Unfortunately you probably wouldn't have a case and they can argue that they are not covered under the warranty. The best you can hope for is a goodwill gesture from MB, contact customer services and see what they say.
I assume you are in the UK, helps if you add your location to your profile as advice such as this is market specific.
2017 GLC AMG43 premium plus, night pack, leather, intel lights, 360 camera, side steps. = sadly gone
Now GLE450 Premium plus, Selenite, Black/White Nappa leather, Tech plus pack, Driving assistance pack, Tow pack, Off road pack, 22 inch wheels.