2 x e60 Msport 530d's. No issues on either - first one 116k kms 2006, second one 2009 LCI now on 192k kms
2 x e46 300i Individuals, No issues 2001 LCI manual 80k kms and second one 2002 LCI auto 300k kms (valve cover gasket only)
1 x e46 328i auto 1999. no issues 70k kms
1 x e39 528i 1998 - no issues 165k kms until engine was cleaned - blew the Ecu and electronics - so not a mechanical failure - more stupidity!
1 x e39 M5 2001 - no issues until clutch failure at 120k kms (slogging it out in 1st and 2nd gear traffic daily) repaired at a whopping cost at BMW, only to start failing again 3 weeks later!
2 x e46 320d's 1 manual, 1 auto - no issues other than the manual being written off by the then mrs :=):
Only issues have been after services at BMW (various dealers) for crappy workmanship related things (binding brakes, loose covers etc!!!!