Thank You mfl,
2 months ago, coolant in my GTI was on minimum (it was serviced 4 months before that) toped it up (exactly between min and max) and 2 days ago it was again on min. (2 months 3500km and about 200ml of coolant) - no stains
"oil sweat" - what I assume is "oil sweat" (no stains in my garage) is noticeable on the part of induction system (black tube) attached to the Turbocharger Inlet - it is not dripping it is just oily - I understand GTI is different than 90 TSI - but that area is clean and dry on our 90TSI.