B5.5 TDI passats are both amazing and bad at the se time.
They got a nice upgraded motor vs the other tdi's.
Unfortunately, with that motor came balance shaft issues that are akin to a time bomb.
Those years would also be the PD motors which can have can wear issues if not maintained properly.
And of course the always neglected auto tranny.
If you want a Huber reliable Tdi her a pre 03 manual.