Vehicle tax in the Netherlands is already weight-based. This is why the tax rate for EVs is higher than gas cars. The thing is that if you live in Hilversum and are able to import a car from the US, you don't mind the higher tax to begin with

"The thing is that if you live in Hilversum and are able to import a car from the US, you don't mind the higher tax to begin with"

That can be fixed. Starting with removing business tax exemptions for such cars.

This is why they’re registered as business vehicles. Also the roads aren’t tolled, oddly.

No tax I've seen is anywhere remotely close to following "fourth power law" on axle weight[]. And especially so for gas taxes, as the gas/diesel cost tends to be closer to linear with weight.

Usually what happens is smaller cars subsidize everyone else due to paying a disproportionate tax vs axle weight^~(2-4 depending on fatigue pathway). Depending on tax structure possibly pedestrians/cyclists too but they are usually parasitic on tax basis.

[] https://en.wikipedia.org/wiki/Fourth_power_law