This is not just winter. This is an
Audi winter
This is after pumping out 10 litres of water the other day when I discovered my A6 was raining on the inside after living under a tree for a month. At least its simple enough to strip everything out of this to get to the drains without having to remove the drivetrain or dashboard!
Its not just Audi though - this is characteristic German auto-industry arrogance just like their sealed for life gearboxes. A friend drives an assortment of BMWs and they all have water ingress issues too.
I was reading about oil starvation issues with Mercedes' AMG supercharged V8s the other day. So over-confident were they in their meticulous enineering, they didn't bother to fit an oil pressure warning system to the engine! Consequently the oil starvation is only discovered when it puts a rod through the block
All that being said, I'd rather drive a soggy German than a Japanese appliance