Welcome to the Forums and beautiful Daytona grey colour choice! 😁
I’ve not heard of water in the sills, as unless you have a sunroof, the water can channel down there but there’s usually a drain port.
From pictures I see you don’t have this feature so I’m going to break some potentially bad news here.
Please see this link to see whether it’s similar symptoms...
I can hear what sounds like water sloshing around in a container to the rear of the drivers seat. It only occurs under sharp breaking/accelaeration (basically enough of direction change to cause the liquid to move). My car is due in for some warranty work soon so will ask Audi to double check...www.audi-sport.net
So either faulty fuel tank or adblue tank empty... hopefully the latter!
THIS IS WHAT I HAVE FOUND ON AN OTHER FORUM
Did you ever get this fixed? what was the outcome?Hi again guys sorry but I only bought the car on Friday and had drove it all weekend but ,lovely driving car, washed it on Sunday night my wife took it to work on Monday morning as I got back into my van lol ,phoned my to say funny sloshing noise coming from it I thought she was talking through her hat came home took it for a spin and yes the noise when braking and accelerating like water rushing about phoned garage where I bought it from and they are taking it to Audi to sort it out have to leave it up tomorrow morning will let yous know what they say cheers Jonny