TL;DR
A Tesla battery loses capacity slowly, and fastest in the first years. Tesla says Model 3 and Model Y Long Range packs lost 15% on average after 200,000 miles. Geotab's April 2026 study of 22,700 EVs of all brands found an average loss of 2.3% a year, about 81.6% of capacity left after eight years. Tesla's warranty guarantees at least 70% for eight years and 100,000 or 120,000 miles, depending on the car. In Geotab's data, frequent fast charging was the habit that moved the numbers most.
How much range does a Tesla lose over time? Less than most new owners fear, but the answer depends on the car and how it is used. Three sources give three different kinds of answer, and they do not match exactly because they measure different things. This guide puts them side by side, then does the arithmetic on a real Model Y.
What does Tesla say about battery degradation?
In its 2023 Impact Report, Tesla said: "Even after 200,000 miles of usage, our batteries in Model 3 and Model Y lose just 15% of their capacity on average, while batteries in Model S and Model X lose just 12% of their capacity on average." We read that quote and the chart behind it in InsideEVs' June 19, 2024 coverage.
Two cautions from the same article. First, InsideEVs believes the Model 3 and Model Y chart covers Long Range packs only, not Standard Range, LFP or 4680 cells. Second, the chart shows a wide spread around the average, so a single car can land better or worse than 85% capacity. An average is not a promise.
What did Geotab find in 2026?
Geotab is a fleet-data company. In a study published April 28, 2026, it analyzed more than 22,700 electric vehicles across 21 models. The average loss was 2.3% of capacity per year, which Geotab says projects to about 81.6% of original capacity after eight years. Those figures cover all brands, not Teslas alone, and Geotab says the data is averaged across large groups, so one car can do better or worse.
Geotab also says many EVs lose more in the first year or two before the rate levels out. Eight of the 11 established models it tracked since 2023 settled at an average of 1.4% a year.
Tesla battery degradation numbers side by side
| Source | What it covers | Figure | Limit of the number |
|---|---|---|---|
| Tesla 2023 Impact Report, via InsideEVs | Model 3 and Model Y, average at 200,000 miles | 15% lost, 85% kept | Likely Long Range packs only; wide spread |
| Tesla Impact Report, via InsideEVs | Model S and Model X, average at 200,000 miles | 12% lost, 88% kept | Different cars and cells |
| Geotab, April 28, 2026 | 22,700 EVs, 21 models, all brands | 2.3% a year, about 81.6% left after 8 years | Not Tesla-only |
| Tesla vehicle warranty | New Teslas, by model and trim | At least 70% retained over 8 years and 100,000 to 150,000 miles | A floor, not a forecast |
What does an average loss look like on a real Model Y?
The 2026 Model Y Premium Rear-Wheel Drive has an EPA rating of 357 miles when new, a figure we keep in our lineup data from EPA fuel economy ratings as of October 4, 2026. Here is that rating after each of the three numbers above:
- After Tesla's 15% average at 200,000 miles: 357 x 0.85 = about 303 miles of rated range.
- After Geotab's 81.6% at eight years: 357 x 0.816 = about 291 miles of rated range.
- At the 70% warranty floor: 357 x 0.70 = about 250 miles of rated range.
These are illustrations of the EPA rating, not predictions for your car. Real-world range also moves with speed, temperature and tires, which is why your rated range and your actual range never match exactly. Put your own model and conditions into the range calculator to see what a lower capacity would mean for your trips.
What speeds up Tesla battery degradation?
Geotab's 2026 data points to a few habits, and InsideEVs adds a note of caution that the science is not settled.
- Frequent fast charging. EVs that used DC fast charging for less than 12% of their charging sessions lost 1.5% a year. Those above 12% lost 2.5% a year. Cars that used chargers above 100 kW in more than 40% of sessions lost 3.0% a year. InsideEVs notes that a Recurrent analysis of 13,000 Teslas found no statistically significant difference, though only 344 of those cars fast-charged often, so neither study ends the debate.
- Hot climates. Geotab found cars in hot conditions, meaning more than 35% of days above 77°F (25°C), lost 0.4 percentage points more per year than cars in mild climates.
- Living at the extremes. Geotab says degradation speeds up only when a car spends more than 80% of its total time at or near full or nearly empty, and that the common 20% to 80% rule matters mainly when a battery sits at those extremes for long stretches.
Cold is the gap in the data. Geotab says its set lacked enough cars in consistently cold climates to measure the long-term effect of extreme cold, so this guide does not claim one. Cold does cut your range on the day, which is a separate topic we cover in how to prepare your Tesla for winter range loss.
Does a degraded battery mean a replacement?
Not by itself. Tesla's warranty page lists the Battery and Drive Unit coverage as eight years and a mileage cap, with a minimum 70% battery capacity retention over that period. The cap depends on the car: for example, the page lists 100,000 miles for Model 3 and Model Y rear-wheel drive and Model Y all-wheel drive, 120,000 miles for the Premium and Performance trims, and 150,000 miles for Model S, Model X and Cybertruck. A car bought earlier follows the warranty in effect on its purchase date, so check yours.
In a Tesla warranty document, the company says range estimates are an imperfect measure of battery capacity, and that Tesla decides how capacity is measured. If your range drops far more than the tables above suggest, contact Tesla service rather than judging by the number on the screen. For costs outside warranty, see what it actually costs to replace a Tesla battery, and for coverage details see what Tesla's warranty covers and for how long.
Tesla battery degradation FAQ
Is 15% loss after 200,000 miles normal? It is Tesla's reported average for Model 3 and Model Y Long Range packs, so it is a reasonable benchmark, with individual cars above and below it.
Should I charge to 100% to protect the battery? Charge limits are a separate question from degradation. Our guide to what charge limit to set for daily driving and our note on how much to charge every day cover it.
Does the battery lose range the day I drive it off the lot? Geotab says many EVs show a sharper drop in the first year or two before the rate levels out, so a small early loss is common.
What to do
- Look up the battery warranty for your trim and purchase date on Tesla's warranty page.
- Do daily charging at home and keep fast charging for trips. Home charging versus Supercharging also compares what each costs.
- Pick a daily charge limit that fits your driving and leave it there.
- Use the range calculator to check that your usual trips still work with some capacity loss.
