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Tesla shows off its super-effective HEPA filter and Bioweapon Defense Mode in crazy new test

Credit: Tesla | YouTube

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Tesla released a new video to its YouTube channel today to show off its super-effective HEPA filter, which when combined with Bioweapon Defense Mode, keeps nearly all traces of pollution and particulate matter out of the cabin.

Tesla has used the HEPA filter and Biodefense Mode in the Model Y since 2020. It has been installed in other vehicles, namely, the Model X and Model S, for many years. In the new test video, the Model Y goes up against another vehicle that does not have a HEPA-grade filter or Bioweapon Defense Mode. The purpose of the test was to show the effectiveness of the HEPA filter and Bioweapon mode, especially as Tesla claims it takes “up to 99.97% or greater” of particulate matter out of the air, providing safe and pollution-free air for the cabin’s occupants.

Nearly six years ago, Tesla performed basically the same test with a Model X. The all-electric SUV was placed inside a large bubble that was contaminated with extreme levels of pollution. The Model X safely and effectively removed so much of the particulate matter and pollution from the air, that levels were so low they were undetectable by the instruments used.

Tesla Reveals Results from Bioweapons Defense Mode Testing

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In the new experiment, a series of smoke bombs were set off inside the bubble to give a more visual representation of the effectiveness of the HEPA filter and Bioweapon Defense Mode. After several moments in the car, the Model Y’s cabin remained smoke-free. The cabin was able to be occupied by a Tesla employee. The other car, which had a camera installed inside just as the Model Y did, was filling with smoke quickly.

The post-test analysis of the HEPA filter provided valuable feedback. Not only was the filterable to capture nearly all of the particulate matter, but the red smoke was able to be spotted on the HEPA-grade filter.

The HEPA Filter on the Tesla Model Y captured a significant amount of the red smoke in the new Bioweapon Defense Mode test. (Credit: Tesla | YouTube)

The HEPA filter is inspired by air filtration systems used in hospitals, clean rooms, and the aerospace industry and can prevent smoke, bacteria, and pollen from entering the cabin. In today’s world, this is an underrated feature, especially as any air from the outside world becomes what passengers breathe in a car. Without a HEPA filter and Bioweapon Defense Mode, there is pollution entering the cabin, which becomes the air that you and your passengers will breathe.

Check out Tesla’s new HEPA Filter video below!

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I’d love to hear from you! If you have any comments, concerns, or questions, please email me at joey@teslarati.com. You can also reach me on Twitter @KlenderJoey, or if you have news tips, you can email us at tips@teslarati.com.

Joey has been a journalist covering electric mobility at TESLARATI since August 2019. In his spare time, Joey is playing golf, watching MMA, or cheering on any of his favorite sports teams, including the Baltimore Ravens and Orioles, Miami Heat, Washington Capitals, and Penn State Nittany Lions. You can get in touch with joey at joey@teslarati.com. He is also on X @KlenderJoey. If you're looking for great Tesla accessories, check out shop.teslarati.com

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One of Tesla’s biggest threats just got banned in the U.S.

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In a major development that will inevitably strengthen Tesla’s dominant position in the American EV market, Polestar has been effectively banned from selling new vehicles in the United States, starting with the 2027 model year.

The U.S. Department of Commerce denied Polestar authorization under the Connected Vehicle Rule, which prohibits vehicles containing certain connected technologies (Cellular, Wi-Fi, Bluetooth, etc.) linked to China or Russia due to national security risks, including potential data collection on American drivers.

Polestar, which is majority-owned by China’s Geely Holding, could not obtain the required exemption despite producing some models domestically.

Polestar confirmed it will sell off any remaining inventory of the Polestar 3 and Polestar 4 models, while continuing service and warranty support for existing customers. No new models or major refreshes will reach U.S. buyers, and the company is pivoting its growth strategy to Europe, where it already generates the vast majority of its sales.

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The outcome removes a direct premium EV competitor that had positioned itself as a stylish, performance-oriented alternative to Tesla’s lineup. The Polestar 2 challenged the Model 3, while the Polestar 3 and 4 targeted segments overlapping with the Model Y and upcoming Tesla offerings. Polestar’s U.S. sales had already been sluggish amid intense competition and slower demand, representing just 6 percent of its global volume in the first quarter of 2026.

While Polestar was not on Tesla’s level in the U.S., it still places a dent in the evergrowing field of Tesla competitors in the country, where it has long dominated EV sales.

Tesla faces none of these hurdles. As a U.S.-founded and U.S.-headquartered company with major manufacturing in Fremont, Austin, and Nevada, Tesla’s vehicles are built with compliant domestic and allied supply chains. Its Full Self-Driving technology, over-the-air software updates, and vertically integrated ecosystem were developed entirely in-house without foreign ownership entanglements that trigger national security reviews, at least in the U.S.

Of course, it did face a similar threat in China a few years back:

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Elon Musk responds to reports of Tesla ban among China’s military over security concerns

The Connected Vehicle Rule, first advanced under the prior administration and upheld under the current one, is part of a broader U.S. effort to protect the domestic auto industry and critical technology from Chinese influence. High tariffs on Chinese-made EVs and related restrictions have already reshaped the market. Tesla benefits directly: it avoids these barriers while continuing to lead in U.S. EV sales volume, Supercharger network expansion, and energy storage integration.

By clearing Polestar from the new-vehicle playing field, the policy reduces competitive pressure in the premium and performance EV segments where Tesla has invested billions. American consumers seeking cutting-edge electric vehicles now have one fewer option tied to foreign adversaries — and one clearer path to the market leader that has driven the EV transition from the start.

For Tesla, this is more than regulatory relief. It is a strategic tailwind that reinforces its position as America’s premier EV innovator at a time when domestic manufacturing and technological independence matter most.

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Tesla Cybercab stands to gain from new Trump autonomy rules

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Credit: Teslarati

Tesla Cybercab stands to gain from new rules that the Trump Administration is aiming to enforce on autonomous vehicles. On Thursday, NHTSA, under the Trump Administration’s U.S. Department of Transportation, commenced rulemaking on the Federal Motor Vehicle Safety Standards (FMVSS).

This effort aims to eliminate the mandate for manual brake pedals in vehicles that are designed to be driven exclusively by automated driving systems. This would impact the Tesla Cybercab, which the company has stated would operate without a steering wheel or pedals.

Tesla Cybercab launch is imminent after latest sighting at Giga Texas

The Trump Administration is looking to revise FMVSS No. 135, which requires standard braking systems on light-duty vehicles.

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Currently, the regulation requires light-duty cars to use traditional manual braking systems that allow operators to slow the vehicle. With the advent of self-driving in the U.S., these regulations need updating, and these are the changes that could come to FMVSS No. 135:

  • Removes requirements for hand- or foot-operated brake controls for vehicles designed never to be operated by a human. Existing rules still apply to AVs that retain manual controls.
  • All subject vehicles must still meet the same stopping distance performance criteria via alternative testing procedures.
  • While this update ensures AVs can physically stop when commanded, NHTSA is separately developing safety performance requirements for AVs in real-world driving scenarios.
  • NHTSA will continue to use its broad defect enforcement authority to investigate unsafe ADS behavior and oversee recalls.

As autonomy becomes a greater part of passenger travel, these types of rule adjustments will be more than reasonable. It will give manufacturers the ability to self-certify their vehicles and avoid any red tape that could ultimately delay the deployment of these vehicles.

Administrators are also incredibly excited about the opportunity to play a role in the advancement of self-driving vehicles.

“We are at the cusp of the greatest technological revolution in vehicle technology since the innovation of the Model T,” NHTSA Administrator Jonathan Morrison said. “If we want America to lead the way, we have to reimagine our regulatory framework. That’s why under Secretary Sean Duffy’s AV Framework, NHTSA is tearing down pointless barriers to innovative designs while strengthening the fundamental safety requirements that matter and holding AV developers accountable for safe performance.”

The Cybercab entered mass production at Gigafactory Texas in April. Tesla ultimately plans to push the vehicle into its Robotaxi fleet, potentially when frameworks like these are established.

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Tesla plans production boost at Giga Berlin following rebound in Europe

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Credit: Andre Thierig | X

Tesla plans to boost production at its Gigafactory Berlin plant in Germany following a sharp rebound in sales and demand in Europe after a softer 2025.

The plans put Tesla in a better position to compete with strengthening companies in Europe and potentially other markets; demand indicators show Tesla is much better off than in 2025.

Last year was a tough year for Tesla in terms of overall demand in Europe. The company produced over 200,000 vehicles at the German plant last year, a soft figure compared to the 375,000 vehicles Tesla lists as its current capacity at the factory.

Tesla’s overall European sales dropped significantly last year due to a variety of factors. However, sales are rebounding, and demand is strong once again, and only getting stronger. Tesla is now planning to bump production of Model Y vehicles at Giga Berlin upward by about 20 percent. It will also bring 1,000 new jobs to the plant.

Tesla confirmed the details of its planned production expansion in Germany this morning. It is a strategy to keep up with strengthening demand.

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In Q1, Tesla saw a record 61,000 vehicles produced at Giga Berlin. European registrations rebounded sharply, with Model Y seeing 117 percent increases in March 2026 compared to last year. Germany alone saw stark increases, with a quadrupling in registrations to 9,252 units.

This trend continued in other key European markets, including France, Denmark and Sweden. Tesla registrations were up over 46 percent in some of these markets, and Model Y continued its trend as a top BEV in the market.

Demand has been recovering strongly in 2026, giving Tesla a reason to expand production efforts at the factory. These increases signal management’s confidence in sustained or growing European pull for Berlin-built vehicles.

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