You got a real bargain! I thought I did well at £31.5k! As Damo H says, "if you are pleased with the car, then other things aren't important.
I have carefully run the engine in for 4,000 miles.... the mpg is improving, which indicates to me that the engine 9and other bits) are loosening up. I also feel that the engine is producing more power. I know engines come pre-run in nowadays, but I still believe in letting them bed in over a longer period of time.
Anyway, I am still over the moon with mine... I have had 4 Porsche 911's and this is quicker than any of them! (And it wont try to kill my like my last one did.)
The other thing I like is that the Cupra R ST is a bit of an unsung hero.... nobody quite realises what it is. It gets more attention than anything else I have driven (except, maybe, a Golf VR6 that I had, just after they were launched - I had one of the first in the UK.)
So, enjoy! I will keep mine for a few years..... why? ...... Because there aren't many vehicles that do all the things the ST does at a sensible price.