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SpaceX blows up Starship tank to test new metal alloy
SpaceX has destroyed the third Starship ‘test tank’ prototype since it began building and testing the stout steel structures earlier this year.
Much like the third test tank SpaceX built was fashioned out of in-work hardware originally destined to become the full-scale Starship SN2 prototype, the latest tank was built with parts that may have initially been meant for Starship SN7. While SN7’s purpose – stress-testing new designs and manufacturing techniques – was largely identical to its predecessors, the test tank was by far the most radical departure from past hardware yet. The reason: SN7 was built entirely out of a different stainless steel alloy.
Deemed 304L, the type of steel is still readily available off the shelf and only 10-20% more expensive than the 301 alloy SpaceX has used to build all Starship prototypes up to SN7. The biggest change it brings to the table is improved ductility (malleability), particularly at the cryogenic temperatures Starship’s tanks will often be held at. By reducing brittleness, Starships built out of 304L steel should be able to fail far more gracefully by developing stable leaks instead of violently decompressing. In fact, the very same test tank destroyed on June 23rd demonstrated that capability perfectly when it sprung a leak during its first pressure test on June 15th.
During its first cryogenic pressure test with liquid nitrogen, SpaceX CEO Elon Musk revealed that the SN7 test tank managed to reach 7.6 bar (~110 psi) before it began to leak – technically satisfactory for orbital Starship launches with an industry-standard 25% safety factor. Thanks to the general flexibility of steel, including the new 304L alloy SN7 was built with, SpaceX was able to simply repair the leak it identified, readying the test tank for a second cryogenic pressure test barely a week later.

The tank’s second test was all but identical to the first up to the end, where its lower dome appeared to more or less unzip from the steel ring it was welded to. It remains to be seen if SN7 was able to beat its previous record during the second test but the failure mode was quite a bit different from any previous test tank, meaning that SpaceX has gathered useful new data regardless. If the 304L steel tank matched or beat a 301 tank’s current record of ~8.5 bar (~125 psi), SpaceX will very likely build all future Starship tanks out of the material.
According to Musk, another 304L test tank is already in the works and should be able to take SN7’s place very shortly. At the same time, SpaceX appears to finally be ready to roll the next full-scale Starship prototype (SN5) to the launch pad as early as June 24th to kick off cryogenic proof testing, Raptor static fires, and (hopefully) flight tests.
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Elon Musk pivots SpaceX plans to Moon base before Mars
The shift, Musk explained, is driven by launch cadence and the urgency of securing humanity’s long-term survival beyond Earth, among others.
Elon Musk has clarified that SpaceX is prioritizing the Moon over Mars as the fastest path to establishing a self-growing off-world civilization.
The shift, Musk explained, is driven by launch cadence and the urgency of securing humanity’s long-term survival beyond Earth, among others.
Why the Moon is now SpaceX’s priority
In a series of posts on X, Elon Musk stated that SpaceX is focusing on building a self-growing city on the Moon because it can be achieved significantly faster than a comparable settlement on Mars. As per Musk, a Moon city could possibly be completed in under 10 years, while a similar settlement on Mars would likely require more than 20.
“For those unaware, SpaceX has already shifted focus to building a self-growing city on the Moon, as we can potentially achieve that in less than 10 years, whereas Mars would take 20+ years. The mission of SpaceX remains the same: extend consciousness and life as we know it to the stars,” Musk wrote in a post on X.
Musk highlighted that launch windows to Mars only open roughly every 26 months, with a six-month transit time, whereas missions to the Moon can launch approximately every 10 days and arrive in about two days. That difference, Musk stated, allows SpaceX to iterate far more rapidly on infrastructure, logistics, and survival systems.
“The critical path to a self-growing Moon city is faster,” Musk noted in a follow-up post.
Mars still matters, but runs in parallel
Despite the pivot to the Moon, Musk stressed that SpaceX has not abandoned Mars. Instead, Mars development is expected to begin in about five to seven years and proceed alongside the company’s lunar efforts.
Musk explained that SpaceX would continue launching directly from Earth to Mars when possible, rather than routing missions through the Moon, citing limited fuel availability on the lunar surface. The Moon’s role, he stated, is not as a staging point for Mars, but as the fastest achievable location for a self-sustaining off-world civilization.
“The Moon would establish a foothold beyond Earth quickly, to protect life against risk of a natural or manmade disaster on Earth,” Musk wrote.
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Elon Musk confirms Tesla Semi will enter high-volume production this year
Musk shared his update in a post on social media platform X.
Elon Musk has confirmed that Tesla will begin high-volume production of the Class 8 all-electric Semi this year.
He shared his update in a post on social media platform X.
Musk confirms Tesla Semi production ramp
Tesla CEO Elon Musk reaffirmed on X that the Semi is finally moving into volume production, posting on Sunday that “Tesla Semi starts high volume production this year.”
The update comes as Tesla refreshed its Semi lineup on its official website, an apparent hint that the program is transitioning from limited pilots into wider commercial deployment. As per Tesla’s official website, two variants of the Semi will be offered to consumers: Standard and Long Range.
The Standard trim offers up to 325 miles of range with an energy consumption rating of 1.7 kWh per mile and a gross combination weight rating of 82,000 pounds. The Long Range version pushes driving range to 500 miles, with Tesla noting a higher curb weight of about 23,000 pounds, likely due to a larger battery pack.
Both trims support fast charging, with Tesla stating that the Semi can recover up to 60% of its range in 30 minutes using compatible charging infrastructure.
Broader Tesla Semi rollout
Tesla has already delivered production Semi units to select partners, including snack and beverage giant PepsiCo as well as logistics behemoth DHL, which confirmed that its truck operates daily in California, traveling roughly 100 miles per day and requiring charging just about once a week.
The company has also partnered with Uber Freight, as noted in a Benzinga report, with Tesla executives previously describing the agreement as a way for fleet operators to experience the Semi’s lower operating and maintenance costs firsthand.
With Musk now publicly committing to high-volume production, the Semi appears poised to move beyond pilot programs and into scaled commercial use, an important step in Tesla’s wider push to electrify heavy-duty and long-range trucking.
News
Tesla tops France reliability rankings, beating Toyota for the first time
The milestone was celebrated by CEO Elon Musk on social media platform X.
Tesla has overtaken Toyota to become France’s most reliable car brand in 2025, as per a new nationwide reliability ranking published by Auto Plus magazine.
The milestone was celebrated by CEO Elon Musk on social media platform X.
Tesla tops reliability ranking in France
Tesla ranked first overall in Auto Plus’ 2025 reliability study, surpassing long-time benchmark Toyota across all powertrain types, including gasoline, hybrid, and electric vehicles.
The ranking, published on February 6, 2026, evaluated early problems reported in 2025 on vehicles registered in France since January 1, 2018, with fewer than 150,000 kilometers on the odometer, as noted by a Numerama report. This marked Tesla’s first appearance in the magazine’s reliability rankings, which was enabled by the company’s growing vehicle population in the French market.
According to the publication, Tesla vehicles showed no recurring major defects beyond isolated suspension arm issues, which are covered under the company’s four-year or 80,000-kilometer warranty. Other reported issues were described as minor, including occasional screen glitches and door handle concerns.
Why this ranking differs from earlier criticism
Tesla’s top placement contrasts sharply with past assessments from the German Automobile Club (ADAC), which previously ranked the Model 3 and Model Y low in its technical inspection reports. Auto Plus noted that those inspections were focused heavily on factors such as brake disc wear, which are not necessarily the best benchmarks for overall vehicle reliability.
By focusing instead on real-world reliability data and early ownership issues, Auto Plus’ methodology offered a broader picture of how vehicles perform over time rather than how individual components age under inspection standards. The publication emphasized that electric vehicles, with far fewer moving parts than combustion-engine cars, are not inherently less reliable.
While the ranking supports the case that electric vehicles can match or exceed the reliability of traditional brands, the magazine acknowledged limitations in its analysis. Still, Tesla’s debut at the top of the list underscores how perceptions of EV durability are shifting as more long-term data becomes available in major automotive markets like France.