A quick googling shows some sources claiming EVs are in general designed with a planned service life or around 10 years.
That's basically the same planned service life for ICE cars, which some sources claim it tends to be 12 years or 200k miles.
One source suggests battery capacity in EVs drop less than 2% per year on average.
These numbers seem to contradict you, but you show your data so that we can look into it.
What slice of my mortality pie was radon before and after spending $5000? Could I spend $5000 to cut a bigger slice out of it in another way, like eating better or hiring a grizzly bear to make me exercise more often?
I think action is better than decision paralysis, but I wish I could make much more informed decisions.
What's the process, usually, adding some special ventilation system to the house?