Electric cars.

[JockyBrewer]

The datum of a cars value and level of wear and tear with ICE cars was always mileage...higher mileage cars were worth less and assumed to be less reliable and more likely to cause additional running costs, but for BEV's maybe mileage is a metric that has zero relevance or utility in assessing how good a car is and we need to look at something like charge cycles, or some ratio of slow charge cycles to fast charge cycles or something else to really understand the overall condition of a BEV.

This is a really good point.

ICE cars have lots of moving parts, so mileage matters. For a BEVs the relationship doesn't disappear as more mileage means more charge cycles which we know 'wears' the battery, but there's also other factors about age, temperature, speed of charge, and how long a car stays at very high or very low charge.

I fully expect a standard for battery 'State of Health' to be established at some point, with that being one of the metrics provided alongside mileage when selling a car.

It's like a lot of other things in this area where new ways of doing things will be found.