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Old 01-14-2013, 12:42 PM
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tturedraider tturedraider is offline
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Originally Posted by Zeichen311 View Post
Closed does not necessarily mean non-functional. At least one of the BMW hybrid concepts (the Vision IIRC) had active grille vanes that closed for aerodynamic efficiency when cooling airflow was not needed. Perhaps that technology has carried over to the 4 Series?
Current production model 5ers and 7ers have active vanes. I would imagine the 6er does, too.

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