W204 rear light holes

Jack_M

Senior Member
Joined
Mar 12, 2024
Messages
87
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Location
East Sussex, England
Your Mercedes
W204 2009 C350 CDI SPORT
Why do the W204 rear lights have holes in them?

I've heard a few reasons, for aerodynamics, for ventilation/moisture control, to keep the lights clean using a wall of air.

Does anyone know the true reason for the holes?
 
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