Thank you guys for all inputs. That was Quick!
Yes, taxation in Denmark is quite the hefty algorithm.
Approx 150% on top of Car Price incl. VAT (25%) for a brand new car. That means a M3W is 6-700.000 kroner, or £75k.
When a car reaches 35 years - its hole different ballgame, so 1981 is currently that magic year.