EV car running costs tripled you may ask? RUC? Or be dammed about the environment.

David from Glenfield

I bought a pure EV Ioniq 2021 car last year. Lots of reasons environment etc. mainly running costs. I knew RUC ((Road users charges)) were coming. But when they confirmed the amount, I was shocked.
Currently my EV cost to run approx. $3 /100k plus RUC of $7.60 it is about to be $10.60
My wifes pure petrol car approximately similar size, cost to run approximately $13.75/100km (5 liters) also. broken down though petrol excise duty (petrol equivalent of RUC) @0.70c per l = $3.50 that is a huge increase of RUC over 100% for EV, WHY?
I do believe in user pays but begs the question why double because I pay less for the fuel, being electric? We are supposed to be green sustainable country and yet those like me, are penalized for doing the right thing. In fact, if I had a car double the weight which would cause more damage to the roads it's the same price not more for the expensive RUC, So unjust and unfair.
If there was a stepped for small EV, medium EV and heavy EV, and huge 3-3.5 tones, that would be fair. RUC charges all pure EV and diesel up to 3.5 Tonne are all priced the same.
Only way to escape it if I had a super light small EV car and I would not have to pay at all. Anyone selling a 999kgs or less EV? Maybe move to hybrid non pluggable petrol car and have smaller running cost and be dammed about the environment?
I edited as my run to Hamilton there and back was $6 which is 200km...