850 / 850 T-5R / 850R
1991-1997 / Sedan / Estate / Sweden
Photo: Photo by Niels de Wit from Lunteren, The Netherlands / Wikimedia Commons CC BY 2.0
The 850 was a radical departure for Volvo: front-wheel drive, five-cylinder engine, and a completely new platform. Purists were horrified. Then the 850 T-5 arrived with 225hp and won them over. The T-5R, finished in distinctive cream yellow or dark green, was the first truly fast Volvo since the 240 Turbo, and the estate that raced in the British Touring Car Championship became one of the most iconic touring cars of the 1990s.
The 850R followed with even more power and a stiffer suspension tune. In Australia, the T-5R and R models are particularly sought after, with clean examples commanding strong prices. The standard T-5 remains excellent value as a fast, practical car with genuine character. The five-cylinder engine's distinctive exhaust note is part of the appeal, and the 850's combination of performance, safety, and practicality makes it one of the best all-round cars Volvo ever built.
Thinking of buying a 850 / 850 T-5R / 850R?
What to look for, what to pay, what to avoid.
What to watch for.
PCV System Oil Leaks and Breather Box Failures
Common Engine
PCV System Oil Leaks and Breather Box Failures
CommonOil everywhere, particularly around the back of the engine and firewall. You might see smoke at idle or a rough idle. In severe cases, the turbo oil feed line can blow apart because the crankcase is pressurised like a balloon.
Volvo's PCV system is baroque. The breather box (flame trap) sits on the back of the block and clogs with sludge over time. When it blocks, crankcase pressure has nowhere to go, so it forces oil past every seal it can find. The turbo cars are especially vulnerable because boost pressure exacerbates the problem.
Replace the breather box/flame trap assembly. This is a bastard of a job on turbo cars because access is appalling. Budget half a day and skinned knuckles. The box itself is around $100-150. While you're in there, replace all the associated hoses, they'll be brittle. Check the oil trap in the inlet manifold as well, it's part of the same system and often overlooked. Do this every 100,000 km as preventive maintenance.
Timing Belt and Water Pump
Critical Engine
Timing Belt and Water Pump
CriticalThe engine suddenly stops. If you're lucky, nothing else happens. If you're not, you've just destroyed pistons, valves, and possibly the head. This is an interference engine.
The belt is old and tired. The water pump seizes. The tensioner gives up. Take your pick.
Replace the timing belt, water pump, tensioner, and all idler pulleys as a package. No exceptions. Use OEM Volvo parts for the water pump, aftermarket pumps fail early. Expect to pay $400-600 in parts if you DIY, double that at a shop. Interval is 100,000 km or 10 years, whichever comes first. If you don't know the service history, do it immediately.
Oil Consumption (Turbocharged Models)
Critical Engine
Oil Consumption (Turbocharged Models)
CriticalYou're adding a litre of oil every 1000-2000 km. Blue smoke on startup or under boost.
Piston ring wear, especially on high-mileage T5s. The 2.3L and 2.4L turbo engines from the mid-1990s can be oil burners. This is often down to extended oil change intervals and poor-quality oil.
If it's mild, live with it and check the oil obsessively. Severe cases need a bottom-end rebuild or engine replacement. Forged pistons and upgraded rings will sort it permanently but that's a full build, not a repair. Expect $3000+ for a proper engine rebuild.
Turbo Failure (T5 and 850R)
Common Engine
Turbo Failure (T5 and 850R)
CommonLoss of power, screaming noises, oily exhaust smoke. The car feels gutless and the boost gauge stays flat.
Oil starvation from a blocked PCV system, failed turbo oil feed or return lines, or just age and heat cycles. The factory Mitsubishi TD04 turbos are tough, but 200,000+ km and poor oil changes will finish them.
Replace or rebuild the turbo. A rebuilt unit is $800-1200. Upgraded options like a Garrett GT30 or GT35 are popular if you're going down the modification route. Always replace the oil feed and return lines, they're cheap insurance. Check the PCV system at the same time.
Radiator and Expansion Tank Cracks
Common Cooling System
Radiator and Expansion Tank Cracks
CommonCoolant loss, overheating, the temperature gauge climbing past 12 o'clock. You might see pink coolant pooling under the car or steam from the bonnet.
Plastic ages badly. The radiator end tanks crack, the expansion tank splits, hoses perish. It's just time and heat cycles.
Replace the radiator if the end tanks are cracked (common on 200k+ km cars). Expect $250-400 for an OEM-quality radiator. Replace the expansion tank every 5 years as preventive maintenance ($50-80). While you're at it, do all the coolant hoses, especially the ones near the turbo, they bake and go brittle.
Cooling Fan Failures
Common Cooling System
Cooling Fan Failures
CommonThe temperature gauge climbs in traffic or at idle. The radiator fan doesn't spin up when it should.
Failed fan relay, temperature sensor, or the fan motor itself has died. On 850s, there are multiple temperature sensors and it's often the one for the fan circuit, not the gauge.
Test the fan by jumping the relay or running 12V directly to the motor. If the motor works, replace the relay ($20-40) or temperature sensor ($40-80). If the motor is dead, replace the fan assembly ($150-250). You can wire a manual override switch as a temporary fix, but it's not a long-term solution.
Join the conversation.
ETM cleaning, do it yearly or pay $600 later
Anyone tuned their ECU without losing drivability in normal conditions
Turbo lag disappears once the engine is properly warmed up
ETM cleaning, do it yearly or pay $600 later
The 850 T5-R comes alive above 3500rpm
Common questions.
What are the main engine options in the 850?
The 850 came with three main engine choices: the naturally aspirated 2.3L or 2.
What should I check when buying an 850?
Start underneath. Check the crossmember for rot, especially on AWD models where the driveshaft mounts.
How reliable is the 850 as a daily driver?
Dead reliable if maintained. The five-cylinder engine is nearly bulletproof, you'll see plenty running past 300,000km without drama.
What are the common problems?
**ETM (throttle body):** Idle surges, stalling, or won't start when warm. Cleaning helps temporarily but eventually you'll need a replacement or rebuild.
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