Absolutely, old German cars have plastics that are very fragile. Our 1999 Lexus has interior plastics that feel and look brand new, my E46, E90 and my XF have plastics that start to crack when you look at them too hard.

You have to be very gentle when you remove and reinstall interior panels on vehicles like these. EBay is your friend, because you are likely going to have search for replacement XF/SLK parts to replace the ones you just broke.

I also like to reinforce parts with fiberglass fiber & sheeting resin from the back side, mainly the weak tabs and connectors you can't see from the outside.