Clear and Improve Sunroof Drains A8 D3

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Front sunroof drain hole

Last raining season, my rear seats were wet on a heavy rain day. There was some water under the floor board also. Some in the trunk. The Audi A8 D3 sunroof drainage has been a problem with many owners. I did open them up and check the drainage rate and they’re quite slow, hence the interior over flow of water problem.

Water flow rate improved Rear Drain Out Rear Drain Hole Improvement Front sunroof drain hole

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