Mazda 626 1.8 petrol saloon...

My boot(trunk) lid would not open, by key or otherwise.
Climbing into the boot through the back seat (luckily not locked), i was able to remove the trim and open the lid.

The lock cylinder has a piece broken off - where the rod bears on it to open and the rod was just hanging loose - disconnected.

Question: Why is a quality car is the lock cylinder body so frail ..........

Does the complete thing need replacing ? Is it possible to recover the key cylinder , so that, at least, I do not have to have a different key ?

Denis