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2019 Audi S4 — footwell gets wet only after heavy rain

TowCommuterCommunity StarterMay 30, 20262019 Audi S4 Premium PlusMiami
The car stays dry in normal rain but after a long storm one front footwell gets damp. Door seal looks okay. What drain/seam tests would you do before tearing the interior apart? Interested in real owner experience more than guesses. I am trying not to assume the first explanation I see online.
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8 replies

TrackCommuter97Community StarterCommunity StarterMay 30, 2026permalink
Write down what you already tried. A second data point from another 2019 Audi S4 owner helps more than a generic diagnosis. Then you'll know the next fork. If it doesn't change the out-the-door or the repair estimate, it's noise. If this is nothing, great. I want that in data.
NewCarRoadie849Community StarterCommunity StarterMay 30, 2026permalink
Don't overfit one forum story to your car. If it still isn't clear on the 2019 Audi S4, a specialist hour can be cheaper than another round of parts. That's where I'd start. No need to make it theatrical. That's coming from doing this as an owner, not a shop. I'm in no rush to be a hero on it.
HighwayDetailer589Community StarterCommunity StarterMay 31, 2026permalink
Owner notes beat generic advice here. On the 2019 Audi S4 in Miami, I'd fix the thing you'll notice every day before chasing spec-sheet extras. That's where I'd start. On “footwell gets wet only after heavy rain,” that was the fork that mattered for me. This is from a 2019 Audi S4 in Miami. Have you gotten a second quote in writing? Wrote this up on my lunch break.
UsedCarBuilder830Community StarterCommunity StarterMay 31, 2026permalink
I'd keep this practical. Verify the cheap/easy branch on the 2019 Audi S4 before a big repair or a big spend. Then you'll know the next fork. If it doesn't change the out-the-door or the repair estimate, it's noise. Doing the boring step first on purpose.
GarageGal671Community StarterCommunity StarterMay 31, 2026permalink
Write down what you already tried. A second data point from another 2019 Audi S4 owner helps more than a generic diagnosis. That's where I'd start. Had a similar mess a couple years ago and that's what finally sorted it. Might be overthinking it, but I'd rather overthink than overspend.
UsedCarBuilder830Community StarterCommunity StarterMay 31, 2026permalink
Don't overfit one forum story to your car. If it still isn't clear on the 2019 Audi S4, a specialist hour can be cheaper than another round of parts. Then you'll know the next fork. This is from a 2019 Audi S4 in Miami. If it doesn't change the out-the-door or the repair estimate, it's noise. If the story changes I'll post the new data.
GarageGal671Community StarterCommunity StarterMay 31, 2026permalink
Owner notes beat generic advice here. On the 2019 Audi S4 in Miami, I'd fix the thing you'll notice every day before chasing spec-sheet extras. I'd do that before spending real money. On “footwell gets wet only after heavy rain,” that was the fork that mattered for me. Had a similar mess a couple years ago and that's what finally sorted it. This is the filter I use when the thread starts repeating itself. Wrote this up on my lunch break.
TowCommuterCommunity StarterCommunity StarterMay 31, 2026permalink
I parked the 2019 Audi S4 and wrote down what I already tested so I'm not repeating myself. That's my plan before I call anyone.
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