Volvo V70 3

Ford four-cylinder turbodiesel with 1.6 litres marketed as the Volvo DRIVe version. SOHC with timing belt and Euro 5 standard. Very economical; conceived for high-mileage drivers with an efficiency focus.

• !! Timing belt — interval shortened to 140,000 km in 2014 from 140,000 km

  The original 240,000 km (150,000-mile) replacement interval of the PSA-derived DV6 was reduced to 140,000 km (87,500 miles) in 2014. Older vehicles maintained on the original interval carry elevated risk.

  Symptoms: Sudden engine failure without warning, engine damage on belt snap
  400–800 $
  Ad timing belt D4162Ttiming beltkit Volvo D2 1.6 DRIVe
• !! Engine block can crack on overheating from 150,000 km

  The D4162T engine block can crack during overheating events (e.g. from untreated coolant loss). Reports of cracked blocks following coolant starvation are documented in English-language Volvo forums.

  Symptoms: Coolant loss following overheating, engine noises, white smoke, engine oil in coolant
  2,000–6,000 $
  Ad engine block D4162TMotorblock Volvo 1.6D DRIVe
• !! Diesel particulate filter clogs with short-trip use from 100,000 km

  The DPF of the PSA DV6/D4162T requires motorway runs for regeneration. With predominantly urban use the filter clogs quickly. An interrupted regeneration cycle (e.g. from engine stall) accelerates clogging.

  Symptoms: DPF warning light early after purchase, power reduction, increased fuel consumption, soot smell when parking
  300–2,500 $
  Ad DPF Volvo D2particulate filter D4162Tdifferential pressure sensor DPF Volvo

+ 1 more engine weaknesses + vehicle weaknesses

Drive-E four-cylinder diesel with 2.0 litres and 110 kW for the D3 range. Common-rail injection with Euro 6 standard and single-stage turbocharging. Economical all-round diesel with good fuel consumption figures for high-mileage users on medium-length routes.

• !! EGR cooler soot-clogged — fire risk from 60,000 km

  The D3/D4 VEA diesel had a defective EGR cooler gasket that formed soot paste from condensation. EGR pipes and cooler clogged up to 90%. Volvo issued a recall in 2020 due to fire risk. Dealers reported 5–10 repairs per week.

  Symptoms: Check engine light, engine throttling ('turtle mode'), EGR fault code, in severe cases smoke from engine bay
  500–1,500 $
  Ad EGR-radiator D4204T9EGR radiator Volvo D3EGR valve D4204T
• !! Timing belt maintenance must be observed from 150,000 km

  The D3 Drive-E uses a timing belt with a change interval of approx. 108,000 miles / 10 years. Many used vehicles have no documented belt replacement. Belt failure means total engine damage.

  Symptoms: No warning before belt failure — engine stall. Belt check: look for cracking, wear, hardened rubber
  600–1,200 $
  Ad timing beltsatz D4204T9 Volvo D3timing beltsatz V40 D3 2.0
• !! DPF clogging with short-trip use from 150,000 km

  The 2.0 D3 VEA requires sufficiently long drives for DPF regeneration. Short-trip use prevents complete regeneration cycles. DPF cleaning or replacement necessary at 150,000–200,000 km.

  Symptoms: DPF warning light, power loss, increased fuel consumption, soot smell
  800–3,000 $
  Ad DPF Volvo D3 D4204T9particulate filter Volvo 2.0 Diesel

+ 4 more engine weaknesses + vehicle weaknesses

D4 four-cylinder diesel with 140 kW and twin-turbocharging for strong torque of 400 Nm. Euro 6 compliant with SCR catalyst and common-rail injection at up to 2,000 bar injection pressure. Robust base with known particulate filter issues with frequent short-trip use.

• !! EGR recall due to fire risk (same as D3) from 60,000 km

  The D4 190 hp VEA diesel was also affected by the 2020 EGR cooler recall. Clogged EGR systems with fire risk occurred on vehicles with the D4204T14 engine just as on the weaker D3. Check recall status.

  Symptoms: Check engine light, engine throttling, in severe cases smoke from engine bay
  500–1,500 $
  Ad EGR-radiator D4204T14EGR valve Volvo D4 190PS
• !! Turbocharger failure — turbine wheel collapse from 100,000 km

  The D4 Drive-E turbocharger shows turbine wheel damage from 80,000–120,000 km. Debris can contaminate the intercooler. Primary cause: frequent short trips and overdue oil changes.

  Symptoms: Sudden power loss, black smoke, metallic whistling or grinding from engine bay, check engine light
  1,200–3,000 $
  Ad turbocharger D4204T14 Volvo D4turbocharger V40 D4 190PS replacement
• !! DPF issues from high EGR soot load from 120,000 km

  On the D4 variant, the elevated EGR soot input also leads to accelerated DPF clogging. The combined EGR+DPF problem makes diagnosis difficult. A predominantly short-trip driving profile worsens both issues.

  Symptoms: DPF warning light, engine power reduction, increased fuel consumption, occasionally rough running
  800–3,000 $
  Ad DPF D4204T14particulate filter Volvo D4 190PS

+ 4 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.
  300–1,500 $
  Ad fuel injector gasket D5244T4Volvo D5 185PS fuel injectorgasketfuel injectorn-Klemme kit XC90 D5
• !! 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.
  200–5,000 $
  Ad swirl flap linkage D5244T4Drallklappe Volvo D5 185PSintake manifold D5244T4
• !! 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.
  500–850 $
  Ad timing belt D5244T4timing beltsatz Volvo D5 185PSwater pump D5244T4

+ 2 more engine weaknesses + vehicle weaknesses

D5 with two-stage sequential turbocharging for 151 kW and immediate response from low RPM. Small turbo for responsiveness, large turbo for high-load work. Complex to maintain due to the two-stage turbo system.

• !! Injector seal leaking from 140,000 km

  On the later D5244T10, injector copper seals can also leak. The two-stage turbocharging system increases cylinder pressure, placing greater stress on sealing surfaces.

  Symptoms: Black deposits around injectors, fuel smell, misfires, rough engine running.
  300–1,500 $
  Ad fuel injector gasket D5244T10fuel injectorn-Kupferdichtring Volvo D5 205PS
• !! Swirl flap linkage breaks from 150,000 km

  The intake manifold swirl flap on the D5244T10 carries the same design problem as in the T4. The plastic linkage fatigues and breaks; loose parts can cause engine damage.

  Symptoms: Check engine light, rattling intake noise, power loss, possible engine damage on complete failure.
  200–4,000 $
  Ad swirl flap D5244T10Drallklappe Volvo D5 205PSintake manifold D5244T10
• !! Timing belt + water pump from 160,000 km

  Replacement interval 160,000 km or 10 years. On the two-stage turbo diesel, engine damage from belt failure is even more costly — so maintenance must not be skipped.

  Symptoms: No warning signal. Belt failure leads to immediate engine damage.
  500–850 $
  Ad timing belt D5244T10water pump D5244T10 Volvo

+ 1 more engine weaknesses + vehicle weaknesses

Strongest D5 variant with 158 kW and 440 Nm, bi-turbo charged for dynamic performance. Most powerful development stage of the proven 5-cylinder diesel with Euro 5 standard. Fitted in the more sporting diesel versions of all large Volvo model ranges.

• !! Timing belt + water pump from 160,000 km

  Replacement interval 160,000 km or 10 years — also on the automatic variant (175 hp version). Belt-driven water pump must always be replaced at the same time.

  Symptoms: No warning signal. Belt failure leads to engine damage.
  500–850 $
  Ad timing belt D5244T15Volvo D5 timing beltsatz 215PS
• !! Injector seal leaking from 130,000 km

  The final D5244T15 also retains the copper seal problem of the D5 family at the injector copper rings. Sealing integrity should be checked regularly on vehicles over 5 years old.

  Symptoms: Black deposits around injectors, exhaust smell, misfires.
  300–1,500 $
  Ad fuel injector gasket D5244T15fuel injectorn-Kupferdichtring Volvo D5 215PS
• !! DPF clogs with short-trip use from 150,000 km

  DPF on the D5244T15 clogs like all D5 generations with predominantly short-trip use. Longer motorway runs for active regeneration are recommended.

  Symptoms: DPF warning light, power loss, oil level rises (diesel in oil), increased fuel consumption.
  300–2,500 $
  Ad DPF D5244T15 Volvoparticulate filter D5 2.4 215PS

+ 1 more engine weaknesses + vehicle weaknesses

EcoBoost turbocharged four-cylinder with 1.6 litres, developed in the Volvo-Ford partnership and manufactured in Wales. Direct injection with turbocharging for good torque at low fuel consumption. Note thermal stress on the turbocharger during spirited driving.

• !! Cylinder head overheats on coolant loss — recall from 60,000 km

  The Ford-derived 1.6 EcoBoost (B4164T) had a defective head gasket with incomplete die-cut holes that restricted coolant flow. Overheating without warning possible due to missing coolant level sensor — led to a recall.

  Symptoms: Sudden coolant loss without warning, engine temperature rises quickly, coolant smell
  800–3,000 $
  Ad cylinder head gasket B4164Tcylinder head gasket Volvo 1.6 EcoBoost
• !! Recall: coolant monitoring inadequate (2014)

  Ford recalled in 2014 vehicles with the 1.6-litre EcoBoost because the cylinder head could overheat and catch fire if coolant was lost. Fix: retrofit of a coolant level sensor and software update.
• !! Turbo coolant hoses split from 80,000 km

  On the Ford-derived EcoBoost engine of the B4164T, coolant hoses at the turbo crack under thermal and pressure cycling. Coolant loss under load is possible and can lead to overheating.

  Symptoms: Coolant loss after motorway driving, white steam from engine bay, rising coolant temperature
  100–400 $
  Ad turbo coolantschlauch Volvo 1.6 EcoBoostcoolantschlauch Turbo B4164T

+ 1 more engine weaknesses + vehicle weaknesses

Naturally-aspirated four-cylinder with 2.0 litres on the P1 platform from Volvo/Ford. DOHC with chain drive, good long-term stability with correct oil care. Adequate for everyday use; not a sporting engine.

• !! Timing belt failure = total engine damage (interference engine) from 100,000 km

  The B4204S4 is an interference engine. Timing belt change at the latest every 90,000–120,000 km or 8 years. Missing service history on a used car is a warning sign — inspect the belt immediately.

  Symptoms: Sudden engine stop, no restart, valve noise just before failure
  400–750 $
  Ad timing belt B4204S4timing beltsatz Volvo 2.0 S40 II
• !! Water pump leaks — belt-driven from 120,000 km

  The water pump of the B4204S4 is driven by the timing belt and should be replaced with every belt change. Pump leakage or bearing failure can cause overheating and damage the belt through escaping coolant.

  Symptoms: Coolant loss without visible external leak, faint grinding noise, temperature rise especially in city traffic.
  200–600 $
  Ad water pump B4204S4water pump Volvo 2.0 S40 II
• ! VVT solenoid leaks and sludges from 120,000 km

  The variable valve timing solenoid (VVT) tends to oil up and sludge. Oil contamination in the belt area from a leaking VVT solenoid is a common finding during a timing belt change.

  Symptoms: Oil in belt cover, rough idle when cold, slightly elevated oil consumption
  100–350 $
  Ad VVT solenoid valve Volvo B4204SVVT solenoid valve Volvo 2.0

+ 1 more engine weaknesses + vehicle weaknesses

First Drive-E turbocharged four-cylinder with 2.0 litres and 140 kW, Volvo's completely redesigned engine family from 2013. Direct injection, twin-scroll turbocharger, and variable oil pump. Light aluminium open-deck block for low fuel consumption; watch for thermostat problems on early build dates.

• !! Timing belt — change interval 120,000 km/8 years from 130,000 km

  All Drive-E four-cylinders use a timing belt rather than a chain. Change interval is 120,000–150,000 km (some sources: 12–16 years). Earlier change recommended at high mileage.

  Symptoms: No warning before sudden failure; occasional belt squeal with failing tensioner
  500–900 $
  Ad timing belt B4204T19timing beltkit Drive-E T4
• !! Excessive oil consumption due to defective piston rings (up to MY2016) from 80,000 km

  Drive-E engines from early production years (2013–2016) show a known piston ring problem with increased oil consumption. A class action lawsuit in the USA documented the issue. Rings were revised from MY2016.5.

  Symptoms: Heavy oil consumption (1 L / 1,000 km or more), blue smoke from the exhaust especially on acceleration, frequent top-ups required
  1,800–3,500 $
  Ad piston rings B4204T19 Drive-Episton ring set Volvo 2.0 turbo
• !! Oil consumption from weak piston rings (VEP4 issue) from 50,000 km

  The Drive-E four-cylinders (VEP4) were fitted with low-tension piston rings to reduce friction. Result: elevated oil consumption, especially in the early production phase 2014–2016. Volvo extended the warranty to 8 years/160,000 km.

  Symptoms: Dropping oil level without visible leaks, occasional blue smoke, oil consumption above 0.5 L/1,000 km
  1,500–5,000 $
  Ad piston rings B4204TVEP4 oil control ringpiston rings Drive-E 2.0

+ 3 more engine weaknesses + vehicle weaknesses

Drive-E turbocharged four-cylinder with 2.0 litres and 187 kW for the T5 range. Larger turbocharger than the T4 with higher boost pressure for a more sporting character. Eight-speed Aisin automatic as standard; strictly observe oil change intervals.

• !! Timing belt — change every 120,000 km mandatory from 120,000 km

  All Drive-E T variants use belt drive. On the T5 with high-pressure turbo, the belt change is especially important — a failure causes immediate total engine damage. Recommendation: early change at 100,000 km.

  Symptoms: No warning before sudden failure; possible squealing with failing tensioner
  500–1,000 $
  Ad timing belt B4204T23timing beltsatz Volvo T5 Drive-E
• !! Oil consumption piston ring failure (early Drive-E series) from 80,000 km

  The high-output T5 Drive-E shares the piston ring problem with the T4. Vehicles up to MY2016 are particularly affected. Increased oil consumption is systemic and was covered by a class action lawsuit.

  Symptoms: Oil consumption above 0.5 L/1,000 km, blue smoke on warm-engine acceleration, oil level drops noticeably between changes
  2,000–4,000 $
  Ad piston rings B4204T23 Drive-E T5piston rings S60 T5 2.0
• !! Timing belt interval and tensioner — critical maintenance from 130,000 km

  The Drive-E T5 uses a timing belt (not a chain). Volvo's stated change interval is 150,000 miles / 10 years, but specialists recommend considerably earlier (120,000–150,000 km). Belt failure causes engine damage.

  Symptoms: No early warning signs typical — sudden engine stop without prior indication at belt failure. Prevention: inspect for cracking at every service
  500–1,000 $
  Ad timing beltsatz B4204T23 Volvo T5 Drive-Etiming belt S60 T5 2014

+ 3 more engine weaknesses + vehicle weaknesses

Uprated variant of the 2.5-litre turbocharged five-cylinder with 169 kW and improved turbocharger geometry. Fitted in the second-generation V70 III and S80 II. Good balance of performance and long-term reliability with correct maintenance.

• !! Timing belt + water pump from 160,000 km

  Timing belt replacement every 160,000 km or 10 years including water pump. Water pump is belt-driven — an old pump failing after belt replacement destroys the new belt.

  Symptoms: No warning signal. Belt failure leads to total engine damage.
  550–950 $
  Ad timing beltsatz B5254T7water pump Volvo 2.5 turbo
• !! PCV oil separator clogged from 100,000 km

  Identical problem to the B5254T2: plastic PCV system components fail with age. Elevated crankcase pressure forces oil through seals.

  Symptoms: Whistling noise, oil leak at rear of engine, rising oil consumption, oil mist from breather hoses.
  150–500 $
  Ad PCV oil trap B5254T7Volvo 2.5 breather box
• !! Wastegate actuator faulty from 150,000 km

  The boost pressure regulator actuator (wastegate) can seize or suffer diaphragm damage. The result is uncontrolled boost pressure or power loss.

  Symptoms: Severely fluctuating power, sudden power loss, limp mode, check engine light with boost pressure fault code.
  400–1,500 $
  Ad wastegate actuator Volvo 2.5Tturbo actuator motor B5254T7

+ 3 more engine weaknesses + vehicle weaknesses

Strongest variant of the 2.5-litre turbocharged five-cylinder with 187 kW and an improved intercooler. Delivers high torque across a wide RPM band with good everyday usability. Used in S60 Polestar-optimised versions and as the V60/S60 T5.

• !! Piston ring recall due to systemic oil consumption (2013–2016) from 80,000 km

  Volvo officially identified piston ring defects on the B5254T12. Low-tension rings fitted for efficiency reasons caused heavy oil consumption. Repair solution: piston ring replacement. Vehicles before serial number 1501327 most affected.

  Symptoms: Oil consumption above 0.5 L/1,000 km, blue smoke on cold start, frequent oil top-ups required.
  1,500–4,000 $
  Ad piston rings B5254T12piston rings Volvo 2.5T S60 II
• !! Timing belt and water pump — interference engine, strict intervals from 160,000 km

  The B5254T12 is an interference engine. Timing belt and water pump must be replaced together as prescribed. The timing belt drives the water pump; a slow pump leak can contaminate the belt and destroy it prematurely.

  Symptoms: No warning before belt breaks. Squealing on cold start indicates a failing tensioner.
  500–900 $
  Ad timing beltsatz B5254T12timing belt Volvo 2.5T S60 II V60
• !! PCV oil separator clogged from 100,000 km

  Plastic PCV housing becomes brittle, oil separator clogs. Typical Volvo five-cylinder problem across all turbo variants. Elevated crankcase pressure accelerates seal wear.

  Symptoms: Whistling noise, oil seeping at rear main seal, elevated oil consumption, engine oil mist.
  150–500 $
  Ad PCV oil trap B5254T12breather box Volvo 2.5T

+ 1 more engine weaknesses + vehicle weaknesses

Short inline-six (SI6) with 3.0 litres and turbocharging, developed under the Ford-Volvo cooperation. 210 kW with more linear power delivery than its predecessor. Transversely mounted in the large Volvo models; check oil supply and crankshaft bearings at high mileages.

• !! Elevated oil consumption (pre-2012) from 80,000 km

  Engines before model year 2012 had systematically elevated oil consumption due to a piston ring design problem. Volvo acknowledged this and offered an extended warranty and piston ring replacement.

  Symptoms: Engine oil depletes rapidly, blue smoke from exhaust, oil level must be topped up multiple times between changes.
  1,500–5,000 $
  Ad piston ring set B6304T2Volvo SI6 oil consumption fixB6304T2 pre-2012 pistons
• !! Piston ring design flaw on early engines from 80,000 km

  Early B6304T2 engines (up to 2012) were delivered with excessively weak piston rings optimised for efficiency. Volvo recognised the problem and revised the rings. Affected vehicles show noticeably elevated oil consumption.

  Symptoms: Oil consumption above 1 L/1,000 km, poor idle, white or blue exhaust smoke
  2,000–6,000 $
  Ad piston rings B6304T2piston rings Volvo 3.0 T6piston ringsatz Volvo SI6
• !! Thermostat sticks closed from 110,000 km

  The B6304T2 thermostat occasionally sticks in the closed position and does not allow coolant to the radiator. Operating temperature quickly rises to critical levels. The plastic thermostat housing is also prone to cracking.

  Symptoms: Engine temperature rises too quickly, coolant boils, temperature warning, heater stays cold
  150–500 $
  Ad thermostat B6304T2thermostat Volvo 3.0 T6coolant-thermostat Volvo XC60 S60 V70 3.0 T6

+ 3 more engine weaknesses + vehicle weaknesses

Updated SI6 engine with 3.0 litres and increased output of 224 kW. Improved turbocharger and revised ECU compared to the T2. Complex maintenance due to a tight engine bay; chain tensioner and oil pump are known service points.

• !! Elevated oil consumption (pre-2012) from 80,000 km

  Engines before model year 2012 had a known piston ring problem with elevated oil consumption. Volvo offered an 8-year / 100,000-mile warranty extension. Revised pistons and rings from 2012.

  Symptoms: Rapidly dropping oil level, blue exhaust smoke, engine oil blackens faster than normal.
  1,500–5,000 $
  Ad piston ring B6304T4Volvo SI6 3.0 oil consumptionB6304T4 updated pistons
• !! Timing chain (rare, but expensive) from 200,000 km

  The SI6 timing chain is fundamentally robust and 'engine-life' rated. Rare but documented: chain tensioner gives up and chain slaps. Repair on this engine is very labour-intensive.

  Symptoms: Rattling or chattering noise from top of engine especially cold, check engine light, P0340 fault.
  1,500–4,000 $
  Ad timing chain tensioner B6304T4timing chain kit SI6Volvo T6 3.0 timing chain
• !! Thermostat sticks closed from 110,000 km

  The B6304T4 thermostat sticks in the closed position, especially when it has not been changed for a long time. The warm-up phase is normal, but then it fails to open and engine temperature climbs to critical levels.

  Symptoms: Engine temperature rises too high after a short drive, temperature warning, poor heater output in cold weather
  150–500 $
  Ad thermostat B6304T4thermostat Volvo 3.0 T6 XC60 XC70coolant-thermostat Volvo SI6

+ 3 more engine weaknesses + vehicle weaknesses

Naturally-aspirated short inline-six with 3.2 litres, 175 kW, and smooth running. Developed for Volvo flagship models as a refined alternative to the turbocharged engine. Chain drive with known chain tensioner weaknesses at higher mileages.

• !! READ unit (thrust bearing) fails from 130,000 km

  The READ (Rear Engine Auxiliary Drive) on early B6324S engines uses needle bearings instead of ball bearings. These bearings can seize with inadequate lubrication. Switched to ball bearings from 2011 (B6324S5).

  Symptoms: Loud rattling or grinding from the rear of the engine, oil pressure loss, MIL light, engine noise under load.
  800–3,000 $
  Ad READ-Einheit B6324SVolvo 3.2 rear aux driveneedle Lager B6324S
• !! READ unit bearing failure (up to 2010) from 120,000 km

  Before MY2011, the READ unit (Rear Engine Ancillary Drive) uses needle roller bearings that can fail prematurely under splash lubrication. Typical symptom: squealing/grinding from the engine bay. Complex removal with special tooling required.

  Symptoms: Grinding or rumbling from the right-hand side of the engine bay, especially on cold start; progressively louder
  800–2,500 $
  Ad READ-Einheit Lager B6324SRear Engine Ancillary Drive Volvo 3.2
• !! Camshaft end plugs leaking from 100,000 km

  Technical service bulletins document oil leaks at the B6324S camshaft end plugs. Oil seeps from the side of the cylinder head. Volvo has issued a repair procedure.

  Symptoms: Oil leak at the side of the cylinder head, oil smell after driving, engine oil loss with no visible underbody source.
  200–800 $
  Ad camshaft end plug B6324Scamshaftndeckel Volvo 3.2Volvo TNN21-28

+ 4 more engine weaknesses + vehicle weaknesses

Evolved 3.2-litre naturally-aspirated engine with reduced internal friction and 179 kW. Improved crankshaft bearing and revised thermal management. Manufactured at the Ford plant in Wales; check chain tensioner above 150,000 km.

• !! Camshaft end plugs leaking from 100,000 km

  B6324S5 camshaft end plugs can leak oil — same TSB issue as the predecessor. Volvo has issued a repair procedure (TNN21-28).

  Symptoms: Oil seeping from the side of the cylinder head, oil smell after driving, gradual oil loss.
  200–800 $
  Ad camshaft end plug B6324S5camshaftndeckel Volvo 3.2 2011+
• !! PCV diaphragm valve fails — oil sucked into intake from 100,000 km

  The B6324S5 uses a diaphragm for PCV regulation. When the diaphragm fails, full intake vacuum acts on the crankcase: oil is actively drawn into the intake tract. A functioning PCV system shows slight negative pressure at idle.

  Symptoms: Oil consumption with no visible leaks, oil in air filter element, rough idle, whistling noise.
  200–700 $
  Ad PCV diaphragm B6324S5crankcase ventilation Volvo 3.2 XC90
• ! Slight to moderate oil consumption from 150,000 km

  Even the revised B6324S5 shows slight to moderate oil consumption at higher mileages. Up to 0.5 L per 1,000 km is internally tolerated by Volvo, but should be monitored.

  Symptoms: Oil level visibly drops between oil changes, no smoke or leaks detectable.
  100–3,000 $
  Ad piston ring set B6324S5valve stem seals Volvo 3.2

+ 1 more engine weaknesses + vehicle weaknesses