I think we only updated our navigation system once in our E60. Prior to that, I don't think I ever updated my nav system in my 04' MB. I don't think there are that many new roads/streets in the city we live in. LA is already running out of real estate.
2013 BMW X5 35i
Alpine White | Cinnamon Brown | M Sport
2013 BMW 550i
Titanium Silver | Black | M Sport