Originally Posted by dreamspeed
Wait, so the total number of M3s with rod bearing failures is ~30? Even if you triple that figure it's only ~0.0013% of the ~66k units sold?
The point of this exercise is to try and find out as many failures as we can because, even today, nobody outside BMW knows if this is even a problem.
SFP has cataloged 30 or so but a third of these are not relevant (other types of failures, etc) so the current estimates are lower, closer to 20.
As you point out, if the total failure number really is this small, it's pretty typical of most automakers and there is nothing special about this engine. But we don't know this yet.