We live in a harsh, hot and high UV environment, so whatever car manufacturers sell down under must be as displayed and must be robust and long lasting as seen by ACL. Being that ZB ain’t old by any measure and that the paint is failing means it doesn’t meet ACL Paint failure in such a short time is clearly unacceptable.
The problem is in part twofold and depends on whether the paint is a factor paint failure or a respray paint failure and if it’s a respray failure who did the respray.
If you are the first owner, then you know the cars history and thus if the car has ever been resprayed y you since it’s always been in your possession. But it may have been restated by the importer or the selling dealer before delivery… In such cases, finding out who did the respray isn’t relevant as the selling dealer is on the hook in this case.
If you’re a second or third owner, you'd need a paint expert to identify whether it has been resprayed and if so then chase up the previous owners to determine who may have resprayed it… Was it the previous owners insurance company, the dearer before or the manufacturer before first delivery. This is where it gets complex cause the last owners insurance “lifetime repair warranty“ doesn’t transfers to the new owner and ACL wouldn’t apply if you bought it second hand privately.
In any case, Holden seems to have taken ownership of the problem by virtue of doing some paint repairs. As such I’d simply document every contact you’ve had/will have on the subject as likely you’ll end up at QCAT.
I’d suggest you ring up Fair Trading and discuss this issue with them as the6 should be able to clarify your rights and the sellers responsibilities under ACL.
Don't accept a touch up as these problems won’t really go away. I’d go to the best independent paint workshop and have a chat to them on what the best solution is for you, the owner…
In my view, once paint layers start to delaminate, be it the undercoat, base coat or clear coat, the only real solution is to remove the all the paint layers back to metal followed by a full quality respray. Kia did that in 2018 on all the yellow Kia Stingers. Toyota will likely be doing this on many many cars…
A quick search doesn’t show Holden ZB/Opel Insignia as having any systemic paint failures so that would indicate likely shipping damage and repair as being the culprit. So it sounds like it‘s a one off which means Holden’s accountants won’t be pounded in the same way as Toyota‘s will be. Or maybe their accountants know something we don’t and are playing hardball
Whatever the situation, the more prepared you are, the higher the chance the outcome will be to your benefit, so talk to FT.