I have-98 S90 at 308.000 km (191K miles).
I have had this car only one year, but it has survived pretty good in Finland's climate, i think. It is a great car to drive, but, as we can read from many opinions on these pages, needs good maintenance.
The engine in my car is still OK, no valve sticking or any other problems in the engine at all.
Oil consumption is approx. 1 quarter/10.000 km (6K miles).
No problems in PNP-switch, only the downshifting "kick" bothers me. I took the car to the local Volvo dealer for checking the tranny fault codes, but they coudn't find anything wrong there. The lock operation was tested during the test drive with their mobile tester and it was OK. The mechanic told me that the small "kick" comes from downshifting to 1st gear and is normal.
Front brakes are OK again, when changing back to original Volvo rotors and pads (never again anything else).
All instrument panel bulbs changed (with great help from tips on these pages).
Still having original Nivo's, lowering approx. 20 mm (3/4") during overnight parking.
I don't know, if this is normal or not, but since when starting to drive in the morning there comes a little bit noise from the Nivo's untill they have pumped themselves full with oil (i guess), i think they have to be replaced soon(er or later). The very sad thing is the pricing of the Nivo's.
What do you think about the sway bar links? Ball in plastic cup. I have changed those once and when looking at the maintenance history of my car, it seems that the car eats them.
GREAT PAGES.