- ADAC, the biggest German automobile association, measured a Tesla Model Y’s battery health after 87,000 miles.
- Its peak charging power fell from 257 kW to barely above 200 kW.
- In 30 minutes, it now adds 13% less energy than when it was new.
Most of the EV battery degradation stories we cover come from owners testing their vehicles. This one is a lot more in-depth, since it was done by the ADAC (Germany’s equivalent of AAA), which has been running a Tesla Model Y as part of its fleet since the fall of 2022.