A Porsche buddy has a 928 and replaces his $1100 MAS as a maintenance item it breaks so often.
I understand the high-failure MAS are on the M104/M112/M113 models, with lower failure rates on other models, but still there.
BTW, yes, lots of car makes have this problem. But, the one our Mazda lasted 220K...
1998 C230 "Black Betty"