Exhaust, clutch, 2 coolant tubes, the intermediate bearing and a wheel bearing over 13000km.
I broke the clutch myself trying to haul a huge trailer up a hill. My mechanic said I'm unfit to drive a car if I manage to break the truck-sized-clutch on a Volvo, but it happened anyway.
The exhaust, tubes and bearings must be considered normal maintenance for a car of this age and mileage.
Rust is coming up in the usual places: Wheel wells, back door.
Very powerful and tractor like engine. Start it in first without gas and it will roll. Needs little shifting. Will almost always run, even if maladjusted or mistreated.
Massive space inside. The smart solution is to fix furniture or other stuff with hooks. Very spacious "cellar" under the boot for tools, an extra pair of shoes etc.
Soft and smooth ride. Excels on cross country rides.
Nothing is easier to park than a cuboid.
Rather cheap to buy, very cheap to maintain, no loss of value anymore.
Gas consumption is okay, and overall you spend less money on maintenance than on extra gas compared with other, more fuel efficient cars of the period. Remember that the design is from the 60s.
A lot of space in the engine boot, makes it a lot easier to some work yourself. Light-signal-controlled real "on-board" OBD is very helpful.
Rust is annoying. The Volvo 700-series is much better preserved.