Tesla offers owners an easy-to-use battery health tool, which allows users to view the degradation of their vehicle’s battery and improve the range estimate.
Battery Health
Like all batteries, electric vehicle batteries naturally degrade over time as a result of the chemical reactions that occur during charging and discharging cycles. Other factors also play a role, but the number of charge cycles and how long the battery stays at low or high states of charge play one of the biggest roles.
Your battery’s health refers to how much of its original energy capacity remains. For example, a battery at 85% health has lost about 15% of its capacity, meaning your vehicle will deliver roughly 85% of the range it had when new.
Battery Degradation
Battery degradation is worst in the first few months of ownership, and you will see the steepest degradation (1-3%) as your vehicle settles in. Part of this initial decline is due to the Battery Management System (BMS), which recalibrates to provide a more conservative and accurate estimate of your vehicle’s range and charging capacity.
According to Tesla, vehicle batteries generally degrade at a rate of about 15% per 200,000 miles, with the first year of ownership accounting for approximately 5% of this degradation. Battery degradation is less of an issue in modern EVs than many people think, because the BMS systems have become much more accurate and intelligent.
Tesla offers a long warranty on its vehicles, covering both the battery and the drive units. These warranties cover up to 70% pack retention, meaning that if your battery health degrades below the 70% mark while under warranty, Tesla will replace your battery pack.
Tesla provides a drive train and battery warranty on its vehicles, which is longer than the standard vehicle warranty. This warranty guarantees the battery will have at least 70% of its original capacity within the given time period. If your battery health drops below that threshold during the coverage period, Tesla will replace the battery pack.
The warranty varies slightly based on your Tesla model and configuration, which is outlined below:
Vehicle
Warranty
Model S, Model X, Cybertruck
8 Years / 150,000 mi (240,000km)
Model 3 / Model Y RWD
8 Years / 100,000 mi (160,000km)
All Other Model 3 / Model Y
8 Years / 120,000 mi (192,000km)
How to Test Battery Health
Not a Tesla App
While you can usually get a fairly accurate estimate of your Tesla’s battery health by calculating the amount of miles the vehicle could travel when charged to 100% and comparing that to the vehicle’s original range, Tesla has also added a tool to give you a better estimate.
Tesla has a user-friendly method of testing your vehicle’s battery health. The tool is practically identical to the one available through Service Mode, and the test and results are the same.
In order to test your vehicle’s battery health, you can navigate to Controls > Service, and then scroll down and select Battery Health. Upon tapping the button, the vehicle will display requirements for the battery test and the date and health of your last battery test.
Battery Health Test Requirements / How Long It Takes
Your vehicle will need to plugged in to a Wall Connector or Mobile Connector for up to 18 hours to run the battery test. The charger will need to be able to provide at least 5 kW of power, which is roughly about 20 amps at 240v.
The total amount of time the test will take will vary based on your vehicle’s battery size, your charging speed and the current battery level. If you’re unable to finish a battery health test and need the vehicle before it has completed, you can stop the test at any time.
Your vehicle will also need to be at a 20% or less state of charge, so you’ll need to plan accordingly.
The other requirements should be straight forwar and are listed here:
Vehicle is in Park
Battery level is at 20% or less
Vehicle is connected to the Internet
No software updates are scheduled
No battery or thermal alerts are active
Vehicle is connected to an AC charging station
AC charging equipment can provide at least 5 kW of power
Running the Battery Test
During the battery test, your vehicle will discharge and charge your battery to calibrate the BMS. Therefore, the lower the state of charge, the quicker the test will run and less energy will be wasted.
Your vehicle will run the motors and heat pump or heater to help discharge energy until the batteries are nearly empty, and then begin charging.
During the test, you may hear your vehicle’s fan run at maximum speed and become very loud, especially in an enclosed garage while the vehicle is discharging. This is normal and your vehicle is just using up energy.
Battery Test Results
Not a Tesla App
Once the battery test has completed, you’ll receive a notification in the Tesla app. You can check the results in the vehicle or in the Tesla app by navigiating to Service > Battery Health.
Most vehicles will have a degradation range between 10-20%, depending on your charging habits, age and use of your battery.
If you receive a result that’s 70% or less and are within the warranty period, you should reach out to Tesla for a replacement.
Since your battery test will recalibrate the vehicle’s BMS, you may see your vehicle’s range adjusted after the test. Keep in mind that the range of your vehicle hasn’t been affected and the vehicle is simply displaying a more accurate estimate of its range.
Note: Once the battery test completes, the vehicle will keep your battery at 100%, which isn’t a good practice for battery health. It’d be a good improvement if Tesla used up energy to bring the battery level back to the charge limit if the vehicle isn’t used after an hour or two.
You should not leave your vehicle at 100% unless you have a LFP battery. Plan to go for a drive shortly after the battery test completes. If you can’t drive, we recommend running the climate system to use up some energy.
Test Limitations
Since Tesla’s battery test uses up energy and discharges your battery to near 0% and then charges it to 100%, it’s best not to perform it often. Tesla also only allows one battery test every six months, unless you go into Service Mode to perform the battery test.
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In a live two-part interview with CNBC’s David Faber yesterday, Elon Musk laid out his ambitious near-term plans for Tesla’s Robotaxi Network and the broader rollout of Unsupervised FSD. Speaking from Giga Texas, Elon confirmed that Tesla will be launching its initial Robotaxi pilot service on Austin’s roads by the end of June 2025.
Tesla Already Testing Robotaxi With Safety Drivers
The upcoming Austin launch is the start of Tesla’s long-stated Robotaxi ambitions. After promising true FSD for years, it appears that Tesla is finally ready to debut it, albeit it’ll be closed to the public initially, and it will only be available on Tesla-owned vehicles for now.
Elon expressed confidence in that end-of-June timeline, revealing some of the extent they’ve gone to behind the scenes. Tesla has had test vehicles driving in Austin 24/7, currently with drivers in the cars. However, they’ve seen essentially no interventions required from the safety drivers during the testing phase, which is good news.
The initial deployment in Austin will be deliberately small to ensure that everything operates as expected.
"So we want to be very careful with the first introduction of unsupervised full self-driving, meaning that there’s the cars driving around with no one in it... Well, yes, and sometimes no one in it at all. Just going to pick someone up. So the car obviously has to be incredibly safe." - Elon Musk on CNBC
How the Robotaxi Network Will Operate
Musk said that Tesla intends to launch with just 10 Robotaxis for the first week and then slowly increase it to 20, 30, 40, and higher. All of that is to be done without a safety driver. Tesla will still have teleoperators supervising the vehicles remotely if they get stuck, but other than that, they will be in motion without an occupant in the driver’s seat.
The goal is to hit 1,000 active Robotaxis within a few months and then focus on expansion towards San Francisco, Los Angeles, and San Antonio. While Tesla could start with 1,000 or 10,000 - given that the initial vehicles are just Model Ys, Tesla wants to keep a tight leash on the fleet and make sure that both the safety and experience are up to snuff.
Geofenced and Avoid Certain Intersections
To further increase safety during the early phases, Elon confirmed that Tesla will geofence the Robotaxis' operational areas within Austin, limiting them to parts of the city where Tesla has the highest confidence in the system's performance. He stated they would avoid intersections unless the system is proven to handle them well, or route around them. While the goal is for the cars to operate without safety drivers, there will be rigorous remote monitoring of the fleet's activities.
Looking at the broader regulatory picture, Elon acknowledged the current complexities, with rules varying by state and even by city. He reiterated his call for a "unified set of national regulations" for self-driving vehicles in the U.S. to ensure consistency and prevent a confusing patchwork of differing rules as vehicles travel across jurisdictions.
This seems to be a great idea, at least initially. Autonomous cars will be safer if they adhere to the same rules everywhere rather than having different rule sets based on the state. However, one issue is that pedestrians and human-driven vehicles may expect the vehicles to either perform or refrain from certain actions, such as not turning right at red lights, and having different rules for self-driving vehicles could cause confusion.
Adding Your Vehicle to the Robotaxi Network
During the interview, Elon painted a picture of a rapidly expanding fleet of privately owned Teslas capable of unsupervised FSD. He offered a bold prediction for the near future:
"My prediction is that probably by the end of next year [end of 2026] we will have probably hundreds of thousands, if not—... Over a million Teslas doing self-driving in the U.S. ... Unsupervised full self-driving, where you do not need to pay attention." - Elon Musk on CNBC
Tesla eventually plans to allow vehicle owners to add or subtract their cars from the Robotaxi fleet, creating a model he likened to a combination of Uber and Airbnb. This would allow owners to generate revenue when their vehicle isn’t being used, with Tesla receiving a portion of the revenue.
He also mentioned that Tesla owners will likely even make more from their cars participating in the fleet than their lease costs. Elon seemed confident in Tesla's ability to manage the logistics, stating, "Tesla has all the ingredients necessary to offer a vast self-driving fleet overnight."
Elon on Vision-Only and Licensing FSD
Elon also took the opportunity to emphasize that Tesla’s approach to autonomy, based on vision, is the ideal approach. The road system is designed for humans with eyes, so using neural nets with cameras is the ideal solution.
"Because the way that the road system is designed is for AI. It’s basically, I should say, it’s for intelligence, biological neural net, and eyes. That’s how the whole road system is designed. So what will actually work best for the road system is artificial intelligence, digital neural nets, and cameras... And what we found is that, when you have multiple sensors, they tend to get confused. So do you believe the camera or do you believe lidar? - Elon Musk on CNBC
While Tesla previously included radar in its vehicles, the disagreements between the radar and camera data led to uncertainty, prompting Tesla’s engineers to turn the radars off instead. The decision wasn’t about the expense, as per Elon’s comments, but rather on the reducing utility of other sensor types when camera vision becomes more accurate.
Elon also confirmed that Tesla is "very much open" to licensing its FSD technology to other major automakers and is currently in discussions with several. "The more we demonstrate the capability of self-driving, the more that they will want to license it, and we’re happy to help," he added.
Optimus and Learning
While the interview primarily focused on Tesla’s ambitions for autonomy, Elon also touched on other key aspects of Tesla’s business and future. He reiterated that Optimus and autonomy will “overwhelmingly” dominate the future financial success of Tesla. At multiple Earnings Calls, Elon has said much the same, so it's not surprising to see him stick to this belief.
Elon provided more color on Optimus's development, noting that while achieving the goal of billions of humanoid robots is at least a decade away, even with insatiable demand. He reaffirmed that the target of producing a million robots by 2030 was still reasonable. The training process is evolving; currently, human operators in motion capture (MOCAP) suits perform basic tasks (picking up objects, opening doors, dancing) to bootstrap the robot's intelligence.
The next threshold, Elon explained, is for Optimus to learn from watching videos, like YouTube "how-to" guides, enabling dramatic "task extensibility." Following that, "self-play," where robots learn by interacting with objects, like a child with toys, guided by a reward function, will be key.
Within five years, Tesla envisions Optimus being capable of household chores like doing dishes, walking the dog, and even proactively understanding and fulfilling user needs. This level of AI advancement requires immense compute. Elon confirmed Tesla's own Dojo training program, based in New York, is contributing, though Tesla will continue to buy many GPUs from Nvidia.
Watch the CNBC Interview
FULL ELON INTERVIEW ON CNBC (PARTS I & II)
Here's the complete, consolidated interview of Elon Musk with David Faber, recorded yesterday in two parts at Giga Texas. (The second part starts at 23:54)
Like Europeans, Australian Tesla owners have been eagerly awaiting the arrival of FSD for years, but it looks like there’s finally some good news coming. Thom Drew, Head of Tesla Australia, has confirmed that the company is actively working to bring FSD to Australian roads and, most importantly, sees no regulatory challenges blocking its path.
This update from Thom follows a video that was shared by Tesla’s AI account on X, where they showed off FSD successfully navigating the streets of Melbourne.
Speaking to Australia’s News.com, Thom Drew provided some context behind Tesla’s Australian FSD efforts. He noted that Elon’s push and focus is the deployment of FSD globally. The engineering team is working across a lot of markets to actively push out FSD wherever possible.
Notably, Drew emphasized the favorable regulatory environment in Australia. He specifically noted that “There’s currently no blockers in Australia to releasing FSD, as we have in North America.” While he didn’t provide a specific timeline for launch, it was clear he was enthusiastic.
The lack of a regulatory blocker is great news for Australians, as Tesla’s FSD efforts in Europe have been plagued with regulatory issues. While the Australian market poses some new challenges as a right-hand drive market, at least Tesla is in control there.
Hook Turn
At the end of the video above, FSD tackles something unique to Australia - the Hook Turn. This is a relatively unique maneuver that’s specific to Melbourne’s Central Business, where vehicles turn right from the far-left lane.
For those familiar with Melbourne, that maneuver is notoriously tricky—and at times even unsettling—since even experienced human drivers can struggle with the unusual complexity of that turn. Having FSD successfully demonstrate its skill in navigating these local complexities and laws is an indication that Tesla’s data-gathering methods work well and are scalable to unique location-based rules and regulations.
What This Means for Australian Owners
Given that Australian FSD is in active development and that there’s a clear regulatory path for Supervised FSD in Australia, that’s a good sign of things to come. It seems fairly likely that Tesla will be able to release FSD in Australia by the end of 2025, if not sooner.
Last year, Tesla initially said that RHD markets would receive FSD in Q1/Q2. With Q2 coming to an end in about a month, Tesla may not be too far off the mark here.
It's important to remember that this refers to FSD (Supervised), meaning the driver must remain vigilant and ready to take control at all times, consistent with its behavior in North America and China. However, Australia's lack of regulatory blockers is a huge advantage for Tesla compared to other regions like Europe and even China, where Tesla needed to jump through hoops to get FSD approved.
If you’re in Australia, keep an eye out; FSD may be coming sooner than you think.
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