Volvo S80 1
Weaknesses, engine ratings and buying advice
The Volvo S80 I (1998–2006) was Volvo’s P2-platform flagship sedan — ten engine variants, and the spread between the best and worst is enormous. The wrong S80 is a money pit. The right one is a quiet cruiser that asks for very little.
Here’s what breaks: The ETM (Electronic Throttle Module) is the headline failure on 1999–2001 turbocharged petrol models. The throttle body’s internal electronics fail, causing sudden power loss at highway speed. Volvo faced class-action litigation, but most cars are now outside that coverage. Replacement: $600–1,200. Any 1999–2001 turbo petrol S80 needs ETM status confirmed before purchase.
The B6294T 2.9L twin-turbo inline-six (T6) is the performance engine and the most expensive to maintain. It’s paired exclusively with the GM 4T65E automatic transmission — a gearbox that was marginal for the torque output from day one. Documented failures at approximately 130,000 km: slipping, harsh shifts, complete loss of forward gears. Rebuild: $2,500–4,500. The T6 also runs hotter than the other engines, accelerating coolant hose degradation and turbo oil feed line coking.
The B5244S 2.4L naturally aspirated five-cylinder (140 hp) is the safest pick. No turbo, no ETM issue, and the Aisin-Warner automatic is far more robust than the GM unit. Understressed at 140 hp from 2.4 liters, it runs past 300,000 km with oil changes and timing belt service.
The D5244T 2.4L D5 diesel (163 hp) is the European long-distance champion. Strong torque, excellent fuel economy, and the same Aisin automatic. Injector failures and turbo actuator wear are the known items from 150,000 km, but parts availability is excellent.
Across all five-cylinder engines: the PCV (positive crankcase ventilation) oil trap system clogs with age. When it blocks, crankcase pressure builds, pushes oil past every seal in the engine, and triggers a cascade of leaks. Replacement: $200–400 for parts, straightforward labor. A clogged PCV on a P2 Volvo mimics multiple expensive failures simultaneously — always check this first before authorizing other seal work.
Front control arm bushings wear from 80,000–120,000 km — clunking over bumps. CV joints click on full lock turns ($300–600 per side).
Test-drive checklist: Warm idle: any ETM hunting (rpm fluctuating 200–300 rpm without input)? T6: transmission — does it shift cleanly through all gears under moderate throttle? Any flare or slip on the 2–3 shift = gearbox on borrowed time. All engines: oil filler cap — sludge or mayonnaise = PCV failure or worse. D5: turbo spool — hesitation or black smoke under load. Suspension: clunking over low-speed bumps.
2026 market: B5244S and D5244T from $1,500–5,000 / $1,500–4,500. T6 from $2,000–5,500 / $1,500–5,000. The T6 premium reflects desirability, not reliability.
Insider pick: B5244S 2.4 NA or D5244T diesel, 2004–2006, manual, documented gearbox fluid change — the naturally aspirated five-cylinder sidesteps every expensive failure mode the S80 is known for. The diesel adds torque and economy. Avoid the T6 unless the transmission has been rebuilt with documentation. Cross-reference: XC70 I shares the P2 platform with identical engine and suspension components.
272 PS
S80 · Benzin
Biturbo six from Gothenburg
Fun to Drive!181–185 PS
2.4L D5 Diesel
5 weaknesses
Stay Away!Generations
Engine Overview
The Volvo S80 1 is available with 8 engine variants — from 140 to 272 hp. 2 variants had engine changes — the model year is crucial.
Volvo's first five-cylinder turbodiesel with 2.4-litre common-rail injection. DOHC with 20 valves and Bosch EDC injection. Good torque delivery for comfortable cruising speeds; sensitive to fuel quality at high injection pressure.
- !! Injector seal leaking (Black Death) from 120,000 km
The copper ring seal under the injectors fails to seal properly. Hot exhaust gas escapes, burning oil and forming black soot crusts around the injectors — known as Black Death.
Symptoms: Black soot crusts visible around injectors, diesel/exhaust smell in engine bay, misfires, rough engine running. - !! Timing belt + water pump from 160,000 km
Replace timing belt every 160,000 km or 10 years. Water pump is belt-driven — if the old pump blocks after a belt change, the new belt is destroyed immediately. Always replace together.
Symptoms: No warning signal. Missed service or old pump leads to engine damage. - !! EGR valve sooted from 120,000 km
EGR valve becomes clogged with soot particles and carbon deposits. When stuck closed power drops; when stuck open the engine runs rough and smokes.
Symptoms: Power loss, rough idle, increased fuel consumption, black smoke, P0400 fault code.
+ 1 more engine weaknesses + vehicle weaknesses
Upgraded D5 generation with 136 kW and increased injection pressure for improved torque of 450 Nm. Variable turbine geometry for improved response. Reliable with regular oil care; check the particulate filter on later versions.
- !! Injector seal leaking (Black Death) from 130,000 km
The copper seal under the piezo injectors no longer seals properly. Combustion gases escape, burn the engine oil, and form black carbon crusts around the injectors — costly problem on the D5244T4.
Symptoms: Black crusts around injectors, soot smell in engine bay, misfires, power loss, increased fuel consumption. - !! Swirl flap linkage breaks from 150,000 km
The plastic swirl flap linkage in the intake manifold fatigues and breaks. Loose parts can be sucked into the combustion chamber and damage valves or pistons. Damage up to €5,000 possible.
Symptoms: Check engine light, power loss, rattling noise from intake area, in worst case engine damage. - !! Timing belt + water pump from 160,000 km
Replace timing belt every 160,000 km or 10 years. Water pump must be changed at the same time without exception. New belt with old pump is a frequent cause of immediate consequential damage.
Symptoms: No warning. Belt failure leads to total damage with bent valves.
+ 2 more engine weaknesses + vehicle weaknesses
Five-cylinder turbocharged petrol engine with 180 hp. Solid engine from the modular range, sharing many parts with the 2.4/2.5L variants. Service the PCV system and timing belt regularly.
- !! Timing belt + CVVT camshaft adjuster from 120,000 km
Interference engine — timing belt failure means total engine damage. Check CVVT unit during belt change; seals age and oil can enter the timing belt area, destroying the belt prematurely.
Symptoms: No warning before belt breaks. CVVT fault: rattling noise on cold start, rough idle. - !! PCV hose cracks — oil on engine from 100,000 km
The PCV hose from the engine block to the separator box develops cracks on the underside that are invisible from above. Result: oil accumulates on top of the engine and in the spark plug wells.
Symptoms: Oil accumulation on top of engine, oil in spark plug tubes, whistling noise under load, slight oil consumption. - !! ETM electronic throttle unit faulty from 130,000 km
The electronic throttle module (ETM) wears out through internal contact corrosion and loose connectors. Mainly affects vehicles up to 2002. Volvo extended the warranty to 10 years. Rebuilt units available.
Symptoms: Check engine light, reduced power, limp mode, engine stalls at idle, fluctuating idle speed.
+ 1 more engine weaknesses + vehicle weaknesses
High-pressure turbocharged five-cylinder with 2.3 litres and intercooling, fitted in the V70/850/C70 and early S60. Timing belt drive with prescribed replacement intervals. Delivers strong torque for spirited motorway runs.
- !! Turbocharger worn under high load from 150,000 km
The high-output 2.3L turbo with up to 250 hp puts heavy load on the turbocharger. Carbon deposits in the turbo cause bearing wear when oil quality or change intervals are inadequate.
Symptoms: Whistling or rattling turbo noise, power loss, blue smoke, oil in intercooler. - !! PCV system critical on turbocharged engine from 80,000 km
PCV oil separator more susceptible on high-boost turbo engines. Crankcase blow-by is elevated. A blocked separator drastically accelerates seal wear.
Symptoms: Heavy oil mist from breather, increased oil consumption, oil leak at rear main seal, smoke from engine bay. - !! Timing belt — mandatory water pump replacement from 160,000 km
Replace timing belt every 160,000 km or 10 years. Water pump is belt-driven and must always be replaced at the same time to avoid consequential damage.
Symptoms: No warning signal. Failure leads to valve collision and total engine damage.
+ 1 more engine weaknesses + vehicle weaknesses
Naturally-aspirated five-cylinder with 2.4 litres from Volvo's proven modular engine family. DOHC with chain drive and from model year 2000 VVT on the intake camshaft. Robust and long-lived, typical of Volvo's earlier reliability philosophy.
- !! Timing belt replacement mandatory from 160,000 km
Timing belt must be replaced every 160,000 km or 10 years — including water pump and tensioner. Neglect inevitably leads to valve damage and total engine failure.
Symptoms: No warning before belt breaks. Vehicle suddenly fails to start or engine makes loud banging. - !! Camshaft adjuster migrates and fails to seal from 180,000 km
The camshaft adjuster of the B5244S can migrate outward by up to 5 mm. The green O-ring slides over an edge and engine oil sprays between the timing sprocket and valve cover. Replacement part costs approximately €360.
Symptoms: Oil loss at the timing side, oil mist in engine bay, check engine light for camshaft position - !! PCV oil separator clogged from 120,000 km
The plastic PCV oil separator (oil trap) housing becomes brittle and clogs internally with sludge. Elevated crankcase pressure forces oil past seals, causing leaks.
Symptoms: Rough idle, whistling noise from engine, oil mist from breather hoses, oil spots under the vehicle.
+ 3 more engine weaknesses + vehicle weaknesses
First turbocharged engine in Volvo's five-cylinder family with low compression ratio and low-pressure turbocharger. Delivers consistent torque across a wide RPM band. Chain drive, solid construction with a well-known focus on longevity.
- !! ETM electronic throttle unit faulty from 100,000 km
The Electronic Throttle Module (ETM) has a wearing carbon track in the position sensor. When it fails, the vehicle enters limp mode. Older engines are frequently affected.
Symptoms: Engine runs rough, stalls when braking, idle surges, ETS warning light on, vehicle enters limp mode. - !! Timing belt + CVVT camshaft adjuster from 160,000 km
Timing belt replacement every 160,000 km. The CVVT camshaft adjuster on the exhaust cam makes the job more complex. A rough adjuster or faulty solenoid causes camshaft faults P0340/P0365.
Symptoms: Check engine light, hesitation under acceleration, hard starting, camshaft sensor fault after timing belt change. - !! PCV oil separator clogged from 100,000 km
Plastic hoses and oil separator become brittle from heat and oil mist. Blockages create vacuum in the crankcase which draws oil out past camshaft and crankshaft seals.
Symptoms: Whistling suction noise in engine bay, oil seeping at rear main seal, rising oil consumption, rear of engine oily.
+ 1 more engine weaknesses + vehicle weaknesses
Evolution of the B5244T with revised turbocharger and updated engine management for better power delivery. 147 kW with higher peak torque than its predecessor. Timing belt drive with CVVT adjuster; observe the 160,000 km replacement interval. Well suited to brisk motorway driving.
- !! ETM electronic throttle unit faulty from 100,000 km
ETM carbon track wears out and causes failures. Known problem on older S60/V70 model years. Short trips in cold climates accelerate wear.
Symptoms: Engine dies when stopping, rough idle, ETS warning light, limp mode under load. - !! Timing belt + CVVT adjuster from 160,000 km
Replacement interval 160,000 km; check CVVT hub for roughness during service. An overdue timing belt and an old water pump are common causes of engine damage on these engines.
Symptoms: No warning before belt breaks. Rough running after belt replacement points to CVVT fault. - !! PCV oil separator clogged from 100,000 km
Typical problem on all Volvo five-cylinders: plastic hoses become brittle, oil separator clogs. Crankcase vacuum draws oil past seals.
Symptoms: Whistling noise, oil leak at rear crankshaft seal, rising oil consumption.
+ 3 more engine weaknesses + vehicle weaknesses
Turbocharged five-cylinder with 2.5 litres and 154 kW, manufactured in Skövde, Sweden. Mitsubishi turbocharger with intercooling for strong mid-range torque. Chain drive; popular as a harmonious all-round engine without extreme peaks.
- !! Timing belt + water pump mandatory from 160,000 km
Replacement interval 160,000 km or 10 years. Timing belt drives water pump. An old pump failing after a belt change can instantly destroy the new belt.
Symptoms: No warning signal. Missed service causes engine damage without warning. - !! PCV oil separator clogged from 100,000 km
Plastic PCV system hoses become brittle and crack, separator clogs with sludge. Crankcase vacuum draws oil past camshaft and crankshaft seals.
Symptoms: Whistling noise from under bonnet, oil spots on underbody at rear of engine, rising oil consumption, smoke from engine bay. - !! Turbo drain pipe seal leaking from 150,000 km
The turbocharger oil drain line seals with O-rings that stretch at higher mileage. Oil loss at the turbo housing and increased oil consumption follow.
Symptoms: Blue smoke after coasting, oil accumulation under the vehicle near the turbo, oil consumption 0.5–1 L per 1,000 km.
+ 1 more engine weaknesses + vehicle weaknesses
Six-cylinder turbocharged engine with 2.8 litres from the early S80 generation. 200 kW with bi-turbo boost for strong linear performance. Complex engine architecture; turbocharger seals and cooling system are critical points at higher mileages.
- !! Camshaft adjuster leaking + timing belt from 100,000 km
Camshaft adjusters (phase regulators) on the B6284T frequently leak oil and fail prematurely. Timing belt must not exceed the 100,000 km interval — a break will bend valves.
Symptoms: Oil patch under bonnet, check engine light, rough engine running, camshaft fault P0340/0365. - !! Water pump + cooling fan control fails from 120,000 km
Water pump and electric cooling fan control unit are prone to failure. The six-cylinder generates high heat and tolerates overheating poorly — head gasket damage is possible if the cooling system is not monitored.
Symptoms: Coolant temperature too high, fan runs continuously or not at all, coolant loss, overheating warning. - !! Air leaks in the boost circuit from 100,000 km
Intake pipes, hose connections, and intercooler couplings on the twin-turbo system are prone to leaks from heat aging. Leaks reduce boost pressure and engine output.
Symptoms: Power loss, whistling noise under load, uneven engine running, P0299 boost pressure fault.
+ 1 more engine weaknesses + vehicle weaknesses
Evolved 2.9-litre T6 six-cylinder with improved turbocharging. 203 kW from an elegant inline-six for Volvo's flagship range. Chain drive, but complex intake geometry; specialist workshop maintenance recommended.
- !! Gearbox overloaded by torque from 120,000 km
The GM automatic gearbox used in the XC90 T6 was not originally designed for the full torque of the B6294T. Gearbox failures on early 2003–2005 models are documented.
Symptoms: Shifting problems, gearbox slips, gear selection refused, gearbox oil leak, harsh jerking when changing gear. - !! Timing belt + camshaft adjusters from 100,000 km
Camshaft adjusters frequently leak oil. Timing belt should be changed every 100,000 km. A break causes costly valve damage. Combination of a leaking adjuster and an old belt is common.
Symptoms: Oil patch at top of engine, camshaft fault code, rough engine running, check engine light. - !! Water pump bearing fails prematurely from 150,000 km
The B6294T water pump is driven via an auxiliary drive shared with the power steering pump. The bearing can fail at high mileage, causing coolant loss. Repair time approximately 3 labour hours.
Symptoms: Squealing or grinding from engine block, coolant loss, rising engine temperature
+ 3 more engine weaknesses + vehicle weaknesses
Vehicle Weaknesses
| Weakness | Cost | |
|---|---|---|
| Automatic gearbox — costly replacement candidate The automatic transmission in the S80 I is considered failure-prone and costly to replace. Repair at a specialist costs €3,000–4,000; Volvo dealers charge up to €6,000–8,000. Regular fluid changes delay failure. Symptoms: Gearbox stops upshifting, vehicle only creeps in first gear, gearbox jumps into neutral from 150,000 km | High | |
| Geartronic automatic wears out without fluid change The Geartronic automatic gearbox in the S80 I requires a fluid change every 50,000–60,000 km. Volvo declared it maintenance-free — which has led to premature failure in many examples. Symptoms: Jerky gear changes, gearbox shifts too late or too early, slip feeling when accelerating from 120,000 km | Medium |
Top Reported Issues
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Known Problems and Issues +
A total of 57 weaknesses have been documented for the Volvo S80 1 (1998–2006) — 47 engine-related and 10 vehicle-related. One problem engine: D5244T4 (2.4L D5). Typical issues affect Gearbox, Suspension, Electronics, Cooling.
S80 (D5244T, 2001–2006) — Be Careful: Injector seal leaking (Black Death), Timing belt + water pump, EGR valve sooted. Power: 163 PS.
S80 (D5244T4, 2005–2006) — Stay Away!: Injector seal leaking (Black Death), Swirl flap linkage breaks, Timing belt + water pump. Power: 185 PS.
S80 (B5244S, 1998–2006) — Be Careful: Timing belt replacement mandatory, Camshaft adjuster migrates and fails to seal, PCV oil separator clogged. Power: 140 PS.
S80 (B5244T, 1998–2006) — Be Careful: ETM electronic throttle unit faulty, Timing belt + CVVT camshaft adjuster, PCV oil separator clogged. Power: 200 PS.
S80 (B5244T3, 1998–2006) — Be Careful: ETM electronic throttle unit faulty, Timing belt + CVVT adjuster, PCV oil separator clogged. Power: 200 PS.
S80 (B5234T3, 1998–2006) — Be Careful: Turbocharger worn under high load, PCV system critical on turbocharged engine, Timing belt — mandatory water pump replacement. Power: 250 PS.
S80 (B5254T2, 1998–2006) — Be Careful: Timing belt + water pump mandatory, PCV oil separator clogged, Turbo drain pipe seal leaking. Power: 209 PS.
S80 (B6284T, 1998–2002) — Be Careful: Camshaft adjuster leaking + timing belt, Water pump + cooling fan control fails, Air leaks in the boost circuit. Power: 272 PS.
S80 (B5204T5, 1999–2006) — Be Careful: Timing belt + CVVT camshaft adjuster, PCV hose cracks — oil on engine, ETM electronic throttle unit faulty. Power: 179 PS.
S80 (B6294T, 2002–2006) — Be Careful: Gearbox overloaded by torque, Timing belt + camshaft adjusters, Water pump bearing fails prematurely. Power: 272 PS.
What to watch out for with the Volvo S80? See the detailed listing of all engine and vehicle weaknesses in the sections above.
Frequently Asked Questions
What problems and weaknesses does the Volvo S80 1 have? +
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Last updated: February 2026 · All information without guarantee