Ali Express.
I am in Texas, and I was quite surprised to find a build-up of water in my charging port after moderate rain. I park in a garage almost all the time, so any water accumulation is from driving in rain. I will look into some kind of seal. It's disappointing that Mini did not incorporate a seal in that area.
As you probably saw, @SpeedyRS sealed his charging port very well. It appears MINI/BMW's engineers threw up their hands and conceded the battle against water getting past the cosmetic door. They designed the charging port covers to keep water out of the charging ports themselves.
If you look at the photo @SpeedyRS provided, the water can collect below the Level 3 charging port--there is no drain hole.
Laziness? Remember the SE is a repurposed ICE model, which doesn't have anything fancy behind the fuel port door. It is surprising there's not even a drain hole, though.
Previous generation MINIs only had the cap. With the current generation there's a metal door in the body just like the SE, but then a fuel cap that creates a seal on the filler tube. I'm guessing there's a "drain hole" in the sense the filler tube isn't sealed to the body. I have a first generation Clubman with the chrome cap only, but I can't check it for drainage. I never remember water pooling inside the fuel compartment.
Hah, the previous generation design fooled me. It is indeed a chrome "cap", but it's really a lid that goes over the actual fuel cap. There's not much space for water to collect, and it doesn't seem sealed like the SE's interior compartment is.
You must be right. I just went out in the rain, unplugged my charging cable, and didn't find any water pooled in the bottom of the charging port area.
My charge port filled with snow this winter when I charged at a public charger during a snow storm. I brushed out much of it with my hand, but just ignored what was left because it didn't interfere with charging. The snow sat inside the port for a few weeks until it got warm enough to melt. And then it was completely dry.
