Dartmouth

Really surprised I haven't seen this addressed. The wind is so loud on the Panamera with the sunroof open traveling faster than a crawl. Porsche did a lousy job with that. Is there a wind deflector that can be added?

amelen

I had one on my 2017 and had no issues.

Stringbag

There should be a wind deflector that pops up when the roof is opened.
Mine is quiet at reasonable speeds.
Are you sure yours isn’t just stuck?