You do not understand the problem the Federal and several state governments have with “high-mileage” vehicles in significant numbers - the collection of fuel taxes goes WAY down, and there is no simple way for them to substitute that shortfall. Besides, they don’t want people to be having too much fun merely by racking up leisure-driving miles.
I looked into getting a TDI VW (the American version), but when I worked out the increased maintenance costs vs the fuel savings it was a wash. That was several years ago and fuel prices were much lower then. Would be curious to see a Consumer Reports analysis given current gas prices.
We are still at 4 bucks a gallon here in WA state.