335d are all auto's.

Wife isn't fond of the 5 series.

 

Mmmm.. I see.
My wife hates Autos, hence me being very lucky to find a manual 335i E92.
Most are also AT, its a great system and arguably quicker but Karen likes to 'drive' our cars.

With the Big D, look under the front for signs of oil.
The main issue I read about is intercoolers filling with oil, maybe a PCV issue there.
There is a recall and modified boost hose job out from BMW too..

Have a nose on E90 Forums- theres a small UK bit too:
http://www.e90post.com/forums/forumdisplay.php?f=22

HTH