I know everyone thinks OcUK Motors is nasty and hates anything that isn't a Porsche or something but it's not the case, most of the dislike for things has solid basis. The Megane is a particularly interesting case in point.
These are not THAT old yet and they don't rust. So you'd expect to see lots of them around, right? They did sell loads. Yet when did you last see one? This prompted me to go looking. There are many variants of Megane so it's difficult to pick the right variant but I went for the DCI 120. Introduced in 2003 with the rest of the Megane II range, the figures make interesting reading:
https://www.howmanyleft.co.uk/vehicle/renault_megane_dynamique_dci_120
As you can see, the numbers on the road are sharply declining. Why? They are not rusting away. Some will be accident damaged of course as with any cars but I believe this is a particularly abnormal rate of decline for what is a fairly modern car.
By 2008 there were 12,000 in this trim level alone yet now less than HALF of them are still on the road. Most of these cars are under 10 years old?!
My guess? People are scrapping them after finding seriously expensive faults developing.
Take a look at this similar car introduced around the same time and notice how most of them are still on the road:
Focus C-Max:
https://www.howmanyleft.co.uk/vehicle/ford_focus_c-max_zetec
You can see from New Registrations that most of these are 2003-2005ish cars, similar age to the Megane. Yet most of them live, yet the majority of Meganes are no longer on the road.
IMHO these cars are a liability. Asking how did you after the event seems pointless - its yours now - but next time do some homework before buying a car and hopefully you'll get lucky with this one.
These are bad cars, bad buys and no amount of people saying how horrid OcUK Motors is can change that I'm afraid.