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Tesla’s radar-less Autopilot performance improves in heavy rain

Credit: Kevin Smith | YouTube

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Tesla Vision, the electric automaker’s radar-less and camera-based Autopilot approach, is improving significantly with each software update the company releases. New videos from an owner who has regularly tested the performance of Tesla Autopilot in heavy rain conditions show the vehicle is operating more confidently and with increased precision thanks to improvements released by Tesla.

Kevin Smith, known as @Spleck online, has been regularly using Autopilot in his Tesla Model Y in rainy conditions to test the vehicle’s performance in tough weather with the camera-based approach the company shifted to a few months ago. In May, Tesla announced the adoption of Tesla Vision, stating that it would permanently remove radar from the Model 3 and Model Y, using only cameras to operate Autopilot and FSD. It was a long-awaited move for Tesla and CEO Elon Musk, who saw the use of radar as a crutch for the camera system to operate more accurately. Eventually, Tesla will move the Model S and Model X to the camera-only system as well. For now, it only applies to Model 3 and Model Y vehicles.

Tesla Model 3, Model Y builds in May 2021 will no longer equip radar

The vehicle regularly reduced speed due to heavy rainfall and decreased visibility, a normal reaction from the camera-based approach and even some human drivers in tough conditions. However, the vehicle was reducing speed to an uncomfortable and frustrating amount. Smith explains that previous software versions were too timid and lacked confidence in heavy rain conditions. Software version 2021.4.18.1, which was released in June, was the first instance where Smith realized his vehicle was slowing down at an increased rate due to the excessive rainfall, alerting the driver with a message that read “Speed Limited for Visibility.” Eventually, Smith was kicked out of Autopilot by the vehicle due to visibility issues.

There were still persisting issues with July’s 2021.4.18.10 release, although the Model Y could stay in Autopilot with the rain. However, there was a fairly drastic decrease in speed even though Autopilot stayed active during the drive. The speed reduction was reported even in “moderate rain,” Smith said.

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August’s 2021.4.21.3 update was the most impressive to date, Smith said. Autopilot is reacting much more confidently in even heavy rainfall, drastically improving from the heavy speed reductions that were encountered in previous versions.

Tesla Autopilot and Full Self-Driving improve with every software update thanks to the company’s neural network, which compiles data after every mile driven. Tesla has billions of miles of data that continue to improve the vehicle’s performance in tough weather conditions and challenging driving scenarios. The improvements with driving in the rain are evident. Tesla’s camera-based approach for the Model 3 and Model Y is evidently becoming more confident with the additional data and experience the cars are compiling.

Tesla Vision is also expanding to other features, like Autopark, as radar will eventually be completely phased out from the company’s vehicles.

Check out Kevin Smith’s video below.

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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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Tesla is coming to Estonia and Latvia in latest European expansion: report

Tesla seems to be accelerating its regional expansion following its recent launch in Lithuania.

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Credit: Grok Imagine

Recent reports have indicated that Tesla has taken a step toward entering the Baltic states by registering new subsidiaries in Latvia and Estonia.

Filings suggest that Tesla is accelerating its regional expansion following its recent launch in Lithuania, with service centers likely coming before full sales operations.

Official entities in Latvia and Estonia

Tesla has established two new legal entities, Tesla Latvia SIA and Tesla Estonia OÜ, both owned by Tesla International B.V., as noted in an EV Wire report. Corporate records show the Estonian entity was formed on December 16, 2025, while the Latvian subsidiary was registered earlier, on November 7.

Both entities list senior Tesla executives on their boards, including regional and finance leadership responsible for new market expansion across Europe. Importantly, the entities are registered under “repair and maintenance of motor vehicles,” rather than strictly vehicle sales. This suggests that Tesla service centers will likely be launched in both countries.

The move mirrors Tesla’s recent Baltic rollout strategy. When Tesla entered Lithuania, it first established a local entity, followed by a pop-up store within weeks and a permanent service center a few months later. It would then not be surprising if Tesla follows a similar strategy in Estonia and Latvia, and service and retail operations arrive in the first half of 2026.

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Tesla’s European push

Tesla saw a drop in sales in Europe in 2025, though the company is currently attempting to push more sales in the region by introducing its most affordable vehicles yet, the Model 3 Standard and the Model Y Standard. Both vehicles effectively lower the price of entry into the Tesla ecosystem, which may make them attractive to consumers.

Tesla is also hard at work in its efforts to get FSD approved for the region. In the fourth quarter of 2025, Tesla rolled out an FSD ride-along program in several European countries, allowing consumers to experience the capabilities of FSD firsthand. In early December, reports emerged indicating that the FSD ride-along program would be extended in several European territories until the end of March 2026. 

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Elon Musk

Elon Musk’s X will start using a Tesla-like software update strategy

The initiative seems designed to accelerate updates to the social media platform, while maintaining maximum transparency.

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Ministério Das Comunicações, CC BY 2.0 , via Wikimedia Commons

Elon Musk’s social media platform X will adopt a Tesla-esque approach to software updates for its algorithm.

The initiative seems designed to accelerate updates to the social media platform, while maintaining maximum transparency.

X’s updates to its updates

As per Musk in a post on X, the social media company will be making a new algorithm to determine what organic and advertising posts are recommended to users. These updates would then be repeated every four weeks. 

“We will make the new 𝕏 algorithm, including all code used to determine what organic and advertising posts are recommended to users, open source in 7 days. This will be repeated every 4 weeks, with comprehensive developer notes, to help you understand what changed,” Musk wrote in his post.

The initiative somewhat mirrors Tesla’s over-the-air update model, where vehicle software is regularly refined and pushed to users with detailed release notes. This should allow users to better understand the details of X’s every update and foster a healthy feedback loop for the social media platform.

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xAI and X

X, formerly Twitter, has been acquired by Elon Musk’s artificial intelligence startup, xAI last year. Since then, xAI has seen a rapid rise in valuation. Following the company’s the company’s upsized $20 billion Series E funding round, estimates now suggest that xAI is worth tens about $230 to $235 billion. That’s several times larger than Tesla when Elon Musk received his controversial 2018 CEO Performance Award. 

As per xAI, the Series E funding round attracted a diverse group of investors, including Valor Equity Partners, Stepstone Group, Fidelity Management & Research Company, Qatar Investment Authority, MGX, and Baron Capital Group, among others. Strategic partners NVIDIA and Cisco Investments also continued support for building the world’s largest GPU clusters.

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Tesla FSD Supervised wins MotorTrend’s Best Driver Assistance Award

The decision marks a notable reversal for the publication from prior years, with judges citing major real-world improvements that pushed Tesla’s latest FSD software ahead of every competing ADAS system.

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Credit: Grok Imagine

Tesla’s Full Self-Driving (Supervised) system has been named the best driver-assistance technology on the market, earning top honors at the 2026 MotorTrend Best Tech Awards

The decision marks a notable reversal for the publication from prior years, with judges citing major real-world improvements that pushed Tesla’s latest FSD software ahead of every competing ADAS system. And it wasn’t even close. 

MotorTrend reverses course

MotorTrend awarded Tesla FSD (Supervised) its 2026 Best Tech Driver Assistance title after extensive testing of the latest v14 software. The publication acknowledged that it had previously criticized earlier versions of FSD for erratic behavior and near-miss incidents, ultimately favoring rivals such as GM’s Super Cruise in earlier evaluations.

According to MotorTrend, the newest iteration of FSD resolved many of those shortcomings. Testers said v14 showed far smoother behavior in complex urban scenarios, including unprotected left turns, traffic circles, emergency vehicles, and dense city streets. While the system still requires constant driver supervision, judges concluded that no other advanced driver-assistance system currently matches its breadth of capability.

Unlike rival systems that rely on combinations of cameras, radar, lidar, and mapped highways, Tesla’s FSD operates using a camera-only approach and is capable of driving on city streets, rural roads, and freeways. MotorTrend stated that pure utility, the ability to handle nearly all road types, ultimately separated FSD from competitors like Ford BlueCruise, GM Super Cruise, and BMW’s Highway Assistant.

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High cost and high capability

MotorTrend also addressed FSD’s pricing, which remains significantly higher than rival systems. Tesla currently charges $8,000 for a one-time purchase or $99 per month for a subscription, compared with far lower upfront and subscription costs from other automakers. The publication noted that the premium is justified given FSD’s unmatched scope and continuous software evolution.

Safety remained a central focus of the evaluation. While testers reported collision-free operation over thousands of miles, they noted ongoing concerns around FSD’s configurable driving modes, including options that allow aggressive driving and speeds beyond posted limits. MotorTrend emphasized that, like all Level 2 systems, FSD still depends on a fully attentive human driver at all times.

Despite those caveats, the publication concluded that Tesla’s rapid software progress fundamentally reshaped the competitive landscape. For drivers seeking the most capable hands-on driver-assistance system available today, MotorTrend concluded Tesla FSD (Supervised) now stands alone at the top.

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