Standard equipment, eg speedo error. These always read very optomistic.
Threads and threads of info about it, here on the Board.

Try Search Tab; it's your friend. 2 threads I pulled up in 5 seconds,
below.
GL,mD

http://www.xoutpost.com/x5-e53-forum/...edometer+error

http://www.xoutpost.com/x5-e53-forum/...ht=speedometer

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