Why it can be a good car
The S80 T6 is one of the most underrated luxury sedans you can buy for the money, and the only reason it is cheap is a badge that scares people who have never owned one. The 3.0-litre turbocharged inline-six makes 300 horsepower, runs a timing chain rather than a belt, and has no documented systemic engine failure — owners who keep up with oil changes routinely see past 300,000 km. It is paired with the robust Aisin six-speed automatic, and Volvo's body panels of this era resist rust far better than their German rivals. It sits on Volvo's P3 platform, shared with the S60, V70, XC70, and XC60 of the period.
Why it can be a bad car
It is still a complex, all-wheel-drive Swedish flagship, and two items can add up quickly on the wrong example: the AWD angle gear and the air conditioning. A salt-belt car can also hide underbody corrosion even when the panels look clean. Buy the right one and it is a lot of car for the money; buy a neglected one and it gets expensive.
Does it have a timing belt or a timing chain?
A timing chain. The turbocharged inline-six uses a chain, so there is no belt interval to worry about. One quirk: the chain is mounted at the back of the engine, against the transmission, which makes any chain work labour-intensive if it is ever needed.
The things to check before you buy
- AWD angle gear The documented weak point on AWD Volvos of this era. The small right-angle gearbox that turns power toward the rear axle has an internal collar sleeve that can strip its splines, quietly dropping the car to front-wheel drive. Confirm AWD actually engages (on a hoist or a loose surface) and listen for a whine or growl underneath that rises with road speed.
- Air conditioning Pin down exactly how it fails if it is weak — a recharge is trivial, a compressor is not.
- Transmission fluid Almost certainly overdue at higher mileage despite the fill-for-life myth; you want a service record and clean, smooth shifts across a long, varied test drive.
- Tyres This AWD system hates mismatched or unevenly worn tyres — running them is one of the ways owners strip that angle-gear collar in the first place. Confirm all four match in size, brand, and wear.
- Underbody corrosion Panels resist rust, but the subframe mounts and the brake and fuel lines on a salt-belt car are where the real damage hides.
- Cooling system Water pump, thermostat, and hoses are at the age where they start letting go.
What would make you walk
- A failing angle gear Grinding or whining from the driveline, or AWD that will not engage.
- A dead A/C compressor If the A/C fault is a compressor rather than a cheap recharge, price it in or walk.
- Structural rust Rot at the subframe mounts or corroded brake and fuel lines on a salt-belt car.