Musk says Tesla vehicles are now driving 1 million miles per day using FSD Beta
Not a Tesla App
Tesla's Full Self-Driving (FSD) technology has reached an impressive milestone, as revealed by CEO Elon Musk in a recent tweet. Equipped with the latest FSD update, Tesla vehicles are now actively driving approximately 1 million miles per day across the fleet. This achievement signals significant progress in Tesla's quest to perfect autonomous driving as the company continues to refine its technology and expand its capabilities.
Rapid Improvements in FSD Technology
According to Musk's tweet, Tesla's team has been "closing the loop on interventions very rapidly," meaning that the FSD software is learning from user feedback and real-world driving scenarios at an accelerated pace. This has led to fewer necessary interventions by drivers, making the technology more reliable and safer for everyday use. With Tesla's FSD software now actively driving 1 million miles per day, it becomes evident that these improvements are being utilized not just by FSD Beta testers but across the entire Tesla fleet.
Given the impressive daily mileage figure, we can estimate the average miles driven per vehicle by dividing the total miles by the number of Tesla vehicles on the road. While it's difficult to provide an exact number, it's clear that the FSD technology is experiencing widespread usage, contributing to the rapid improvement in performance.
Simulated Training for Potential Serious Accidents
As Musk's tweet suggests, Tesla increasingly relies on simulated training to enhance the FSD software, especially in situations where potential serious accidents may occur. The reason behind this reliance on simulations is the scarcity of real-world data for such incidents, owing to the relatively low number of accidents within the Tesla fleet. By running these scenarios in a simulated environment, Tesla can train its FSD system to handle dangerous situations more effectively without putting actual drivers and passengers at risk.
As Tesla continues to refine its Full Self-Driving technology, the impressive milestone of 1 million miles driven per day across the fleet marks a significant step forward in the company's pursuit of perfecting autonomous driving. With rapid improvements in FSD performance and an increasing reliance on simulated training, Tesla's dedication to safety and innovation shines through, solidifying its position as a leader in the EV and autonomous vehicle industry.
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While most automakers are adding basic and un-integrated AI assistants to their vehicles, Tesla appears to be working hand-in-hand with xAI to build out an entire cast of characters for in-vehicle Grok. In the latest dive into Tesla’s firmware, Tesla hacker @greentheonly uncovered a few new details about the upcoming Grok feature.
This discovery, part of a larger batch of changes found in Tesla update 2025.20, also offers a hint at the hardware required for the Grok.
A Dozen Groks
While we knew from previous firmware teardowns that Tesla was adding various Grok personalities to the vehicle UI, this update introduces a new one called Language Tutor, which may allow users to learn and practice a new language.
These are the different personas that will be included in Grok:
Icons for these personalities have been added to the firmware for the first time, leading us to think Tesla is getting close to releasing the feature. However, even after the feature is developed and included in vehicle software, Tesla may only enable it selectively — such as for select employees for testing.
Grok is expected to be one of the largest vehicle features added via a software update, so it’ll be a big deal when it’s finally released. While we know more or less what to expect from Grok, what we don’t know is about vehicle requirements or whether it’ll require a subscription beyond Premium Connectivity.
Grok Requirements
While subscriptions required are anyone’s guess, vehicle requirements may be a little clearer now, thanks to Green’s discovery that Grok is only being added to AMD-based vehicle software builds.
Unfortunately, this likely means that older, Intel-based vehicles will not receive Grok support, at least for the time being. When Tesla introduced a voice assistant in China, they also started off with AMD-only support but later added Intel support, so it’s possible that the same could happen with Grok.
Energy Saving
Green also found a new undocumented navigation feature in 2025.20.3. This one focuses on leveraging Tesla’s vast amounts of data in an interesting way and offers drivers proactive advice to save energy on a well-traveled route.
In the Energy App, your vehicle will display, “This route is typically driven at X mph. Slow down by Y mph to save Z% for the rest of this trip.’
As you can see in the photo below, Tesla recognizes that vehicles typically drive at 66 mph on the route being driven and offers the driver the option to go five mph slower to save 1% of range. While this example doesn’t provide much incentive to slow down, it could be useful for someone with a low state of charge or if the savings are more significant.
The new line in the Energy App
Not a Tesla App
In the future, Tesla could even use this, alongside the road surface data they’re gathering, to help plan routes for Robotaxi and Unsupervised FSD.
In a letter to industry, the National Highway Traffic Safety Administration (NHTSA) has announced that it is overhauling its approvals process for vehicles designed without human controls.
The change addresses a regulatory bottleneck that has slowed down American companies like Tesla from deploying purpose-built Robotaxis, rather than relying on using traditional vehicles with steering wheels and pedals. The policy shift is outlined in a letter posted to the NHTSA’s website, which you can find here.
Reducing Approvals From Years to Months
Under the existing rules today, any vehicle that is built without a steering wheel or brake pedals must receive a special exemption from federal safety standards.
Obtaining exemptions for a particular vehicle was a time-consuming process for both the companies requesting exemptions and the NHTSA. The process was often a black box—nobody knew when an exemption might be granted, and approvals could take years.
The NHTSA, under the new administration’s guidelines for autonomous vehicle development, is now committed to streamlining this process. The agency will be implementing a new, faster approach immediately for receiving exemptions for autonomous vehicles without standard controls. The NHTSA expects decisions on exemption requests to be determined within months rather than years.
This change has massive implications for Tesla, which is banking on the production of the simplified and easy-to-maintain purpose-built Cybercab. The Cybercab is developed from the ground up as an autonomous Robotaxi and will be one of the key beneficiaries of this move by the NHTSA.
Knowing that a final design won't be caught in a multi-year regulatory limbo provides a level of certainty that has been missing. It allows Tesla to confidently plan the manufacturing, development, and deployment processes without worrying whether the project will get stuck in regulatory approvals.
According to the letter, the agency will publish its improved instructions for the streamlined process "shortly." With Tesla already having begun Cybercab pre-production and the goals for its deployment as soon as late 2026, there’s still a lot to be done to make autonomy a part of Tesla’s new sustainable abundance mission statement.
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