Driver Side Carpet Getting Wet – Audi S3 2017 RHD

[J_190]

Hi all,

I own a 2017 Audi S3 (right-hand drive) and have noticed that the driver-side carpet is getting wet. The water begins accumulating in the top left corner (see attached photo) beneath the plastic footrest.

Here’s what I’ve observed so far:

• I dried out the carpet completely and left the car unused for two weeks while on holiday. During this time, the carpet remained dry, which makes me think it’s not due to rain or an external leak.
• However, since resuming use of the car, the carpet has started getting wet again, which points to something internal causing the issue.

I suspect it might be related to the air conditioning drainage pipe being blocked or malfunctioning.

• Does anyone have experience diagnosing or fixing a blocked AC drain on the Audi S3?
• If so, where exactly is the drain located in the 2017 model (RHD), and how can I check or clear it?

For additional context:

• The water feels and smells neutral (not like coolant).
• The coolant level in my car has stayed consistent.
• I’ve ruled out rainwater leaks as this issue persists regardless of weather, and the windshield has been replaced twice with no effect.
• I DO NOT have a sun-roof.

Any advice or guidance would be much appreciated. Thanks in advance!