Hi there and welcome.
TBH this is by no means an isolated occurence, when I worked as a customer services manager for Ford, I remember seeing dealerships performing complete resprays on cars which had spent months in Vehicle Holding Compounds covered in bird droppings. Then, when I started working for myself - being requested by a garage to repaint a damaged door handle on a brand-new car, being collected by the customer the following day. So it does happen.
Cold comfort to you, as you are left 'holding the baby', so to speak.
Repairs can be allowed on a 'new' car (by the manufacturer or his representative), and the repair should carry the remainder of the warranty.
I would definitely contact
Renault Customer Services
, for the following reasons;
- you are most concerned about the repair standard carried out on your car & how this will develop over time
- there may be a history of such defective repairs performed by this 'extinct' garage
I would presume (since the car has a full service history) that the annual inspections have been carried out & nothing noted, until you spotted the rust? This must mean that Renault's stance will be that the repair has occured in the intervening period since the last service.
I would ask
if you could comission an independent inspection of the paint & rust damage to determine how long the corrosion has been present - as long as that gives a date early into the car's life, it should mean that the repair was done outside your knowledge, or the annual inspections have not been performed with any more care than a cursory glance.
I would also contact your local Trading Standards Office - again, there may be a history of dodgy repairs. Its all about gathering evidence to add to your claim - the more evidence you gather - the less you may have to pay.
Also consider contacting Which? & What Car? magazine, as sometimes even just their presence can add significant pressure for a manufacturer to capitulate.
HTH and please keep us posted.