I think I underestimated it as my car holds 70 litres and I usually fill up around 50-60 litres at a time. It costs between €2 and €2,20 a litre. So a full tank is over €140 cheapest.. around 70% of that is a combination of fuel and sales taxes.
My car is diesel, diesel is now more than petrol at the pump.
You might be grateful to have diesel someday, since it's more compatible with "alternative" fuels, which might be the only thing affordable some day. :-)
There is already a huge shortage of affordable cars here, there are some who will spend a fortune on an EV on credit, but they are a disaster after a few years. It reminds me of building a car without an engine, absolute insanity.