It is really annoying that the aftermarket must solve an OEM issue, especially on this type of car. It is also annoying that a
"premium" Mann German made filter experienced this type of failure. Unacceptable really.
Not sure, if the filter has been redesigned or if mann is even still the OEM provider but I stumbled upon some new photos of the filter and there's no sign of Mann manufacturing on it, not sure if the internals are still the same or not. I wouldn't be able to tell.