Good day, my 2008 octavia 1.9 tdi is making a clunking noise, suspect dsg gearbox because only happens when in gear at idle and off throttle, sometimes when accelerating but not always. No blinking lights or warnings in dashboar so far. Any ideas?, I`m taking it to the dealer tomorrow, but I want to have an idea of what I`m in for. Thanks for your insight.

Might be the clutch assembly (called multiclutch in Skoda jargon). How much has the car done?