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The short answer is that we definitively know yet because most of the oldest ones have not worn out yet.
Recurrent tracks Teslas as old as model year 2012, now 14 years on the road. Tesla vehicles retain 96.3% of their original available range after three years. And across all EVs in the Recurrent community, outside of manufacturer recalls, under 4% have had a battery replaced, including cars more than 10 years old.
Recurrent projects that most modern Tesla packs will outlast the useful life of the vehicle. That is a projection from observed degradation rates, not a measurement.
How the math on lifespan actually works
Tesla's warranty replaces the battery if capacity falls below 70% of original. That gives you a defined finish line: 30 percentage points of capacity.
Recurrent observes 1% to 2% range loss per year across its community. Divide 30 by that rate and a Tesla pack takes roughly 15 to 30 years to reach the warranty floor.
Treat that as arithmetic on an observed rate, not an observation. No Tesla battery has been watched for 15 years, degradation is not perfectly linear, and the curve steepens at end of life. But it is a more defensible way to answer "how long" than any single number, and it explains why Recurrent's battery scientists say healthy packs generally will not need replacement before 15 years.
How often do Tesla batteries actually get replaced?
Recurrent's November 2025 study looked at battery replacements across its community of more than 30,000 connected EVs, excluding recall campaigns, and split them by EV generation:
- Gen 1, model years 2011 to 2016: 8.5% replaced
- Gen 2, model years 2017 to 2021: 2% replaced
- Modern, model year 2022 and newer: 0.3% replaced
The trend line is the story. Older packs fail more, and each generation fails less than the one before it, as battery management systems improve and chemistries change.
Two caveats we will name ourselves. First, the overall rate rose from Recurrent's prior study, because the earliest EVs keep getting older. Second, Recurrent recorded an uptick in Tesla replacements on 2019 and 2021 models specifically. Tesla replaced most of those with LFP packs, which should give the replacement a longer life than the original.
Note that the generation figures span all makes. Gen 2 includes the Tesla Model 3 alongside the early Chevrolet Bolt EV, so 2% is not a Tesla-only number.
How much range do Teslas keep?
Recurrent's model-level data shows the Tesla Model 3 holding 95% of its original range at three years and 93% at five. The Tesla Model Y holds 96% at three years and 95% at five.
Divide the five-year gap evenly and that works out to about 1.4% per year for the Model 3 and 1.0% per year for the Model Y. Averaging that way smooths over the faster first-year drop, so real early years run higher and later years lower.
For the longest record available, the 2012 Tesla Model S is the only EV with a real decade-plus of data. Many older Model S vehicles still deliver about 80% of their original range.
Model-specific detail: Tesla Model 3 guide, Tesla Model Y guide, Tesla Model S guide.
What the warranty guarantees
Tesla covers the battery for 8 years or 100,000 miles, rising to 120,000 miles on Long Range trims, with a 70% capacity threshold. Remaining warranty transfers when the car is sold. A used Tesla bought from Tesla itself carries an additional year.
The percentage matters more than the years. A warranty that runs 10 years but guarantees only 65% capacity is weaker than a shorter one guaranteeing 75%. Compare EV battery warranties.
What if the battery does need replacing?
A Tesla battery replacement runs $15,000 to $22,000 outside the warranty window, with pack size the main variable. The Model 3 sits at the low end, around $15,800 including labor. The Model S runs $20,000 to $22,000.
Most replacements happen under warranty and cost the owner nothing. Third-party specialists will repair packs or fit used ones for less than a factory replacement. Tesla battery replacement costs by model.
Why we say we don't know
Around 75% of EVs on US roads were sold in 2023 or later. They are too new to show meaningful degradation, which skews nearly every public dataset toward young cars, including ours.
Recurrent tracks replacements through recall status, owner self-reports, and unusual jumps in observed range that indicate a pack swap. Each of those has gaps. Recurrent's community also is not representative of all EVs, because data connectivity varies by make and model year.
What we can say is what the cars are doing. The oldest ones still work, and the newer ones are failing less often than the old ones did.
Track your own battery
Recurrent gives US Tesla owners a free Battery History capacity estimate and a three-year range projection. Connect your Tesla. Shopping instead? Range Score appears on listings at Cars.com, Edmunds.com and CarMax.com.
Dive deeper
- New data: how long do electric car batteries last?
- How much battery degradation should I expect in my Tesla Model 3?
- EV battery health after 250 million miles
- How EV batteries degrade
- Sell your Tesla with Recurrent
The chart below shows observed range degradation as real Tesla Model Ss age.
