EV batteries don't degrade as much as people once feared, research shows.
But results after tens of thousands of miles can vary widely across models.
The Tesla Model 3 was among the weakest performers in a large study of battery aging. The Model Y did better.
Now that EVs have been mainstream for about a decade, we have more real-world data on battery longevity than ever. Thankfully, it turns out that modern EV batteries hold up pretty well, even after years of racking up miles and charging sessions. Some makes and models do better than others, though. One giant study published this week laid out how popular EVs age, and anybody in the market for a used Tesla Model Y or Model 3 should take note.
On Wednesdaly, Aviloo, a battery diagnostics company from Austria, released the results of 500,000 EV battery tests conducted around the world since 2022. It zeroed in on 20 models and laid out the median battery health score for each model at three different mileages: 50,000 kilometers (31,068 miles), 100,000 km (62,137 miles), and 150,000 km (93,205 miles). The battery health score reflects how much of the vehicle's original, usable battery capacity is left.
