If you buy a Matiz then i might have to visit you in the small hours and stick a LARGE bat up yer nightie!
The worst car i've ever bought was a little (supposedly reliable) Daihatsu YRV (basically a Toyota Yaris with a different body). It was a 01 51 plate, had 60k miles on it and a full history. I managed to keep it 3 months (mainly due to 2 1/2 months of that it was in and out of the garage - prior to that it took 2 weeks to get used to it!!!!). I paid £2300 for the car, spent £1000 on it and ended up driving to my local dealers and parting with "the shed" as it became known and £150 for a 104k mile X plate Marea Weekend 105JTD and i consider that to be the best £150 i've ever spent on a car!!!
I know that works out at about £3500 for 8 year old car but hell, even needing a few hundred quid spent on it it's still soooooooooooooooooooooo much more of a car than the crappy little Eastern pile of poo!
Don't do it, don't by a cheap, nasty, horrid, abomination of a car!
As for the Pug, not that bad i guess. Far, far, far better in T/D or even better still in HDi guise. I always found they had a very stiff clutch but other than that they drive ok. watch the suspension, steering rack, rear shocks and engine mounts. Otherwise they are, in my opinion, better made than the 307/308 (which have electrics sponsored by FIAT!).
Best of all, by a Brava/Bravo/Punto and enjoy your car!