Our son is currently the primary driver of our Škoda Enyaq. To keep his energy consumption in check without having to turn every single trip into a debate (I personally stick to my bicycle here in Münster), we struck a deal: he pays a set fee for every percentage point of battery drained.
Now, you could track that manually. Or, you could just whip up a native iOS app that pulls battery data directly via HomeAssistant’s Škoda plugin.
The only downside is that it requires the HomeAssistant Cloud. On the flip side, the app works with other EVs as well. All in all, building this app took barely a week.