2003 X5 Front subframe assembly
 

Take a look at my BMW subframe horror movie. Check yours!!
https://video.citnow.com/vtrLkhQk_sZ

Well.. On the up-side, your engine doesn't seem to leak much oil.
My X has this nifty automatic continuous rust protection system. -Some might just call it engine oil leaks. But it seems to keep the rust away. :D

Do you by any chance live by the sea? Or in a county that has a way too high budget for slinging tons of salt on the roads during wintertime?

I have to say that this is the absolute worst condition i have ever seen any X's underbelly be in. :yikes:

Yeah that vehicle has been through some salt baths and probably never got any underside pressure washing to remove the corrosive elements. Its what happens when they get driven through rough environments. I pressure wash the underside of my vehicle each year. So no problem here. It appears that you have a number of maintenance items to address at the front underbelly of the vehicle. Good news is that once fixed it will ride and handle like a new car.

Im so glad we don't have rust problems like that here

Check out this thread - it ended well.

http://www.xoutpost.com/bmw-sav-foru...sub-frame.html