you need to look into some of the ev’s made in the last few years, i doubt even the worst offender could get a battery to sub 90% battery life in 4 years

If you buy a 2nd hand car that is 4 years old and your battery is ducked after 3

that’s 7 year old battery, most have a warranty of 160,000km / 8 years these days

i think the very first gen ev’s / nissan leafs with crappy passive cooling and smart phone batteries have planted the idea that batteries are a very delicate thing that needs constant maintenance, most 5 year old ev’s will have 95%+ battery health with another 10 years of life left