I must not have a "Friday Car" because (knock on wood) I really have not had any issues with my car other than an HPFP, an oil filter housing gasket and a Vanos solenoid -- I think that's a pretty decent track record for any ~5 year old car, especially one that has been modded from early in its life.
There have been a couple of little minor annoyances that I had fixed under warranty, but nothing that would have impaired the drivability or enjoyability of the car had I not had them addressed.
I do all maintenance on my car much earlier than BMW's suggested intervals, and generally try to take good care of my car, so maybe that has helped.
2008 E90 335i // Black Everything // photos
COBB tuned / QTP e-cutouts / Helix FMIC / cp-e DCI / AWE BOVs / Black M6 wheels + Toyo Proxes
(and yes, I am a girl)