TJ – your argument has many holes.
Have you actually looked at a mk1 and a mk6 golf side by side. They might have the same name but they are fundamentally differently sized cars. Your argument might stand more ground if you were to focus of folks wanting a bigger car to do the same job from 20yrs ago. Looking at like for like performance models and I wouldn’t be surprised if the mk1 had higher emissions than the modern day counterpart despite the weight so it ain’t all bad.
Better comparison :-
my clio 197 weighs 1240kg with all the extras
clio 197 cup version is exactly the same car which has most of the extras stripped out so out go most of the airbags, air con, keyless entry, nice heavy duty plastics for dashboard, wheel jack, and in goes fancy lightweight seats. – 1204kg
36kg difference.
Then look at the Clio 182 cup – the previous generation of racy Clio with exactly the same “extras” as the 197 cup version above, exactly the same engine and virtually identical brakes but the previous chassis and shell which was mainly changed for the 197 to meet new safety expectations and weighted 1021kg. Bear in mind these are cars trying to have the best power/weight ratio they can – they would not have increased the weight unless they really had to.
So the nice to haves on the 197 made 36kg difference whilst the safety improvements between the 182 and 197 cup made 183kg difference.