Upgrade the audio, it is shockingly bad. Normally, I don't care about the speakers as I can't really tell the difference but the first thing I noticed about my F20 were the speakers as they were beyond terrible.
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BMW E60 MY2008 (LCI) 2007-2013
BMW F10 MY2013 2013-2017
BMW F20 MY2013 2013-2016
BMW F30 MY2014 2014-2015
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