No issues until now .

Just getting ready for some winter maint. and i find fluid all over the right bottom plastics ... 270km now
suspect the transmission as it is low on fluid ..
where to start looking??

 

look up , gravity would bring the oil down so start probing around your transmission case and see where it's come from.

 

Does look a sort of ATF-dirty-red.

Probably best check the fluid level according to the instructions and jet-wash the engine & tranny area.

Drive around a bit.

Looks again.

Source of the leak will be easier to spot if it's all clean.