A year later and still no real worrying issues. The problems are small so far... had a tyre sensor become intermittent, and it seems that it's just the battery powering the valve assembly/pressure gauge is flat or close to it... not surprising as it's 11 years old now. Ordered and received 2x brand new ones from UK for not too bad a price. Now have to see an agent to get it programmed sometime... not urgent obviously.
An airbag light is the only small problem as comes on intermittently... have bought myself an Autel MD801 for code identification, so will have to work out how to use it. Seems simple... have identified (confirmed actually as suspected) at a private Renault garage (RennoJag in Auckland) that it's the pre-tensioner connection, so will have another go at it soon... not urgent again as its every 3 - 4 days and goes out. Might have a slightly old battery is another possibility.
Otherwise I still love driving it. It's also good on gas, as it recently did 35 MPG (fuel measured at fill up to fill up) on a not slow trip, Auckland and back. Around town is OK at 23-24 MPG.
Had fast wear on the front tyres, but have now gone back to Michelins and they seem to be wearing OK. Would like a towbar for it... but it's hard to get second hand and at a good price... my Reno 17 g thou has a towbar, and it gives it a bit of a purpose in life for those occasional trips to the tip.
Another report just in case anybody is looking...
Replaced front driver's door lock as the door light/sensor micro switch stopped working... easy to replace, but used a Haynes manual, which is kinda essential.
No issues with mechanicals - all going well.
Chinese coil packs are fine - no problems after 20 thousand Km.
Have done a bit of work on the factory stereo - it's a very capable unit - tried out a so called good Kenwood and it sounded very unmusical... boring to listen to, so went back to the original, but beefed it up a bit - bigger output IC capacitor installed - great improvement and easy to do. Better speakers in front (Pioneer duo cone), kept the original tweeters and a subwoofer installed using hi level convertor to speaker outputs. Sounds brilliant now. Adaptor for extra line level input from eBay installed as well. Can now use a iPod or use the Sony RCA out ten disc in the boot that randoms properly, unlike the Renault 6 disc (only randoms tracks on one disc at a time).
Still enjoying the car... have no thoughts on replacement, which is good.
Yes, someone's looking :) Thanks for the update. I did notice that with aftermarket stereos, even "good" ones, they tend to sound unreal, meaning not very balanced in musical quality. Many factory ones seem to actually sound better-balanced; often you just need to upgrade the speakers.
I think the big area of the Cabasse original head unit is the quality of the radio, plus nice bass and treble gain controls, and also the ease of use with the column controls. Somebody did a great job of getting it right the first time around.
The original speakers were OK, but the Pioneers (not expensive) are just that bit better all around.
The subwoofer I fitted was a Japanese import model that must have come in with a Japanese car. Isobarik type drivers with a passive driver as well.
What this means is tight tuneful fast articulate bass that really works well with the Cabasse unit.
Might look at a Megane estate manual next time around. Just got to find one.