EV Batteries Keep 90% Charge After 93K Miles

That nagging worry about electric car batteries dying too soon? A huge new study says you can relax.

Most electric vehicles keep about 90% of their battery power even after clocking 150,000 kilometers (93,000 miles), according to research from Aviloo, an Austrian company that tests battery health. They analyzed over 500,000 tests on 20 popular EV models, including Tesla's Model Y and Volkswagen's ID.4, between 2022 and 2026.

The results crush one of the biggest fears stopping people from going electric. After 50,000 km, the median battery health ranged from 91% to 97%. After 100,000 km, it stayed strong at 88% to 95%.

Here's why this matters. Most EV warranties cover batteries for eight years or 100,000 miles, requiring replacement only if capacity drops below 70%. Based on this data, most drivers won't come close to needing that warranty.

But not all batteries age the same way, even in identical car models. Marcus Berger, CEO of Aviloo, says climate, driving habits, and charging patterns make a huge difference.

Hot climates speed up battery wear. The Nissan Leaf ZE1 showed the biggest variation, with some batteries at 150,000 km performing 13.5 percentage points better than others.

The simple trick most people miss? Don't park your EV fully charged. Berger says keeping your battery between 30% and 70% when parked protects it far better than leaving it at 80%, 90%, or 100%.

Why This Inspires

This research gives future EV buyers real numbers to fight their fears. For years, people worried electric cars would become expensive paperweights once their batteries degraded.

Now we know better. Three major UK EV organizations are pushing for mandatory battery health certificates, similar to used car inspections. Tesla UK's James Strong says national battery health standards would strengthen buyer confidence and reward owners who treat their vehicles right.

The used EV market is about to get a major boost from data like this.