that's also what I thought. I have a 2026 MK4 Jazz and while I was just washing the car I was wondering if the bodywork, the panels, doors and stuff were made out of some synthetic material. It feels like some kind of plastic material. Or maybe like tin cans they use for softdrinks/soda. But apparently it is very thin steel.
I noticed that some of the rubber around the rear window is already breaking off. I will try to get this fixed as part of the warranty. But will do this probably in March when I have my first mandatory maintenance.