I have recently brought a clio 1.4 petrol and sometimes it just refuses to start! I can't see that there are any triggers (cold/overheating) if i leave it for 10 mins or so it will then start. The engine turns over but then doesn't kick in. It doesn't happen that often but it's more irritating than anything else. I drove to the petrol station the other day, went into pay, came out and it wouldn't start (had to be pushed out the way)!