I know the tranny issues have been well documented here with some talk of a supposed software upgrade. Did BMW actually make good on it? I have an 08 4.8i (May 08 build date) and the jerky tranny is very annoying - primarily during city driving. The car just lacks smooth starts and just seems constantlyl unsettled. The only time it seems to work correctly is when you gun it on a very long straightaway. Any info is appreciated. Thanks.

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08 BMW X5 4.8i - GONE after 6.5 yrs
Space Gray / Light Beige
Premium, Sport, 20's, Technology
SAT, Rear Climate,Heated