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Performance Gains after P85D Ludicrous Mode Upgrade
TMC member thimel recently had the Ludicrous mode upgrade installed on his Model S P85D. He carefully measured the performance of his car before and after, and found that Ludicrous mode is worth about a half second to 60 mph and a noticeable increase in power at all speeds up to 80.

Just how much faster is the the P85D with Ludicrous Mode upgrade? According to Tesla Motors Club (TMC) member thimel, the performance gains are significant, to the tune of 19% more power above 30 mph and a drop in 0-60 time from 3.2 to 2.9 seconds. Quarter mile time also drops from an already quick 11.8 seconds to an astounding 11.5 seconds.
thimel carefully measured the performance of the P85D both before and after the Ludicrous Mode upgrade. The performance data was then meticulously charted and plotted, painting a clear picture of the performance differences from the $5,000 retrofit.
According to thimel’s post from the TMC forum, “I started the before Ludicrous tests early in the morning and had not driven the car for many hours, but had charged it that night. The ambient temperature in my garage that morning was 59 degrees and it was 50 degrees outside during the tests. I started with a 90% charge and by the time I was done the charge was 70%. Creep mode was off to help avoid a very slow start. Insane mode was on of course. Climate control was off.
“I drove a few miles before starting the first test but did nothing else to warm the battery. I drove 5 miles at moderate acceleration and speeds between acceleration passes. This was both to give a chance for things to cool down and to return me to the same starting point for each acceleration pass.data shows the Ludicrous mode upgrade it worth nearly a half second in the sprint to 60 mph and several more miles per hour at the end of the quarter mile. ”
Next he charted his power and speed against time and found power to range from 380 kW, before the Ludicrous upgrade, to 451 kW after the upgrade with the Max Battery Power setting on. The setting heats the Tesla battery to a higher temperature thereby reducing its impedance and increasing current to provide short term acceleration and performance gains.
The biggest boost in performance after the Ludicrous upgrade happens above 30 mph. Below that, performance is about the same. But with Ludicrous mode engaged, there is a sizable increase in available torque. Before the upgrade, lateral acceleration reaches approximately 1.15 g at 15 mph, then falls below 1 g after 25 mph. After the upgrade, lateral acceleration peaks at 1.1 g and continues to pull over 1 g until slightly past 30+ mph. Most notably, the acceleration is consistently above the pre-Ludicrous Mode upgrade all the way until 80 mph.

[Image source: thimel via TMC]
In his notes, thimel makes some interesting points. “Above 30 mph, ludicrous clearly has more power. This is seen directly with the PowerTools readout…..which shows the maximum power increased from 380 to 451 kW, a 19% increase and by the shorter times to achieve speeds above 30 mph. The max power measured from the battery was 451 kW. This compares to 458 kW that Pete90D measured on his P90DL. So the battery doesn’t make much of a difference. The 0-60 time I got of 2.89 is also nearly identical to that Pete90D got of 2.901.”
He ends his post with this conclusion: “The P85D with ludicrous upgrade is significantly faster than without. There is 19% more power above 30 mph, 0-60 time drops from 3.2 to 2.9 seconds and the quarter mile time drops from 11.8 to 11.5. So it was fast before and is faster now. You get about two-thirds of the improvement if you don’t heat the battery with max battery power.”
News
Tesla launches Full Self-Driving in a new region
Today, Tesla launched Full Self-Driving in Australia for purchase by car buyers for $10,100, according to Aussie automotive blog Man of Many, which tried out the suite earlier this week.

Tesla has launched its Full Self-Driving suite in a new region, marking a significant step in the company’s progress to expand its driver assistance suite on a global scale.
It is also the first time Tesla has launched FSD in a right-hand-drive market.
Today, Tesla launched Full Self-Driving in Australia for purchase by car buyers for $10,100, according to Aussie automotive blog Man of Many, which tried out the suite earlier this week.
Previously, Basic and Enhanced Autopilot suites were available, but the FSD capability now adds Traffic Light and Stop Sign Control, along with all the features of the previous two Autopilot suites.
🚨 Tesla has officially launched Full Self-Driving in Australia for the price of $10,100 outright.
The move marks a significant step in Tesla’s progress to expand the suite on a global scale pic.twitter.com/zzHa8Ngqls
— TESLARATI (@Teslarati) August 28, 2025
It is the first time Tesla has launched the suite by name in a region outside of North America. In China, Tesla has “City Autopilot,” as it was not permitted to use the Full Self-Driving label for regulatory reasons.
However, Tesla still lists Full Self-Driving (Supervised) as available in the U.S., Canada, China, Mexico, and Puerto Rico.
The company teased the launch of the suite in Australia earlier this week, and it appeared to have been released to select media members in the region earlier this week:
Tesla FSD upcoming Australia release seemingly teased bv media
The rollout of Full Self-Driving in the Australian market will occur in stages, as Model 3 and Model Y vehicles with Hardware 4 will receive the first batch of FSD rollouts in the region.
TechAU also reported that “the initial deployment of FSDs in Australia will roll out to a select number of people outside the company, these people are being invited into Tesla’s Early Access Program.”
Additionally, the company reportedly said it is “very close” to unlocking FSD in customer cars:
BREAKING: Tesla has officially announced that FSD (Supervised) is launching in Australia, marking a huge milestone for the company.
The rollout will happen in stages. HW4 Model 3s and Model Ys will get it first. Tesla says it is “very close” to being unlocked in customer cars.… pic.twitter.com/r1dYnFRa6o
— Sawyer Merritt (@SawyerMerritt) August 28, 2025
Each new Tesla sold will also come with a 30-day free trial of the suite.
Australia is the sixth country to officially have Full Self-Driving available to them, following the United States, Canada, China, Mexico, and Puerto Rico.
Here’s the first look at the suite operating in Australia:
News
Tesla AI6 chips will start sample production at surprising Samsung site
AI6 is expected to be used in Tesla’s expanding lineup of high-volume products, such as the Cybercab and Optimus.

It appears that the initial sample production of Tesla’s next-generation AI6 chip would not start in Samsung’s United States-based facilities.
AI6 is expected to be used in Tesla’s expanding lineup of high-volume products, such as the Cybercab and Optimus.
Early AI6 production
As noted in a ZDNet Korea report, the production of initial samples of Tesla’s AI6 chip is expected to start at Samsung Electronics’ domestic foundry and packing facilities in South Korea. Mass production for AI6 chips will follow at the tech giant’s Texas-based foundry in Taylor, which is expected to start operations in 2025. Investment in mass production facilities for the Taylor plant are expected to start this year, the publication noted.
Samsung has reportedly finalized the process design kit for its second-generation 2nm technology. This node offers a 12% performance improvement, 25% lower power consumption, and an 8% reduction in chip area compared to its previous-generation counterparts.
Tesla’s AI6 deal
As per previous reports, Tesla has signed a $16.5 billion contract with Samsung for the production of its AI6 chips. In a post on social media platform X, Musk clarified that $16.5 billion is actually just the bare minimum. Considering that the demand for AI6 chips will be substantial due to the ramp of products such as Optimus and the Cybercab, it would not be farfetched if the deal becomes notably larger in the future.
Musk has shared his excitement for Samsung’s production of AI6 chips, with the CEO stating on X that he would “walk the line personally” in the facility to “accelerate the pace of progress.” In a follow-up comment, the Tesla CEO stated that Samsung is fully aware of what a real partnership with Tesla will be like. “I had a video call with the chairman and senior leadership of Samsung to go over what a real partnership would be like. Use the strengths of both companies to achieve a great outcome,” Musk wrote in his post.
News
Elon Musk’s Boring Company begins Tesla FSD testing in Las Vegas tunnels
The update was shared by Las Vegas Convention and Visitors Authority (LVCVA) CEO Steve Hill.

The Boring Company has started testing Tesla’s Full Self-Driving (Supervised) system in its Las Vegas tunnels.
The update was shared by Las Vegas Convention and Visitors Authority (LVCVA) CEO Steve Hill in a comment to Fortune.
Controlled FSD testing
In his comments, Hill noted that Tesla’s FSD tests in the Boring Company’s underground tunnels in Las Vegas have been going on for months. However, the full-self driving Teslas have reportedly not been carrying passengers during the tests. Interestingly enough, Hill noted that the FSD-driven vehicles have not had any incidents in the Boring Company tunnels yet, though safety drivers have been required to intervene “periodically.”
Hill further noted that the self-driving Teslas have found some spots that seem quite difficult in the underground tunnels system. The LVCVA CEO added that the rock walls of the Boring Company tunnels and their colorful lighting have created some “interesting but odd lighting” for FSD. That being said, Hill noted that the FSD tests are ongoing, though the LVCVA will likely be a consultant before the self-driving vehicles’ safety drivers are removed.
The executive, however, noted that it will only be a matter of time before the Teslas in Las Vegas’ Boring Company tunnels are operating without a driver. “Sooner or later, this is going to be autonomous,” Hill said.
Vegas Loop updates
The Boring Company’s underground transit system has been operating beneath the Las Vegas Convention Center for about four years. While the network is slated for expansion across more of the city, it currently connects the convention grounds with a handful of nearby hotels. Updates from the Boring Company’s official social media account on X suggests that tunneling is underway across other stops in Las Vegas.
As per the Boring Company on its official website, the greater Vegas Loop, when completed, will have 104 stations across 68 miles of tunnels. This should allow the underground system to serve an estimated 90,000 passengers per hour. It will also be able to connect key locations across the city, such as Harry Reid International Airport, Allegiant Stadium, and downtown.
While the Vegas Loop is nowhere near complete, Hill noted that the system is already well appreciated by residents and visitors. As per the LVCVA CEO, the underground transport system is the “highest rated feature we have” at the Convention Center. “People love it,” he said, adding that the only reason the tunnels are not coming faster is due to holdups with permits. “We’re holding them back. They’re not holding us back,” he stated.
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