Frankly I dont know what to think...
I had a 2010 with every emissions issue- one of the first ones on which BMW 'learned' all the SCR/DEF 'fixes'...and I lemoned it:
http://www.xoutpost.com/846433-post20.html
Then bought a 2012 that has been flawless for 55k.
Just luck? Short term fixes in place, but long term storms gathering?? Hmmm...
But one wonders, with posts like this- will we see a broad series of failures post 100k?
I dont mind putting 5k, 10k or more in a car to go from 100 to 200k. Just awfully hard to pony up a pile right at the beginning. (ie 107k)
I also suspect that as DIYers learn more, the most economical repair methods will be discovered. (Im relying on lpcapital to pave the way!)