What happens to EV after 8 years?

Can you explain what typically occurs to the value or condition of an electric vehicle (EV) after it has been in use for eight years? Are there any common issues or factors that typically impact the longevity and performance of EVs over this period? Additionally, what steps can be taken to maintain and prolong the lifespan of an EV, and what impact does this have on its overall value and appeal to potential buyers?