I've done it.
I have an 11yo Saab 9-3 with just under 200k on it and things are starting to go wrong and cost money.
Bought a Seat Ibiza 1.4SC Sport, haggling another £500 off so paid £8k.
It gets built next week and I'll pick it up start of September when I get back from my jollies.
If, like me, you' are trading in an old "2nd car" for a cheap, small and economical "2nd car" then it's a good deal.