[feuer]

Originally Posted by ab987

I don't think usage is the only factor here. Age and environment certainly play a role, a car that is constantly heat-cycled daily for 150k miles, particularly in salty environments, will probably have rubber polymers like CSBs and giubos harden, weaken, and deteriorate in general. It's not to say they will fail (like injectors for example) but it does open the door for those kinds of failures. My point is I have personally seen a nonzero amount of these fail, and threads do pop up from time to time. In fact, two in the last few weeks in this subforum alone

I agree but that doesn't equal to common failure like let's say coolant pump, injectors and high pressure fuel pump on n54, oil leaks, coolant leaks, waste gate rattle on n54, early models steering column lock, turbos and EGR on diesel engines and etc. All these have had happened to most e90, not only to some sporadically.

[ab987]

Originally Posted by feuer

I agree but that doesn't equal to common failure like let's say coolant pump, injectors and high pressure fuel pump on n54, oil leaks, coolant leaks, waste gate rattle on n54, early models steering column lock, turbos and EGR on diesel engines and etc. All these have had happened to most e90, not only to some sporadically.

I agree 100% with you, it is nowhere near as prevalent as water pump failures, injectors, HPFP, or anything you listed. Like I said in my first or second post, it's definitely not common, but it is a rare failure point that does happen more than other platforms