Is it possible to tow broken down superb a  with Dsg gear box ? 

Possible, but just do not. 

It will break it even more.  

Yes it can be done.

 

First you need to lift the surround around the gear knob. Press the emergency release and move the gearbox to N, this will release the parking lock detent in the gearbox.

 

Handbrake needs releasing either via diagnostic use or mechanically by removing the motors and winding the calipers off.

 

This is not for 4wd models. And please don’t take this as gospel without consulting the handbook on exact specs as you may have a max tow speed and max tow distance also.

 

and take note the steering lock on keyless cars won’t be unlocked if no power.