Data

What's Normal Tesla Battery Degradation? Data from 100,000+ Vehicles

“My Tesla lost 15 miles of range in the first year — is that normal?”

This is probably the most common question in Tesla forums. The short answer: yes, probably. But let’s look at the data.

The Degradation Curve

Tesla batteries don’t degrade linearly. The pattern looks like this:

1. Year 1 (0–15,000 miles): 3–5% capacity loss. This is the steepest decline and it’s completely normal. The battery chemistry stabilizes during initial cycling.