I was considering buying one of these cars until I read in the Parkers Buying Guide forum that this engine has a valve that goes faulty or blocks. The symptoms are loss of power & black smoke. The reason I didn't buy one is that this can lead to the engine blowing up!! I would suggest getting it to your Renault dealer a.s.a.p & swallowing the cost.
Incidentally I bought a Mondeo TDCI instead; utterly reliable & totally brilliant.
Roger
December 2006