With electric there's much less servicing costs - no oil changes, clutches,
ATF changes, exhausts, DPFs, much reduced brake wear so fewer pad changes.
It's basically change the pollen filter and that's it. There are the usual
suspension repairs (CV joints etc) and occasional brake fluid changes like
other cars.
When the winter range of an EV drops due to an ageing battery, what are
the comparative costs of battery replacement and ICE servicing over that
same period? After all, the value of the EV will plummet due to
battery-replacement costs, so to keep its value a new battery will be
required.
That's something that's hard to answer. The EVs that are ~10 years old now
are first generation vehicles with first generation flaws. It varies a lot
between manufacturers based on their designs (Nissan has awful longevity,
Tesla is pretty good). If you buy a new EV today you're getting one with 10
years more improvement in battery longevity.
While there are swaps for Leaf batteries, I would expect that any EV you buy
new today won't suffer sufficient degradation to make it a problem.
https://electrek.co/2020/06/06/tesla-battery-degradation-replacement/#jp-carousel-65298
shows about 90% capacity for Tesla model S and X out to 250,000km.
That said, I wouldn't buy an EV without any excess range for the journeys
you need to do. If your EV has some range left over then you can handle
some loss of capacity.
The alternative is simply to sell your EV on as a fully functional but lower
range vehicle. Maybe that will suit somebody who only wants it for shopping
trips rather than motorway runs. There is no reason to scrap it when it
still works for some people. You may take a hit in value, but at that age
the vehicle is fully depreciated and only being sold on condition anyway.
Theo