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SpaceX Starship prototype in limbo after engine test lights rocket on fire

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The fate of SpaceX’s fourth full-scale Starship prototype appears to be in limbo after a third (seemingly successful) engine ignition test unintentionally caught the rocket on fire.

Now more than 12 hours after Starship SN4 fired up its new Raptor engine, the ~30m (~100 ft) tall, 9m (~30 ft) wide prototype is apparently trapped with one or both of its propellant tanks still partially filled with liquid (or gaseous) methane and/or oxygen. An initial road closure scheduled from noon to 6pm local quickly came and went and SpaceX and Cameron County Texas have since modified the paperwork, extending the closure a full 24 hours. In other words, SpaceX has reason to believe that Starship SN4 may continue to be unsafe (i.e. pressurized) as many as ~30 hours after it technically completed its third static fire test – extremely unusual, to say the least.

There’s only one obvious conclusion to draw. Whether it was something invisible to the public eye or damage related to the off-nominal fire that burned for some 15 minutes after Raptor shut down, SpaceX appears – to some extent – to have lost control of Starship SN4.

At the moment, it’s unclear what is wrong and what SpaceX is attempting to do to resolve the problem. Based on photos of Starship SN4 taken before the fire, there is good news and bad news from what can be publicly ascertained. Controlled from the ground by unprotected wires strung up and down the rocket and connected at its base, the uncontrolled fire that burned in at least two locations around Starship’s aft may have severed some or all of those critical connections.

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Starship SN4’s third successful Raptor test caused a secondary fire that has put the vehicle in a state of limbo. (LabPadre)

That would render Starship – potentially perfectly healthy and operational – almost entirely uncontrollable, while also potentially removing SpaceX’s access to telemetry. In other words, the company may currently have no idea how pressurized all or part of Starship SN4 is and may also have little to no control of some or all of the rocket. For that to be true, Starship SN4 would, however, have to have less than fully redundant control hardware. To perform hops, for example, the ship would need both wired and radio links capable of sending telemetry and receiving commands to remain both on the ground and after liftoff.

It’s possible that Starship SN4 has the necessary hardware installed but that it wasn’t activated for the static fire test (think “Starship will never leave the ground, why would we need to enable wireless controls?”). It’s also possible that the blown pipe and methane leak that appeared to cause the secondary fire damaged crucial propellant management hardware (valves, pumps, etc.) or was just a symptom of an even worse overpressure event that damaged or destroyed multiple such systems.

Given that safety is almost certainly the priority, chances are that some combination of fairly mild hardware failure and telemetry/control loss has left SpaceX with just enough uncertainty that it can’t risk sending technicians to the launch site to inspect the damage and reestablish control. As a result, the only option left is to quite literally sit and wait until it’s once again safe to approach the rocket. Thankfully, at this point, the risk of the mystery problem actually destroying Starship SN4 is very low. If, as it appears, only its methane tank is affected, leaving some unknown quantity of latent liquid methane trapped inside, it’s possible that waiting will actually solve the problem and safe the rocket.

Starship SN4 is pictured a few hours before its ill-fated third static fire test. (NASASpaceflight – bocachicagal)
On a positive note, it appears that the concerning amount of dark smoke created in the first minute or two of the post-test fire was caused by a huge amount of tape/insulation/???? wrapped around part of Starship’s test stand in the hours before its May 19th test attempt.(NASASpaceflight – bocachicagal)

The fact that Starship hasn’t exploded yet strongly implies either that the amount of propellant trapped is minuscule or that the vast majority of SN4’s propellant management systems (including vents) remain functional. Assuming that’s the case, any remaining cryogenic propellant will eventually boil into gas, increasing the pressure inside Starship’s tanks, while those tanks will continue to vent to prevent an explosion or rupture. Eventually, Starship SN4 will be empty once again and SpaceX will be able to approach the rocket to regain control and begin inspections and repairs.

Regardless, after such an unintentionally eventful static fire test, it’s extremely unlikely that SN4 will be ready for its inaugural flight test within the next few days. Stay tuned for updates as SpaceX works to regain control over the fourth full-scale Starship prototype.

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Eric Ralph is Teslarati's senior spaceflight reporter and has been covering the industry in some capacity for almost half a decade, largely spurred in 2016 by a trip to Mexico to watch Elon Musk reveal SpaceX's plans for Mars in person. Aside from spreading interest and excitement about spaceflight far and wide, his primary goal is to cover humanity's ongoing efforts to expand beyond Earth to the Moon, Mars, and elsewhere.

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Tesla Full Self-Driving v14.3 rolls out: here’s what’s new

We are in EAP and will be on the road with v14.3 in the coming hours, so we’ll have a lot of things to discuss over the next few days, especially coming from v14.2.2.5, which I called the most “confusing” FSD release of all time.

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Tesla has officially started rolling out Full Self-Driving v14.3 to Early Access Program (EAP) members, and there are a lot of new improvements.

We are in EAP and will be on the road with v14.3 in the coming hours, so we’ll have a lot of things to discuss over the next few days, especially coming from v14.2.2.5, which I called the most “confusing” FSD release of all time.

Tesla brought out a lot of improvements, according to the v14.3 release notes, which list a vast number of fixes, new features, and new capabilities.

Here’s what Tesla’s release notes for the v14.3 release state:

  • Improved parking location pin prediction, now shown on a map with a P icon.
  •  Increased decisiveness of parking spot selection and maneuvering.
  • Rewrote the Al compiler and runtime from the ground up with MLIR, resulting in 20% faster reaction time and improving model iteration speed.
  • Enhanced response to emergency vehicles, school buses, right-of-way violators, and other rare vehicles.
  • Mitigated unnecessary lane biasing and minor tailgating behaviors.
  • Improved handling of small animals by focusing RL training on harder examples and adding rewards for better proactive safety.
  • Improved traffic light handling at complex intersections with compound lights, curved roads, and yellow light stopping – driven by training on hard RL examples sourced from the Tesla fleet.
  • Upgraded the Reinforcement Learning (RL) stage of training the FSD neural network, resulting in improvements in a wide variety of driving scenarios.
  • Upgraded the neural network vision encoder, improving understanding in rare and low-visibility scenarios, strengthening 3D geometry understanding, and expanding traffic sign understanding.
  • Improved handling for rare and unusual objects extending, hanging, or leaning into the vehicle path by sourcing infrequent events from the fleet.
  • Improved handling of temporary system degradations by maintaining control and automatically recovering without driver intervention, reducing unnecessary disengagements.

Tesla also listed a handful of future improvements as well:

  • Expand reasoning to all behaviors beyond destination handling
  • Add pothole avoidance
  • Improve driver monitoring system sensitivity with better eye gaze tracking, eye wear handling, and higher accuracy in variable lighting situations

CEO Elon Musk has said that v14.3 could be “where the last big piece of the puzzle finally lands.” We have high expectations for this release because, in a lot of ways, v14.2’s final version was extremely disappointing and seemed to be a regression more than anything.

Nevertheless, Full Self-Driving v14.3 is going to be quite an interesting test, considering this is also the first time Musk has stated it will feel like the car will be “sentient.”

Reasoning will be a bigger piece of the puzzle with this release, although there were some elements of it in v14.2.

Tesla AI Head says future FSD feature has already partially shipped

We plan to travel plenty of miles with it over the next few days, so we’ll keep you posted on what our thoughts are.

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Tesla Model Y ownership review after six months: What I love and what I don’t

I pay about $25 more a month than I did for my Bronco Sport for my Tesla. It was a no-brainer to switch. Like any car, it isn’t perfect, but my Tesla has more things right than any other car I’ve owned, and that makes it truly incredible.

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Credit: Joey Klender

It has been just over six months since I took delivery of my Diamond Black Tesla Model Y Premium Long Range (at that time, it was called the Tesla Model Y Long Range All-Wheel-Drive).

In those six months, I have had the opportunity to experience true and pure electric vehicle ownership, what comes with it after driving a gas vehicle for my entire life, and, to be completely frank, there are not many things I would change.

Owning a Tesla was something I never thought I’d do until I owned a house, simply to take advantage of the advantage of home charging. However, I had to take the chance last year with the elimination of the $7,500 electric vehicle tax credit, as well as to avoid the mountainous stack of repair bills that were presenting themselves with my Ford Bronco Sport.

There are a lot of things I love about my Model Y, and there are a handful of things I wish I could change. In this piece, I plan to break down the ownership experience through about six months with my Tesla Model Y, hoping to provide you with enough insight to potentially make a change — or stick with what you have.

Things I Love About My Tesla Model Y

Driving Experience

Tesla really pushes Full Self-Driving and autonomy, but there are times that, as an owner, I feel I need to drive this car manually. Tesla put so much effort into the Model Y’s engineering and driving experience that it feels like a bit of a disservice to have it drive itself around all the time.

The suspension in this vehicle, as well as its ability to handle sharp corners, its quick acceleration, and its ability to hug the road at spirited speeds, is truly something you need to feel for yourself. I personally have never had a car that was truly geared toward driving this way. Other than a short-lived ownership experience with a Honda Civic a few years back (something I won’t ever do again), all of my vehicles have been SUVs or compact crossovers.

Credit: Joey Klender

Having a car that offers both a fun driving experience and cargo space is what the Model Y truly is all about. It’s a fun car to drive, but it also has a lot of functionality.

It is always a treat when it’s a little warmer out, I can roll the windows down, and take my Model Y to a tight back road in Pennsylvania to have some fun. I have never loved driving in the traditional sense. I don’t hate it, but it’s not necessarily “fun” to me, but that’s probably because I never had a car that was engineered to make the driving experience enjoyable.

This has truly changed my perspective on driving, and the Model Y is probably the second-most-fun car I’ve ever had the pleasure of driving. The first? The Tesla Model S.

Home Charging and Supercharging

Now, Home Charging is relatively new to me, and I covered my process for figuring that out in another article, which is linked here.

Waking up in the morning and having some additional range is really a great feeling — and with gas prices going through the stratosphere, the money I’m saving on gas is something quite special.

Supercharging is also a fun experience for me. Do I wish it were a faster experience? Sure. But there’s plenty to do in the car: Netflix, Hulu, Tesla Arcade, or head into whatever convenience store is nearby, use the restroom, and grab a bite to eat.

I have come to enjoy the evenings that I’ll head over to the Supercharger and plug my car in for half an hour before a longer drive the next day (if I didn’t plug in soon enough at home and need some fast-charging).

Tesla also added a new Supercharging “Wrapped” feature at the end of the year, gamifying the entire Supercharging experience. I’m excited to see all the places I’ve charged at the end of 2026.

Sporty, Clean, and Fun Interior

The interior of my Tesla is probably one of the most underrated features of my car, but it’s definitely my favorite. With vehicles I’ve purchased in the past, the big selling point is the inside for me, not the outside. Of course, I want my car to look good to others, but ultimately, I’m paying the payment and I’m spending 100% of the time I’m using the car on the inside of it.

This highlights the need for a comfy, cozy, and capable cabin that has all the features I could want. In Pennsylvania, we have cold winters and hot and humid summers. The Model Y has heated seats and a steering wheel, as well as A/C seats. The HVAC is incredibly capable, customizable, and comfortable for all passengers, allowing them to make adjustments wherever needed.

At night, the black interior coupled with the accent lighting makes for one of the coolest, spaceship-like interiors on the market. Tesla always called it a “Rave Cave,” and it truly feels like it.

Tech: From Full Self-Driving to Other Features

Tech is really the biggest part of owning a Tesla; it is so advanced that it almost feels like it’s not even a car. Full Self-Driving is obviously such a huge advantage, and I’ve talked about it in great detail, both positively and negatively.

I could write 1,000 words on FSD, but I don’t want to focus on it solely, because there are so many other things that need to be highlighted.

One thing Tesla really has over others is the ability to improve its cars continually. Simple features like a charging adjustment, new modes, or activating features that weren’t quite ready previously are all things Tesla has added through Over-the-Air updates.

I don’t know if I could pick just one as a favorite, but in the six months I’ve had my car, the most useful thing I’ve come across outside of FSD is Summon. While it is hit or miss a lot of the time, there are little features, like moving the car forward or back from the Tesla App, that are incredibly useful. Adjusting a park job, making snow shoveling around the car easier, or even moving the car slightly when I’m taking photos or video is incredibly seamless with this functionality.

Cargo and Interior Space

One of my big concerns when going from a Bronco Sport to a Model Y was cargo space, only to find out the Model Y has more space than the Bronco Sport. I always have something in the trunk, whether it is luggage, my golf bag, shoes, or groceries. I’ve never felt like I’ve needed more space in this car, although I’m sure that day will come when I get the boys together for a golf trip and I am driving.

I’ve packed luggage for my Fiancèe and a few of her friends on a trip to Disney with no issues. Four girls going to Disney for five days is a challenge that will frighten even the most capable vehicles. I had no issues.

But what is also great about the Model Y is that it has the room to do other things, like fit an entire mattress for camping. SNUUZU makes an amazing Tesla mattress that I have thrown in the car to watch sunsets. This Summer, I’ll do some camping with it.

It’s one of the many things about this car that I really love.

Things About My Tesla Model Y I Do Not Love

Winter Range

There’s no getting around the fact that owning this car without a faster charging option at home in the winter is truly frustrating. I was charging much more frequently in January and February than in any other month.

I took a 40-mile round-trip drive to grab some hot wings with friends in January. It took about 105 miles of range.

The cold weather was truly a frustrating time to own an EV, and my problems would have been solved with a Level 2 charger at home. Even still, the drives that were a few hours long were going to be fit with 10-15 minute stops to grab some range at a Supercharger.

Navigation

I really think that Tesla could have the best navigation out there. They always talk about licensing FSD, but if they were to license their Navigation software, I think it could overtake Apple Maps, Waze, and others. With a weather radar, live traffic updates, satellite imagery, and more, the Navigation system is truly the best around.

However, the Navigation itself, meaning the routing, is absolutely abysmal. It doesn’t learn from mistakes, it doesn’t learn more ideal routing, and it doesn’t seem to improve at any point. It still tries to leave my neighborhood by turning left out of a right-turn-only exit. It routinely takes some of the most head-scratching routes to local destinations.

Consistently using the FSD disengage feature to report the problems to Tesla’s AI Team doesn’t seem to yield much of a result. It would be great if there were a “Learn” mode so that it could be less on Tesla to refine things, and the car would just learn automatically.

Cup Holders

This is a really trivial and nitpicky point of criticism, but boy, do these cupholders need to be larger. Many of my reusable water bottles do not fit in them, so I had to grab a $25 cup holder “adapter” from Amazon. It obstructs the center console from opening comfortably, but it is what it is. It fits standard cups, soft drink containers from fast food restaurants, and bottles of water, at least for the most part.

It would be nice if Tesla could think about something for the next Model Y refresh here, although I may be the only one to really complain about them.

Final Thoughts

I pay about $25 more a month than I did for my Bronco Sport for my Tesla. It was a no-brainer to switch. Like any car, it isn’t perfect, but my Tesla has more things right than any other car I’ve owned, and that makes it truly incredible.

Sometimes I am still baffled that this is my car. It feels crazy to drive something that is so far ahead of any other car I’ve driven. Three of my friends own Teslas now, all of us bought them at the same time last year, and all four of us don’t know if we’d ever consider going back.

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Elon Musk’s Terafab project locks up massive new partner

Terafab, first revealed by Musk in March, is a massive joint-venture semiconductor complex planned for the North Campus of Giga Texas in Austin.

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Credit: SpaceX

Elon Musk’s Terafab project just locked up a massive new partner, just weeks after the new project was announced by Tesla, SpaceX, and xAI, the three companies that will be direct benefactors from it.

In a landmark announcement on April 7, Intel joined Elon Musk’s Terafab project as a key partner alongside Tesla, SpaceX, and xAI. The collaboration focuses on refactoring silicon fabrication technology to deliver ultra-high-performance chips at unprecedented scale.

Intel CEO Lip-Bu Tan hosted Musk at Intel facilities the prior weekend, underscoring the partnership’s momentum with a public handshake.

Terafab, first revealed by Musk in March, is a massive joint-venture semiconductor complex planned for the North Campus of Giga Texas in Austin. Valued at $20–25 billion, it aims to consolidate the entire chip-making pipeline, design, fabrication, memory production, and advanced packaging in a single location. It should eliminate a majority of Tesla’s dependence on third-party chip fab companies.

The facility will manufacture two primary chip types: energy-efficient edge-inference processors optimized for Tesla’s Full Self-Driving (FSD) systems, Cybercab and Robotaxi, and Optimus humanoid robots, and high-power, radiation-hardened variants for SpaceX satellites and xAI’s orbital data centers.

Elon Musk launches TERAFAB: The $25B Tesla-SpaceXAI chip factory that will rewire the AI industry

The project’s audacious goal is to produce 1 terawatt (TW) of annual compute capacity, roughly 50 times current global AI chip output.

Production is expected to begin modestly and scale rapidly, addressing Musk’s warning that chip supply could soon become the biggest constraint on Tesla, SpaceX, and xAI growth. By vertically integrating manufacturing tailored to their exact needs, Terafab eliminates supply-chain bottlenecks and accelerates iteration for AI training, inference at the edge, and space-based computing.

Intel’s participation is strategically vital. The company will contribute expertise in advanced process technology, high-volume fabrication, and packaging to help Terafab achieve its aggressive targets. For Intel, the deal strengthens its foundry business and positions it as a critical U.S. player in the AI hardware race.

For Musk’s ecosystem, it secures domestic, purpose-built silicon at a time when global capacity meets only a fraction of projected demand for hundreds of millions of robots and orbital AI infrastructure.

This is the latest chapter in Intel-Tesla ties. In November 2025, Musk publicly stated at Tesla’s shareholder meeting that partnering with Intel on AI5 chips was “worth having discussions,” amid concerns about TSMC and Samsung capacity.

Exploratory talks followed, with Intel eyeing custom-AI opportunities. The Terafab integration transforms those conversations into concrete collaboration.

The Intel-Terafab alliance carries broader implications. It bolsters U.S. semiconductor sovereignty, drives innovation in cost- and power-efficient AI silicon, and supports Musk’s vision of exponential progress in autonomy, robotics, and space.

As AI compute demand surges, this partnership could reshape the industry, delivering the silicon backbone for a new era of intelligent machines on Earth and beyond.

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