Every lithium-ion battery loses some capacity over time, and a Tesla’s is no exception. The question new owners actually care about is how much, and how fast — and the real-world data is more reassuring than the anxiety around it suggests.
What the data shows
Recurrent, which tracks degradation across a large community of connected EVs, finds a Tesla Model 3 typically retains about 95% of its original range after three years and roughly 93% after five — a loss of about 1–2% per year on average. In real numbers, a Long Range Model 3 that started with 300 miles of range loses around 15 miles by year three. Recurrent’s data also shows the fastest losses happen early, in the first 10,000–20,000 miles, as the battery’s chemistry settles, then the rate slows down considerably.
Tesla’s own long-term figures back this up at higher mileage. According to Tesla’s most recently published Impact Report, as reported by InsideEVs, Model 3 and Model Y Long Range batteries lose an average of about 15% of their original capacity after 200,000 miles — meaning a pack that started with 100 kWh of usable energy still holds around 85 kWh at that point. Model S and Model X batteries show a similar pattern, averaging around 12% loss over the same distance. Tesla hasn’t published a materially different figure since, so treat this as the best available long-mileage benchmark rather than a brand-new 2026 finding.
What’s covered, and what it means for you
Tesla’s battery warranty guarantees at least 70% of original capacity for 8 years or, depending on the model, 100,000–120,000 miles — and if a battery drops below that threshold within the warranty window, Tesla repairs or replaces it at no cost. Based on the degradation data above, most owners never get close to that floor during the warranty period; a Tesla that’s lost 10–15% of its range after 100,000–150,000 miles is behaving normally, not failing.
The practical takeaway: don’t budget for a battery replacement as a routine maintenance cost. Degradation is real, but for most drivers it shows up as a handful of fewer miles per charge over several years, not a cliff.
Photo by Ramesh Kambattan.
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