Looked at a 2004 996 with 72,000 km on it. The test drive resulted in the display the message 'Selector Lever Not Engaged'. This was after having driven the car about 10-15 mins and shortly having switched it into manual mode, run it through the gears and then put it back into Auto. There was NO indication of a tranny problem otherwise. Getting it back to the shop, fiddling around with the shifter got it to display the message one more time, but it went away quickly after moving the lever more.
I don't want to buy a car with a Tiptronic problem, and the matter is complicated by living in J