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SpaceX just finished Starship’s 100th Raptor engine

SpaceX's Hawthorne rocket factory has completed the 100th full-scale Raptor engine. (SpaceX)

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SpaceX says its Hawthorne, California rocket factory and headquarters has completed the assembly of Starship and Super Heavy’s 100th Raptor engine.

SpaceX began developing Raptor behind the scenes as far back as 2012 and 2013, when a small team successfully tested a full-scale Raptor preburner – a small but important subcomponent – at NASA’s Stennis Space Center (SSC) facilities. Three years later, in September 2016, CEO Elon Musk revealed the first integrated static fire of a Raptor prototype – though it would later become clear that that prototype was a subscale engine about the same size as Falcon 9’s Merlin 1D.

After two and a half years of subscale testing that helped SpaceX refine startup and shutdown sequences and the general operation of what quickly became the world’s most thoroughly tested full-flow staged combustion engine, SpaceX graduated to full-scale testing. Designed to produce about twice the thrust (~200 tons/440,000 lbf) of its subscale predecessors, the first full-scale Raptor engine shipped to SpaceX’s McGregor, Texas test facilities and completed its first static fire days later on February 3rd, 2019.

Notably, the very first full-scale Raptor prototype (SN1) not only survived its first test but lived long enough to complete several more, ultimately reaching SpaceX’s minimum thrust target four days after its first static fire. A vibration issue would soon require several months of troubleshooting and iterative build-test-fail cycles but Raptor was ultimately ready to support its first brief Starhopper hop tests in July and August.

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Approximately 15 months after Raptor’s first flight, Starship prototype SN8 successfully lifted off with three engines, one of which performed a near-flawless four-minute burn to apogee. Eventually, six months after SN8’s successful ascent but failed landing, Starship SN15 successfully landed, demonstrating Raptor’s ability to reignite mid-flight. Since SN15’s May 2021 success, SpaceX appears to have completed anywhere from 20 to 35+ new Raptors as part of a dramatic acceleration in production to meet the needs of at least two imminent orbital Starship test flights – both of which will need approximately 35 engines each.

Per its label, RB16 – now better known as the 100th Raptor engine overall – is the 16th Raptor Boost engine built by SpaceX. “Boost” refers to the particular variant – in this case, a Raptor engine specifically designed for an outer ring of 20 engines on each Super Heavy booster. Unlike Raptor Center (RC) engines, the outer ring of Raptor Boost engines are fixed in place against the rocket’s skirt and aren’t designed to vector their thrust (i.e. gimbal). According to Musk, all sea level-optimized Raptor engines will ultimately produce approximately 230 tons (~510,000 lbf) of thrust.

Relative to almost any other large-scale engine development program in the last half-century, Raptor’s 29-month 100-engine milestone is an extraordinary achievement. The closest comparable engine is Blue Origin’s BE-4, which is expected to produce up to ~240 tons (~540,000 lbf) of thrust, uses an efficient (albeit slightly less so) combustion cycle, and relies on the same methane and oxygen propellant. Full-scale BE-4 testing began 16 months before Raptor in October 2017 and Blue Origin has reportedly only built and tested nine prototypes in the almost four years since. According to Musk, as of May 2021, SpaceX is now building more than a dozen Raptors – including prototypes and flight engines – every month.

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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 tops American-Made Index for sixth-consecutive year

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Credit: Tesla

Tesla is atop the American-Made Index from Cars.com for the sixth-straight year, as the Model 3 and Model Y took the top two spots, respectively.

Last year, the Model 3, Model Y, Model S, and Model X took the top four spots, respectively. The company has routinely performed well in the Index. However, Tesla discontinued its flagship Model S and Model X earlier this year, which took the two cars out of the ranking.

Cybertruck is not considered due to its curb weight being above the 8,500-pound threshold, which eliminates it from being required to have more detailed assembly information.

Cars.com uses five main categories to develop its rankings:

  • Location(s) of final assembly
  • Percentage of U.S. and Canadian parts
  • Countries of origin for all available engines
  • Countries of origin for all available transmissions
  • U.S. manufacturing workforce

These five major factors are then put into a 100-point scale. The vehicles with the highest scores sit atop the list. The Model 3 edged out the Model Y.

Tesla uses a strong domestic strategy to build its cars and parts domestically. It relies on intense vertical integration that reduces its dependence on global suppliers, keeping more value and jobs in the United States.

This strategy has helped Tesla gain a strong reputation for domestically produced vehicles and parts. However, it helps it with more than just awards like this one. Keeping a supply chain local has also helped insulate Tesla more than others from tariffs and supply chain disruptions.

This year’s American-Made Index from Cars.com studied nearly 400 vehicles from the 2026 model year. Tesla was the only manufacturer to have an EV inside the Top 10. The Kia EV9 was the next EV to make the list, scoring the 17th position.

The Hyundai IONIQ 5 was 21st, and the final EV to make the list was the Cadillac LYRIQ in 77th.

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Elon Musk

Tesla finally clarifies fatal Texas crash, confirms driver manually overrode acceleration

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Credit: CNBC

Tesla has finally clarified the situation regarding the viral crash in Texas where a Model 3 slammed into a home.

CEO Elon Musk replied to reports on Monday that stated the crash was due to the company’s Full Self-Driving or Autopilot suite, which seemed unlikely to those who are familiar with it. Video showed the car slamming into a house at an excessive rate of speed, making it highly unlikely the crash was due to the suite’s operation, as it does not travel at those speeds in residential areas.

Musk said:

“This makes no sense. FSD drives slowly through neighborhood streets, and this was a high-speed crash!”

Tesla’s Head of AI, Ashok Elluswamy, added context, revealing that the company’s data shows the driver “manually overrode self-driving by pressing the accelerator all the way to 100%.”

He revealed the speed reached by the car was 73 MPH, and the accelerator was still pressed “even after the crash.”

Authorities are reportedly investigating “whether Tesla’s Autopilot system played a role after a Model 3 left the roadway…slammed through a brick house at high speed and fatally struck Matha Avila as she sat inside,” the New York Post reported.

The National Highway Traffic Safety Administration (NHTSA) is now investigating the crash. Tesla will work with the agency to provide them with whatever information they need in order to clarify the cause of the crash.

Similarly, Tesla had claims of a fatal accident in Harris County, Texas, a few years ago. Early reports indicated that Full Self-Driving was the cause of the crash. After the National Transportation Safety Board (NTSB) worked with Tesla, the agency proved there was “no use of the Autopilot system at any time during this ownership period of the vehicle, including the time frame up to the last transmitted timestamp on April 17, 2021.”

Tesla alleged “driverless” crash in Texas: What is known so far

“Application of the accelerator pedal was found to be as high as 98.8 percent,” the NTSB said in their findings. The highest recorded speed in the five seconds leading up to the impact was 67 miles per hour. The area where the crash occurred is residential, and Texas State laws have default speed limits of 30 MPH in residential streets.

This appears to be a similar situation. However, an investigation will prove what happened for sure.

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Investor's Corner

SpaceX makes $20 billion move to optimize its balance sheet

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Credit: SpaceX

SpaceX announced today that it commenced its first-ever public bond offering, marking a significant step in the newly public company’s capital markets strategy.

The company announced an offering of senior unsecured notes expected to raise at least $20 billion.

The move comes just a short time after SpaceX completed one of the largest initial public offerings in history. In mid-June, the company priced shares at $135 and raised more than $85 billion, propelling founder Elon Musk’s net worth past the trillion-dollar mark and giving the firm substantial liquidity.

According to the company’s SEC filing, the net proceeds from the notes will be used primarily to repay in full the outstanding borrowings under its existing bridge loan facility, cover related fees and expenses, and fund general corporate purposes. The offering is being conducted under Rule 144A, as well as Regulation S, targeting qualified institutional buyers and non-U.S. investors. Notes will be unsecured obligations ranking equally with other unsubordinated debt.

The $20 billion bridge loan was used to refinance approximately $17.5 billion in higher-cost “junk” debt tied to X and xAI. SpaceX had merged with xAI in February 2026 in an all-stock deal. The bridge facility, which matures in September 2027, had represented the bulk of SpaceX’s long-term debt.

SpaceX officially acquires xAI, merging rockets with AI expertise

In connection with the bond launch, SpaceX disclosed it held approximately $100.8 billion in cash and cash equivalents as of June 19. Investor calls began on the announcement date, with pricing and launch expected shortly thereafter. Rating agencies have assigned investment-grade ratings to the proposed bonds, reflecting confidence in SpaceX’s dominant position in commercial launches and the growth trajectory of its Starlink internet offering.

The debt raise also allows SpaceX to optimize its balance sheet by replacing short-term, higher-cost bridge financing with longer-date, lower-cost fixed-income securities. This provides greater financial flexibility to support capital-intensive initiatives, including the development of Starship, the expansion of the Starlink constellation, and the integration of AI capabilities following the xAI combination.

SpaceX shares (NASDAQ: SPCX) fell sharply on the news, dropping over 16 percent overall on the market on Monday. The stock had surged initially after debuting but pulled back amid profit-taking and broader market dynamics.

Overall, the bond offering underscores SpaceX’s transition to a mature public company with access to diverse funding sources. It positions the firm to pursue its long-term vision of multiplanetary expansion and AI infrastructure, while maintaining a disciplined approach to its capital structure in a high-growth but capital-heavy industry.

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