Current batteries aren’t very good, but that battery degradation doesn’t look bad at all IMO. He lost 24 miles of range over 44,000 miles. From what I can tell he will have 194 miles of range when his car has 183k on the clock and 94 miles of range at 366k, which is still more then almost every 2016 and older EV.
I found that very interesting thanks for sharing.