BMW M57 (M57D25/M57D30)Lubrication
Crankcase ventilation (PCV) valve failure on the BMW M57
The 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.[1]
Why this rating?
High severity: Risk of a serious engine, turbo or gearbox failure.
Frequency common: The source consulted, a diesel specialist workshop that expressly services the M57 among its engines, describes this fault as common from 120,000-150,000 km in diesel engines of this type in general. We have found no second source giving statistics specific to the M57, so we treat it as a widespread wear problem related to age and mileage rather than a figure exclusive to this engine.[1]
Symptoms
- Oil consumption higher than normal with no external leak visible.[1]Uses oil: other faults that cause it · Garage soon
- White-bluish smoke with a smell of burnt oil from the exhaust.[1]Blue smoke: other faults that cause it · Garage soon
- Loss of power and a lack of response from the engine.[1]Less power: other faults that cause it · Monitor
Why it happens
The crankcase oil valve/separator (PCV) separates the oil from the gases that blow by between piston and cylinder and returns them to the intake to be burnt; with heat and thermal cycling, the internal diaphragm degrades, especially after 120,000-150,000 km.[1]
Among the causes that speed up the failure are accumulated carbon deposits, oil of the wrong specification and extended oil change intervals.[1]
If it is not repaired: If not corrected, the crankcase overpressure can end up fouling the turbo (even seizing the variable geometry), the EGR and the intercooler, and saturate the particulate filter prematurely.[1]
Affected cars and years
It is a problem linked more to mileage and maintenance than to a specific version: it can appear on any M57, although the source consulted documents it generically for diesels of this era and not with M57-specific statistics.[1]
| Version | Years | Codes |
|---|---|---|
| M57D25, 2.5 litres (150-197 hp, 2000-2010 depending on application) | 2000–2010 | M57D25M57D25TU |
| M57D30, first-generation 3.0 litres (177-193 hp, 1998-2006 depending on application) | 1998–2006 | M57D30 |
| M57D30TU, first revision 3.0 litres (201-272 hp, 2001-2006) | 2001–2006 | M57D30TU |
| M57D30TU2, second revision 3.0 litres, aluminium block (204-286 hp, 2004-2010) | 2004–2010 | M57D30TU2 |
Models fitted with the affected versions
BMW
- BMW Serie 3 E461999–2005
- BMW Serie 3 E902005–2008
- BMW Serie 5 E391998–2004
- BMW Serie 5 E602003–2010
- BMW X3 E832003–2010
- BMW X5 E532001–2006
- BMW X5 E702006–2010
- BMW Serie 7 E652002–2008
Land Rover
- Land Rover Range Rover III2002–2006
Opel
- Opel Omega B2001–2003
How much it costs to repair
Includes: Replacement of the crankcase oil valve/separator (PCV); if the fault has already fouled the turbo, the EGR or the intercooler, cleaning or replacing those parts adds to the bill.[1]
We have found no verified quote from Spain specific to the M57.
Prices in Spain, including VAT. A workshop hour costs on average €38–66 at independent garages and €77–134 at dealerships in Spain, depending on the region and the brand. How we calculate costs
How to check for it before buying a used car
Parts needed
The part or kit that fixes this fault, according to the sources.
Crankcase oil valve/separator (PCV)[1]
Replaced when the internal diaphragm degrades and no longer separates the oil from the crankcase gases properly.
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How to prevent it
- Stick to the oil change intervals and use the specification given by the manufacturer: it slows the degradation of the PCV valve diaphragm.[1]
Recalls, campaigns and claims
As of 27 September 2026, we have no record of recalls, campaigns or extended manufacturer warranties for this fault. Check with an official dealer using the chassis (VIN) number: they will tell you whether the car has any outstanding campaign.
What owners say
Frequently asked questions
At what mileage does the M57 PCV valve usually fail?
A diesel specialist workshop puts the usual diaphragm failure at 120,000-150,000 km or more, although this is not a figure specific to the M57 alone but to crankcase oil separators on diesels of that era in general.[1]
What happens if it is not replaced in time?
The crankcase overpressure can end up fouling the turbo (even seizing the variable geometry), the EGR and the intercooler, and saturating the particulate filter prematurely.[1]
How can you tell it is failing?
Through loss of power, white-bluish smoke smelling of burnt oil, high oil consumption with no visible leak and, sometimes, a rough idle with whistling near the rocker cover.[1]
What can you do now?
We will put you in touch with a partner only if you authorise it in the form.
Other BMW M57 faults
- 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.
- 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.
- 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.
- 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
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Sources
Every fact on this page links to its source. If you find an error, let us know.
- Válvula PCV en motores diéselDasercars · Technical documentation · consulted 27 September 2026 · in Spanish