Since the X6 is manufactured in the United States, it falls under the Free Trade Agreement and therefore no additional duties are levied. Although no reprogramming is required, if you want the cruise control speed display in km/h then it will need a reflash.

A lot of foreigners buy in the US due to the substantially lower costs and higher standard equipment level. Folks from Germany will import US-spec BMWs to Germany; despite the transport, duties, and reprogramming costs, some folks still come out ahead.