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Petition for Tesla vehicle fire investigation rejected by the NHTSA
The National Highway Traffic Safety Administration (NHTSA) has effectively rejected a petition that called for an investigation into Tesla vehicle fires and how they may be related to its over-the-air software updates. According to the NHTSA, it is unlikely that a probe would find a safety defect in Tesla’s vehicles.
The petition, which was filed back in 2019, alleged that Tesla’s over-the-air software updates ended up cutting battery range. The petition also claimed that the strategy was a response to battery fires across the globe. The NHTSA noted in documents posted in the Federal Register that there were fires in China after Teslas were charged at Superchargers.
No such incidents were identified in the United States, however. The agency also stated that three of the non-crash fires outside of China cited in the 2019 petition actually did not start in the battery, nor were they related to fast charging. Two of the incidents listed in the petition were not in the United States, either.
Ultimately, the NHTSA concluded that it would not be opening a formal investigation into the fires and Tesla’s over-the-air software updates. Considering the available data, it could be noted that noncrash battery fires in Teslas are actually rare events.
“The available data indicate that noncrash battery fires in Tesla vehicles are rare events. It is unlikely that an order concerning the notification and remedy of a safety-related defect would be issued due to any investigation opened as a result of granting this petition,” the agency noted.
Elaborating further, the NHTSA stated that it looked into data from the 2019 petition and from Tesla itself. It also examined field data from vehicle fires that were not caused by a crash. The 2019 petition covered about 255,000 Tesla Model S and Model X that from the 2012 to 2019 model years.
“NHTSA is authorized to issue an order requiring notification and remedy of a defect if the Agency’s investigation shows a defect in the design, construction, or performance of a motor vehicle that presents an unreasonable risk to safety. Given the absence of any incidents in the United States related to fast charging, and the absence of any such incidents globally since May 2019, it is unlikely that an order concerning the notification and remedy of a safety-related defect would be issued due to any investigation opened as a result of granting this petition. Therefore, upon full consideration of the information presented in the petition, and the potential risks to safety, the petition is denied,” the NHTSA wrote on its ODI resume.
Tesla Vehicle Fire Nhtsa by Simon Alvarez on Scribd
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Tesla China registrations bounce back to 11.1k vehicles in May’s 2nd full week
Tesla China’s domestic vehicle registrations have been volatile in recent weeks.

Tesla reported 11,130 insurance registrations in China in the week of May 12-18, 2025. These represent a 262.5% increase from 3,070 registrations that the company saw in the week ending May 11.
Tesla China’s domestic vehicle registrations have been volatile in recent weeks, suggesting that Giga Shanghai may still be exporting Model 3 and Model Y vehicles to foreign territories this month.
Tesla China’s Registrations
In the week ending May 4, Tesla China saw 7,300 new vehicle registrations. This was not that surprising considering that Tesla may still be allocating Gigafactory Shanghai’s output to vehicle exports. In the week ending May 11, however, industry watchers were quite surprised to see just 3,070 registrations from Tesla China.
The 262.54% bounce in vehicle registrations in the week ending May 18 is thus a pleasant update from the world’s biggest and most competitive electric vehicle market. Even with these results, however, industry watchers still note that Tesla China’s registrations this 2025 are still down 6.5% year-over-year.
Tesla China does not report its weekly sales figures, though the company’s overall performance in the domestic automotive sector can be inferred through new vehicle registration data. Fortunately, these registrations are closely tracked by industry watchers, as well as local automakers such as Li Auto.
Domestic Sales and Exports
Following the start of domestic deliveries of the new Model Y in China, expectations were high that the company would see a steady rise in registrations this second quarter. Giga Shanghai does not only supply vehicles to the domestic Chinese market, after all, as the facility also serves as the company’s primary vehicle export hub, providing Model 3 sedans and Model Y crossovers to several territories.
Tesla China sold 28,731 vehicles domestically and exported 29,728 vehicles in April. In comparison, the company saw 74,127 domestic registrations and 4,701 exports in March 2025, as per data compiled by CNEV Post. Considering Tesla China’s registrations this May, it would not be surprising if the company’s exports this month would exceed March’s 4,701 units.
News
xAI receives more Tesla Megapacks for Colossus 2

xAI is bolstering its Colossus 2 data center in Memphis with 168 Tesla Megapacks, enhancing the energy infrastructure for its ambitious AI supercomputer expansion. The deployment underscores xAI’s push to lead AI innovation while addressing environmental concerns.
The first Colossus site is connected to a 150 megawatts (MW) substation powered by MLGW and TVA. It is supported by approximately 156 Megapacks, providing 150 MW of stored energy backup to xAI’s supercomputer. The 168 Tesla Megapacks recently delivered to xAI’s Memphis site will provide battery storage backup to Colossus 2.
In December 2024, xAI doubled the capacity of Colossus to 200,000 Nvidia H100 GPUs, which consumes 250 MW of power–enough to energize 250,000 homes. In March 2025, the AI company bought a 1-million-square-foot site in Whitehaven, Memphis, for $80 million. xAI’s Whitehaven site could host up to 350,000 GPUs with the potential to deploy the largest number of Tesla Megapacks for backup power.
xAI plans to scale Colossus up to 1 million GPUs to create the world’s largest AI supercomputer. A 1-million-GPU setup would require over 1 gigawatt, about one-third of Memphis’s peak summer demand.
Initially reliant on natural gas turbines, Colossus faced criticism for nitrogen oxide emissions. The 150 MW substation, completed in early 2025, reduced turbine use by half, with Megapacks providing cleaner backup power. By fall 2025, xAI expects the second substation to come online. Once the second substation is online, the remaining turbines will only be used for backup, reducing the project’s carbon footprint.
Tesla Energy’s Q1 2025 performance, with a 156% year-over-year increase and 10.4 GWh of storage deployed, supports xAI’s needs. Tesla’s Megapack factory in Waller County, Texas, set to create 1,500 jobs, signals further commitment to scaling energy solutions for projects like Colossus.
xAI’s rapid expansion, backed by Tesla Megapacks, positions it to rival AI leaders like OpenAI and Google. The Colossus 2 deployment reflects a strategic blend of cutting-edge AI and sustainable energy. As Memphis’ infrastructure adapts to unprecedented power demands, xAI and Tesla are reshaping the AI landscape with a focus on efficiency and environmental responsibility.
News
Grok 3 by xAI Rolls Out on Azure AI Foundry with Free Trial
Grok 3 is now on Azure AI Foundry with a free preview until early June. From code to vision, Grok joins a growing roster of powerhouse models.

xAI’s Grok 3 model is now available on Microsoft’s Azure AI Foundry Models, launching with a free preview to drive AI innovation. The collaboration marks a significant step in making advanced AI accessible to developers worldwide.
Grok 3 became available on Microsoft’s Azure AI Foundry Models on May 19, 2025. Developers can explore xAI’s Grok 3 at no cost through early June. After the free trial period, Grok 3 prices will be as follows:
“Microsoft and xAI are thrilled to unveil the availability of Grok 3 into the Azure AI Foundry Models, marking a significant milestone in AI accessibility and innovation,” Microsoft stated in its announcement.
The partnership integrates xAI’s cutting-edge model with Azure’s secure, scalable infrastructure, enabling enterprise scenarios in reasoning, coding, and visual processing. Grok 3 is accessible via Azure AI Foundry’s catalog, alongside models from OpenAI, Meta, Cohere, NVIDIA, and Hugging Face, reflecting Microsoft’s commitment to a diverse AI ecosystem.
“The addition of xAI’s Grok 3 underscores Microsoft’s commitment to support an open, diverse AI ecosystem, rather than relying on a single model provider,” the company noted.
Like other AI models in Azure, developers can easily discover and deploy Grok 3’s model card. Grok 3 is also available for testing on GitHub models.
Microsoft provides two flexible deployment options for integrating xAI’s Grok 3 into applications: Standard Pay-Go or Provisioned Throughput Units (PTUs). The Standard Pay-Go option allows pay-per-token API calls for quick scaling. Meanwhile, the PTUs are better for reserved capacity with predictable latency.
“For production scenarios where you expect steady high volume or need strict latency, provisioning Grok 3 with PTUs can be cost-effective and reliable,” Microsoft advised.
The launch of Grok 3 on Azure AI Foundry empowers developers to build intelligent assistants, process large documents, or explore new AI applications. As xAI and Microsoft combine innovation with robust tools, Grok 3’s arrival signals a new era of AI development, inviting creators to leverage its capabilities and shape the future of technology.
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