My wife has a 2004 1.9 dci (diesel) Initiale with 165k miles so it has all the toys which is good and bad. We did have a 1996 mk1 which was great right up to 206k when it caught fire. Electrical fault. We have had this one since 2008. It's OK but nowhere near as reliable or comfortable as my mig. The 6 speed gearbox blew up about 6 months ago. AC failed yonks ago, heated seats short the battery if they are switched on, tyre air pressure sensors are way too sensitive whihc casues loads of irritation because of the way is tells you by half filling the satnav screen, alloy wheels are made of cheese, sunroof is jammed closed because the roof insulation is curling off which is also causing headlining to sag, cd player has packed up, radio is picking up interference when the heated rear window is switched on, it's noisey and it doesn't handle well at all.
18k oil change intervals sounded wrong to me so I change it at 9k.
It still runs OK and returns average 37mpg around town and 46mpg on a run but it is starting to use a little oil now.
There is a Renault website where you can post your questions for them never to be answered. The car might look OK but it's not a loved car at all. I have vowed never to buy another Renault after the expereince we had with this one.