will grow faster than demand
Ember’s report shows that clean generation growth is set to outpace faster-rising demand in the coming years, marking the start of a permanent decline in fossil fuel generation. The current expected growth in clean generation would be sufficient to meet a demand increase of 4.1% per year to 2030, which is above expectations for demand growth.
“The world is watching how technologies like AI and EVs will drive electricity demand,” said MacDonald. “It’s clear that booming solar and wind are comfortably set to deliver, and those expecting fossil fuel generation to keep rising will be disappointed.”
Beyond emerging technologies, the growth trajectories of the world’s largest emerging economies will play a crucial role in defining the global outlook. More than half of the increase in solar generation in 2024 was in China, with its clean generation growth meeting 81% of its demand increase in 2024. India’s solar capacity additions in 2024 doubled compared to 2023. These two countries are at the forefront of the drive to clean power and will help tip the balance toward a decline in fossil generation at a global level.
Professor Xunpeng Shi, president of the International Society for Energy Transition Studies (ISETS), said: “The future of the global power system is being shaped in Asia, with China and India at the heart of the energy transition. Their increasing reliance on renewables to power demand growth marks a shift that will redefine the global power sector and accelerate the decline of fossil fuels.”
Read more: Made-in-America solar just got a big win in Louisiana
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The next-gen LEAF is almost here, and it’s looking better than ever. This isn’t the electric hatch you are used to seeing. Nissan’s new LEAF EV has more range, a fresh crossover design, and yes, it can finally charge up at Tesla Superchargers with an NACS port. With the official reveal just around the corner, someone already spotted the new LEAF at a Tesla charger in Canada.
Nissan is launching the new LEAF in the US and Canada
A little over a week ago, we finally got our first look at the third-generation LEAF. Nissan’s iconic electric hatch has grown into a “sleek and spacious family-friendly crossover.”
The US and Canada will be the first to see the reimagined LEAF later this year. It will join the Ariya in Nissan’s North American EV lineup as it looks to spark growth in one of its most important markets.
Based on the CMF-EV platform, the same one underpinning the Ariya, Nissan promises the new LEAF will have “significant range improvements.” Although no other details were revealed, Nissan’s vehicle programs chief, Francois Bailly, told TopGear.com that it’s expected to have WLTP driving range of up to 373 miles (600 km).
It will likely be lower on the EPA scale, but anything even close to 300 miles would be a major improvement over the current 212 EPA-estimated miles offered on the 2025 LEAF SV Plus.
The next-gen LEAF will also be Nissan’s first EV to feature an integrated NACS charging port. With its official debut later this year, the new model is out for testing and was just caught testing at a Tesla Supercharger in Canada.
If you didn’t know what vehicle it is, the LEAF is hardly recognizable. The new image from KindelAuto gives us a closer look at the new crossover design. It almost looks like a Tesla sitting in front of the charger.
The new LEAF is one of 10 new and refreshed Nissan vehicles set to launch in the US and Canada. It will arrive later this year, followed by the fourth-gen Rogue in 2026, which will be available as a PHEV for the first time.
Nissan also plans to build a new “adventure-focused SUV” at its Canton, Mississippi, plant in late 2027. The teaser shows what appears to be a rugged electric Xterra. We’ll have to wait for more details on that one.
Nissan will reveal additional info about the upcoming LEAF mid-year. Check back soon for more updates.
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The Port of Barcelona launched the Ecocat Tres, a highly efficient, all-electric commuter ferry powered by Molabo’s ARIES i50 electric motors.
Ecocat Tres is the latest zero-emission ferry in Bus Nàutic’s growing electric fleet, providing clean transportation between the Drassanes and Llevant wharves. In just its first three months, the Bus Nàutic service logged over 125,000 sustainable trips. Operated by ALSA and backed by the Port of Barcelona, the initiative offers locals and visitors an eco-friendly way to travel, cutting down on road congestion and air pollution in the bustling city.
Built by Spanish shipbuilder Metaltec Naval, Ecocat Tres is a 15-meter aluminum catamaran that carries up to 84 passengers. It even includes a rooftop deck, offering extra seating and a breezy ride across the port. The ferry runs every 15 to 30 minutes for at least 12 hours each day, with the entire trip taking about 10 minutes.
Under the deck are two powerful 48V Molabo ARIES i50 motors, enabling the electric ferry to hit a top speed of 12 knots. Cruising at its regular operational speed of 5 knots, Ecocat Tres can run efficiently for up to 21 hours on a single charge, making it highly reliable for daily commuters.
Molabo’s motors have a low-voltage setup, which makes them safer to maintain compared to traditional high-voltage electric systems. Passengers also enjoy a smoother, quieter ride thanks to significantly reduced noise and vibrations onboard. Azimut Marine supplied the full propulsion and energy system, which includes two ARIES 50 kW electric drives, 36 batteries providing a total of 216 kWh, fast chargers, and integrated solar panels. Impressively, solar power alone can cover up to 40% of the ferry’s energy needs.
Ecocat Tres will cut around 90 tons of CO2 emissions each year, making a positive impact on Barcelona’s ambitious climate goals.
Port of Barcelona president José Antonio Carbonell said, “This 100% electric, zero-emission passenger ferry is helping us reshape mobility in the port and accelerate the decarbonization of our operations.”
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