Its been a good 2-3mpg lower since the 2nd recall in my case. I also have an '12 X5d and it gets its advertised mpg and probably had the updated changes including no dipstick since I have in the 335d.
2012 BMW X5 35d
2011 BMW 335d MSport [Pilot Supersports / no runcraps]
2008 BMW E93 M3
Last edited by mt3ch; 10-27-2012 at 09:53 AM.