VCDS for the win, About four hours after picking mine up I had it turned off for the very reason Sn00ten mentioned. Don't fancy cooking the oil in the turbo bearings (although I suspect there has to be an electric oil pump in there somewhere, surely)....
Start stop function doesn’t affect Turbocharger oil
The electric coolant pump activates to keep coolant running in the same way it does when you switch off at a journeys end.
The RS3 Daza control unit uses a combination of this electric pump and cooling fans to prevent turbo damage from over heating.
This engine has very sophisticated thermal management.
I’ve circled the pump below
Every day is a school day. Nice one T800, great info, thanks - I'll not worry about letting the car idle on the drive after a spirited drive home as much now, although I probably will lol