The cupra when originally released (2000W) came with full leather, elec seats etc as standard, also on sale was the 20vt sport which still had climate, folding mirrors and cd changer but did without the leather elec seats, auto wipers and auto dipping rear view mirror.
Then sometime in 2001 they dropped the sport and sold the cupra at a cheaper price but with sport spec, so in effect they dropped the cupra and then rebadged the sport as a cupra, if you know what I'm saying!
So from 2001 onwards the cupra has cloth seats, no auto wipers and no auto dimming mirror, but the leather and elec seats were an optional extra for about £1200 ( can't buy one without the other).
As far as folding mirrors go think they should be standard on all, but a few do seem to not have them, maybe they are imports but not sure.
Don't think auto lights were available either but again I might be wrong.