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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.

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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.

Performance Chart P85D Ludicrous Mode Upgrade

[Image source: thimel via TMC]

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.

 

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thimel chart 2

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.

P85D Ludicrous Mode acceleration

[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.”

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Tesla Cybercab production starts Q2 2026, Elon Musk confirms

Elon Musk highlighted that the fully autonomous vehicle will be the first Tesla designed specifically for unsupervised self-driving.

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Credit: Tesla/X

Tesla CEO Elon Musk confirmed that production of the company’s autonomous Cybercab will begin in April 2026, and its production targets will be quite ambitious. 

Speaking at Tesla’s 2025 Annual Shareholder Meeting, Musk highlighted that the fully autonomous vehicle will be the first Tesla designed specifically for unsupervised self-driving.

A robotaxi built for an autonomous world

Musk described the Cybercab as a clean-slate design optimized for autonomy, with no steering wheel, pedals, or side mirrors. “It’s very much optimized for the lowest cost per mile in an autonomous mode,” Musk said, adding that every Tesla produced in recent years already carries the hardware needed for full self-driving.

The Cybercab will be assembled at Giga Texas and will serve as the company’s flagship entry into the commercial robotaxi market. Musk emphasized that the project represents Tesla’s next evolutionary step in combining vehicle manufacturing, artificial intelligence, and mobility services.

One Cybercab every ten seconds

Musk reiterated that the Cybercab’s production process is more closely modeled on consumer electronics assembly than on traditional automotive manufacturing. This should pave the way for outputs that far exceed conventional automotive products.

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“That production is happening right here in this factory, and we’ll be starting production in April next year. The manufacturing system is unlike any other car. The manufacturing system of the Cybercab, it’s closer to a high volume consumer electronics device than it is a car manufacturing line. So the net result is that I think we should be able to achieve, I think, ultimately, less than a 10-second cycle time, basically a unit every 10 seconds.

“What that would mean is you could get on a line that would normally produce, say, 500,000 cars a year at a one minute cycle time, Model Y. This would be maybe as much as 2 million or 3 million, maybe ultimately it’s theoretically possible to achieve a 5 million unit production line if you can get to the 5-second cycle time,” the CEO said.

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Tesla China expecting full FSD approval in Q1 2026: Elon Musk

The CEO shared the update during Tesla’s Annual Shareholder Meeting.

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Credit: Tesla Europe & Middle East/X

Elon Musk has provided a concrete estimated date for Full Self-Driving’s (FSD) full approval in China. While a version of the system has been deployed to some users in China, the company only holds partial approval for FSD features in the country.

The CEO shared the update during Tesla’s Annual Shareholder Meeting, where stockholders also voted to approve Elon Musk’s ambitious 2025 performance award.

Elon Musk’s China FSD update

During the meeting, Elon Musk stated that Tesla expects to secure full regulatory approval for its Full Self-Driving (FSD) system in China by February or March 2026. This would mark a potential breakthrough in one of the world’s most competitive EV markets.

“We have partial approval in China, and we hopefully will have full approval in China around February or March or so. That’s what they’ve told us,” Musk said.

Tesla’s rollout of FSD features in China began in February 2025 under update 2024.45.32.12, which introduced what the company locally called “Autopilot automatic assisted driving on urban roads.” While not officially branded as FSD, the feature mirrored Tesla’s inner-city capabilities.

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Positive feedback from China

Feedback from local drivers suggests strong real-world performance for the company’s “Autopilot automatic assisted driving on urban roads” feature. One driver who used the system for two months described it as “well-calibrated and human-like,” adding that it “slows appropriately on narrow streets and picks up speed on major roads.” The Tesla owner further reported zero safety interventions over his testing period, calling the system “almost too polite” when encountering pedestrians and scooters.

A Tesla Model 3 driver was also able to drive to the base camp of Mount Everest from Henan Province, a journey of about 4,000 kilometers (2,485 miles), using “Autopilot automatic assisted driving on urban roads.” The driver’s trip was livestreamed on Chinese social media, where it attracted a lot of interest from viewers. 

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Tesla Optimus’ pilot line will already have an incredible annual output

And this would just be the beginning. In the future, Musk mused that Optimus’ production could literally be out of this world.

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(Credit: Tesla)

During the 2025 Tesla Annual Shareholder Meeting, Elon Musk provided a teaser of the company’s targets for Optimus’s annual production. As per the CEO, Optimus’ pilot line will be capable of producing up to one million units annually. 

And this would just be the beginning. In the future, Musk mused that Optimus’ production could literally be out of this world.

Musk targets world’s fastest production ramp for Optimus robots

Tesla’s first Optimus line will be built in Fremont, California, and is projected to produce around one million robots per year. Other facilities like Gigafactory Texas could scale Optimus production to 10 million units annually. Musk even joked that a 100-million-unit line might one day be built “on Mars.” With Optimus, Musk stated that Tesla is looking to achieve a historic production ramp. 

“So we’re going to launch on the fastest production ramp of any product of any large complex manufactured product ever, starting with building a one million unit production line in Fremont. And that’s Line One. And then a 10-million-unit-per-year production line here (at Giga Texas). I don’t know where we’re going to put the one hundred million unit production line, maybe on Mars. But I think it’s going to literally get to one hundred million a year, maybe even a billion a year,” Musk said.

Optimus and sustainable abundance

Tesla’s Master Plan Part IV is all about sustainable abundance, and Musk highlighted that the humanoid robot will play a huge role in his vision for the future. He noted that Optimus’ mass production could redefine economic and social systems worldwide and open up premium services for everyone across the globe. 

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“People often talk about eliminating poverty or giving everyone amazing medical care. There’s only one way to do that, and that’s with the Optimus robot,” Musk said. “With humanoid robots, you can actually give everyone amazing medical care. In terms of Optimus will be more precise. Optimus will ultimately be better than the best human surgeon with a level of precision that is beyond human… People always talked about eliminating poverty, but actually, Optimus will actually eliminate poverty,” Musk said.

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