Having said that not all Plastic bodied cars are bad ( most Touring Cars and Lotus's have plastic bodies ), but there's plastic and then there's plastic. If you prang a plastic wing replacement is quite easy - no need to get a panel beater. No corrosion. Yes the gel coat will chip, and in hot...
Basically they are owned by Renault, and are essentially based on Renault platforms. Therefore they share all the Renault faults (and advantages). Renaults also have flimsy bodywork too....... ( I can recall hiring a Renault Megane Cabriolet and pressing the boot lid which flexed like plastic...