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BMW Serie 5 E39 problems (1995–2004)

All 2 engines of the BMW Serie 5 E39 that we have documented have high or critical severity faults: the BMW M57 and the BMW M54. None has a «Buy» verdict; the safest option is the BMW M54, with a «With caution» verdict.[1][2][3]

Outside the engine: Outside the engine and the gearboxes that have their own pages, the BMW 5 Series E39 accumulates, according to the 317 owner reports on fiches-auto.fr, worn bushes, dead pixels in the instrument cluster, ABS module faults and electrical problems with charging and windows. There are no verified recalls.[4][5]

BMW Serie 5 E39 (1995–2004)
Photo: Alexander Migl · CC BY-SA 4.0 · Wikimedia Commons. Reference image for this generation.
02468105.5out of 10

BMW Serie 5 E39 rating: acceptable reliability

Calculated using only 15 documented faults and their sources: the most serious and frequent faults weigh more. Limited evidence: it is based on few sources or few documented faults, so it is not included in the rankings. Having few documented faults does not mean it is reliable: it may simply be little studied. How it is calculated

  • Engine4.1From 3.7 to 4.6 depending on the engine
  • Gearbox10.0No documented faults
  • Suspension8.51 fault and ITV (technical inspection)
  • Brakes7.31 fault and ITV (technical inspection)
  • Tyres and wheels10.0No documented faults
  • Steering6.3Technical inspection (ITV) only: 1.5 times the defects normal for its age
  • Electrical system8.22 faults
  • Headlights and lights8.0Technical inspection (ITV) only: 0.8 times the defects normal for its age
  • Electronics and infotainment8.91 fault
  • Climate control10.0No documented faults
  • Bodywork and interior7.5Technical inspection (ITV) only: 1.0 times the defects normal for its age
  • Airbags and safety10.0No documented faults

The weak points of the BMW Serie 5 E39

  1. 1Critical severity: Broken intake swirl flapsBMW M57 engine
  2. 2High severity: Crankcase ventilation (PCV) valve failureBMW M57 engine
  3. 3High severity: Thermostat and water pump failureBMW M54 engine
  4. 4High severity: Cracked expansion tank and coolant leakBMW M54 engine
  5. 5High severity: ABS module failure on the BMW 5 Series E39Brakes

Documented engines, from highest to lowest risk

The first label is the most serious fault affecting that engine in this car; the second, our verdict for the versions it is fitted to. Each engine's risk index is calculated only from the faults that affect this car (how we calculate it). We only show engines we have documented with sources: if yours does not appear, we have not analysed it yet. View all engines

See what to check before buying

Outside the engine

12 sourcesHow we work

BMW M57

BMW M57 (M57D25/M57D30) · Diesel

In the Serie 5 E39
1998–2004[5]
Names
525d · 530d
Faults that affect it
5 · 2 of high or critical severity
Risk index on this car
63
High risk

Verdict for the versions it uses

Faults that affect the Serie 5 E39

  1. Critical severityFrequency: CommonIntakeBroken intake swirl flapsYes: most automatic M57 and M57TU engines (330d, 530d, 535d, 730d, X3 3.0d and so on) have six metal flaps in the intake manifold that can seize, come loose and wreck a cylinder. The E53 X5 3.0d and the manual gearboxes of the first 330d/530d are free of them, according to a specialist workshop.
  2. High severityFrequency: CommonLubricationCrankcase ventilation (PCV) valve failureThe valve that separates oil from the crankcase gases (PCV) degrades over time, especially after 120,000-150,000 km, and can cause oil consumption, bluish smoke and a rough idle and, if ignored, foul the turbo, the EGR or the particulate filter.Appears at around 120,000 km
  3. Medium severityFrequency: OccasionalCylinder head and blockCracked exhaust manifoldThe M57 exhaust manifold can crack, causing loss of power, an unstable idle and a smell of exhaust fumes in the cabin; the recommended repair is to replace it with a cast one.
  4. Medium severityFrequency: OccasionalOtherCrankshaft pulley vibration damper failureThe M57 crankshaft vibration damper (pulley) can fail with use, warning with abnormal noises and knocking at the front of the engine before it breaks completely.
  5. Low severityFrequency: OccasionalIntakeFaulty air flow meter on the BMW M57 (loss of power)The air flow meter is a known fault on six-cylinder M57 diesels: over time it loses accuracy and the car pulls less. It is a cheap repair compared with the turbo or injection.Repair (garage): €100–€300

Serie 5 E39 BMW M57 pageAll versions and faults of the BMW M57

BMW M54

Safest option

BMW M54 (M54B22/M54B25/M54B30) · Petrol

In the Serie 5 E39
2000–2004[7][8]
Names
520i · 525i · 530i
Faults that affect it
5 · 2 of high or critical severity
Risk index on this car
54
High risk

Verdict for the versions it uses

Faults that affect the Serie 5 E39

  1. High severityFrequency: CommonCoolingThermostat and water pump failureThe M54's thermostat, housing and water pump contain plastics that become brittle and fail. If left unattended, overheating can warp the aluminium cylinder head. It is advisable to replace them together.Appears at around 129,000 km
  2. High severityFrequency: CommonCoolingCracked expansion tank and coolant leakThe plastic expansion tank degrades over the years and eventually cracks. It is cheap compared with the cost of overheating an M52/M54, and age matters more than mileage.
  3. Medium severityFrequency: CommonLubricationCracked crankcase ventilation valve (CCV) and oil consumptionThe M54's CCV valve (oil separator) is made of plastic and cracks with age: oil then gets into the intake, consumption rises and a rough idle and smoke appear. It is the engine's most frequently cited weak point.Appears at around 96,000 km
  4. Medium severityFrequency: CommonLubricationOil leak from the valve cover gasketThe M54's valve cover is made of plastic and, over the years, warps and stops sealing: oil leaks, a burning smell, oily spark plugs and misfires appear. It is replaced together with the gasket.
  5. Medium severityFrequency: OccasionalOtherWorn VANOS O-ringsThe seals in the VANOS (variable valve timing) system harden with heat and synthetic oil: the engine loses power below 3,000 rpm and the idle becomes rough. It is fixed with a seal kit.Appears at around 129,000 km

Serie 5 E39 BMW M54 pageAll versions and faults of the BMW M54

Faults of the BMW Serie 5 E39 outside the engine

Suspension, brakes, tyres, electronics and the rest of the car. They occur with any engine.

What the MOT inspection finds on the BMW Serie 5 E39

Official Dutch MOT (APK) inspection data: 1,538 inspections of 750 cars registered between 1998 and 2002, compared with cars of the same age.

  • Suspension and axles· counts in the score

    Defects in 6.2% of inspections; in cars of its age, 10.7%.

    Fewer defects than average

  • Brakes· counts in the score

    Defects in 18.6% of inspections; in cars of its age, 14.2%.

    More defects than average

  • Steering· counts in the score

    Defects in 7.5% of inspections; in cars of its age, 4.9%.

    More defects than average

  • Headlights and lights· counts in the score

    Defects in 23.1% of inspections; in cars of its age, 29.2%.

    Average

  • Rust and bodywork· counts in the score

    Defects in 2.2% of inspections; in cars of its age, 2.2%.

    Average

  • Exhaust and emissions

    Defects in 3.7% of inspections; in cars of its age, 7%.

    Fewer defects than average

  • Fluid leaks

    Defects in 31.1% of inspections; in cars of its age, 15.5%.

    More defects than average

  • Glass, wipers and mirrors

    Defects in 7.1% of inspections; in cars of its age, 6.6%.

    Average

  • Tyres and wheels· depends mostly on maintenance

    Defects in 14.1% of inspections; in cars of its age, 17.2%.

    Average

The inspection measures wear and the defects visible at a periodic check, not engine or electronics failures. Source: RDW Open Data (public domain). How we calculate it · opendata.rdw.nl

Checklist for buying a used BMW Serie 5 E39

Check the advert or the paperwork to see which engine the car has and go through its section. Each point comes from a documented fault; you can tick them off as you inspect.

If it has the BMW M57 (1998–2004)

Broken intake swirl flaps

Critical severity

Crankcase ventilation (PCV) valve failure

High severity

Cracked exhaust manifold

Medium severity

Crankshaft pulley vibration damper failure

Medium severity

Faulty air flow meter on the BMW M57 (loss of power)

Low severity

If it has the BMW M54 (2000–2004)

Thermostat and water pump failure

High severity

Cracked expansion tank and coolant leak

High severity

Cracked crankcase ventilation valve (CCV) and oil consumption

Medium severity

Oil leak from the valve cover gasket

Medium severity

Worn VANOS O-rings

Medium severity

Wear parts for the BMW Serie 5 E39

Brakes, wiper blades, pollen filter and battery, searched for this model. The exact part number depends on the engine and year: confirm it with the registration plate or VIN.

Affiliate links: if you buy from these shops, MotorFiable may receive a commission at no cost to you. Check compatibility against the registration plate or VIN before ordering. Affiliate links

Buying a BMW Serie 5 E39?

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Own a BMW Serie 5 E39? Tell us what faults you have had, at what mileage and how much you paid. Report your fault.

Frequently asked questions

Is the BMW Serie 5 E39 reliable?

All 2 engines of the BMW Serie 5 E39 that we have documented have high or critical severity faults: the BMW M57 and the BMW M54. None has a «Buy» verdict; the safest option is the BMW M54, with a «With caution» verdict. Outside the engine and the gearboxes that have their own pages, the BMW 5 Series E39 accumulates, according to the 317 owner reports on fiches-auto.fr, worn bushes, dead pixels in the instrument cluster, ABS module faults and electrical problems with charging and windows. There are no verified recalls.

Which BMW Serie 5 E39 engine is the most reliable?

Among the 2 engines we have documented, none has a «Buy» verdict; the safest option is the BMW M54, with a «With caution» verdict. A long-lived engine if maintained, but expect to renew the cooling system and the CCV if there are no invoices.[1][2][3]

What problems does the BMW Serie 5 E39 have apart from the engine?

Outside the engine and the gearboxes that have their own pages, the BMW 5 Series E39 accumulates, according to the 317 owner reports on fiches-auto.fr, worn bushes, dead pixels in the instrument cluster, ABS module faults and electrical problems with charging and windows. There are no verified recalls. The most important documented faults are: ABS module failure on the BMW 5 Series E39 (brakes, high severity), premature wear of the front arm bushes on the BMW 5 Series E39 (suspension, medium severity), alternator failure and battery drain on the BMW 5 Series E39 (electrical system, medium severity) and fading pixels in the instrument cluster of the BMW 5 Series E39 (electronics and infotainment, low severity).[4][5]

What faults does the BMW Serie 5 E39 have?

The most important by severity and frequency, on the engines we have documented, are: broken intake swirl flaps (BMW M57, critical severity), crankcase ventilation (PCV) valve failure (BMW M57, high severity), thermostat and water pump failure (BMW M54, high severity), cracked expansion tank and coolant leak (BMW M54, high severity) and cracked crankcase ventilation valve (CCV) and oil consumption (BMW M54, medium severity).

What is the best year to buy a BMW Serie 5 E39?

According to our rating by year, the best are 1997, 1996 and 1995 (7.0/10); the worst rated is 1998 (5.3/10). Each year's rating counts only the engines sold that year and the faults that affect those units: open each year to see what changes.

Sources

Every fact on this page links to its source. If you find an error, let us know.

  1. BMW M54 Engine Guide: Reliability, Common Problems & Tuning PotentialEuro Premium Parts · Technical documentation · consulted 5 October 2026
  2. Il motore da 6 cilindri che supera agilmente i 300.000 kmAutoblog.it · Motoring press · published 13 February 2026 · consulted 5 October 2026 · in Italian
  3. BMW M54 reliabilityAutoscore · Other source · consulted 5 October 2026
  4. Tous les problèmes sur Bmw Série 5 1995-2003 (317 témoignages)fiches-auto.fr · Other source · consulted 5 October 2026 · in French
  5. BMW 5 Series (E39)Wikipedia · Other source · consulted 5 October 2026
  6. Motor BMW M57 - Reparación EspecializadaDasercars · Technical documentation · consulted 27 September 2026 · in Spanish
  7. BMW M54Wikipedia (inglés) · Other source · consulted 5 October 2026
  8. BMW M54Wikipedia (alemán) · Other source · consulted 5 October 2026 · in German
  9. Válvula PCV en motores diéselDasercars · Technical documentation · consulted 27 September 2026 · in Spanish
  10. BMW M57D30 engine specifications, problems and reliabilityBimmerPulse · Technical documentation · consulted 27 September 2026
  11. Fallo del depósito de expansión del BMW Serie 5 E39Euro Premium Parts · Technical documentation · consulted 5 October 2026 · in another language
  12. M54 Engine ProblemsBMW Tuning · Technical documentation · consulted 5 October 2026