HI Bertieboy74
I have a 2010 superb estate. I have had the same issue with my car since 2019 - losing coolant via the exhaust, no overheating (engine temp ok), No obvious leaks, Engine oil looks normal, no milky residue etc, Driving slightly sluggish,
Since it first happened it has had is had had 5 fixes, all by skoda garages, each fix cures the symptoms.
2019 - pressure tested - no leaks. EGR cooler replaced
2020 (10 months later) - same issue. - EGR cooler replaced under parts warranty
2021 (approx 4 months later) - same issue - cylinder head gasket replaced and head skimmed
2021 (only weeks later) - same issue - EGR cooler replaced - no other issues detected
2021 (weeks later) - same issue - small impellor water pump found to be seized so replaced
01/06/22 - same issue (AGAIN). However, this time noticed drivers front wing VERY HOT but cooled quickly when engine switched off
Any ideas?