I just bought a 1999 S80 T6 today. I really haven't driven it much yet, just from the guys shop to the apartment.
Seems to ride decent. The gas light is on so I need to gas up in the morning and check it out more.
a few things are wrong with it, like the passenger windows doesn't roll down, it just clicks when i push the button... i dont know
and I have yet to figure out if the moon roof moves (is it supposed to? and if so how?)
and I havent figured out how to open the gas door yet.. looks manual maybe its broke/stuck...
114k miles on it so i'll try to take good care of it to last as long as possible!
def going to need some help fixing things

 

the fuel door your gonna have to break open same thing happend on my s70 and i just replaced the plastick latch its about $1.50 at the dealer