No not those, they are your aircon condensate drains. The pipe can be pulled out and then also the orange grommet, so you can clean it out in the kitchen sink.
The centre drains you'll have to access from under the bonnet, remove the plastic cover around the brake fluid reservoir and you'll have to go fishing under the plenum chamber. Have a look with a torch, it should be bone dry down there.
I found that was where the sloshing was coming from on mine, all the other drains were clear and my piece of compressed cardboard that covers the relays i replaced with marine ply as it nearly twice the thickness it should have been, swollen with water.
Sunroof drains i found a length of strimmer line work a treat especially the rear two.
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1996 A8 4.2 QS. Bose, Solar roof, um...um... rally sport towbar. Now gone to a new home as the Traders 8.
Bright yellow bus o love.
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