My 53 172 had the following issues (6k on clock when I bought it)
Heavy Steering (fixed under waranty - Just a sensor)
Headlamp washer ball fallen out (Cant be bothered to fix it cause it sprays pedestrians
)
Interior ambient air conditioning sensor buzzed like mad (fixed warranty)
Oil leak from rocker cover (fixed under warranty)
Knock form engine/Top Mount (being fixed under warranty Tues)
Rattles from passenger side (fixed by me)
Rattles from dash (fixed by me)
Appart from that it is a seriously trick and quick car which gives me about 37mpg. The problems havent been major issues and I wouldnt change it for anthing less then a scooby STI or Civic Type R. One thing worth noting is the speed and quality of the warranty fixed will be heavily dependent on the renault dealership local to you.