vw bora auto slips in top gear ? - Ruperts Trooper
Not all modern autoboxes have a torque converter lock-up clutch - if it doesn't have one then the torque converter will slip continuously, just like old-fashioned autoboxes.
vw bora auto slips in top gear ? - Armitage Shanks {p}
Falkirk Bairn is on the money there - is the fluid dark ie burnt/overheated and BTW has the car got a towing hitch? If it has there are good odds that the box has suffered from some ill considered towing activity!