BMW Serie 7 E65 M57 (730d) problems
The BMW Serie 7 E65 used the M57 from 2002 to 2008 (730d). 5 documented faults affect it; the most important is “broken intake swirl flaps” (critical severity, common). Our verdict: “With caution”. Among the documented engines of the BMW Serie 7 E65, the safest option is the N62 / N63.
Engine score on this car
3.7 out of 10Low reliability
Only counting the faults that affect the versions and years of the Serie 7 E65. How we calculate it
Overall score for the BMW Serie 7 E65
6.7 out of 10Acceptable reliability
Engines, gearbox, suspension, brakes, electronics and the rest of the car. See breakdown
BMW M57 (M57D25/M57D30) · Diesel
- In the Serie 7 E65
- 2002–2008[1]
- Name
- 730d
- Faults that affect it
- 5 · 2 of high or critical severity
Verdict for the versions it uses
M57D30TU, first revision 3.0 litres (201-272 hp, 2001-2006)2001–2006 · 201–272 hp · M57D30TU
With cautionA BMW specialist workshop places this revision among those that generally have the swirl flaps prone to breaking.[2]
M57D30TU2, second revision 3.0 litres, aluminium block (204-286 hp, 2004-2010)2004–2010 · 204–286 hp · M57D30TU2
With cautionA specialist workshop expressly names the 231 hp E90 330d/330xd and the twin-turbo 335d/535d among the versions with swirl flaps; it points to only a final 197 hp revision of the 325d/525d as an exception.[2]
Faults that affect the Serie 7 E65
- 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.
- 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
- 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
What to check before buying a used BMW Serie 7 E65 M57 (730d)
Each point comes from a documented fault that affects this car. You can tick them off as you inspect it.
If it has the BMW M57 (2002–2008)
Broken intake swirl flaps
Critical severityCrankcase ventilation (PCV) valve failure
High severityCracked exhaust manifold
Medium severityCrankshaft pulley vibration damper failure
Medium severityOther engines and gearboxes of the BMW Serie 7 E65
Score for each one with the faults that affect this car, from best to worst.
Faults of the BMW Serie 7 E65 outside the engine
Suspension, brakes, electronics and the rest of the car: they occur with any engine.
- Medium severityFrequency: OccasionalSuspensionWear of the front suspension arms and bushesAccording to testimonies collected by fiches-auto.fr, the 7 Series E65's front suspension arms, bushes, bearings and ball joints appear in 8 of 64 testimonies. No mileage or cost is given.
- Low severityFrequency: OccasionalBodywork and interiorPaint degradation on door handles and bodywork corrosionAccording to testimonies collected by fiches-auto.fr, 5 of 64 owners of the 7 Series E65 cite paint degrading on the door handles and spots of rust, as well as misting of the headlights.
- Low severityFrequency: RareElectronics and infotainmentiDrive CCC unit failure and infotainment equipment faults (sat nav, CD, radio, speakers)According to testimonies collected by fiches-auto.fr, the iDrive CCC unit and other infotainment equipment (sat nav, CD changer, radio, speakers, DVD player) are among the faults cited for the 7 Series E65. The entry gives no individual figures or costs.
Buying a BMW Serie 7 E65 M57 (730d)?
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Frequently asked questions
Is the BMW Serie 7 E65 M57 (730d) reliable?
The BMW Serie 7 E65 used the M57 from 2002 to 2008 (730d). 5 documented faults affect it; the most important is “broken intake swirl flaps” (critical severity, common). Our verdict: “With caution”. Among the documented engines of the BMW Serie 7 E65, the safest option is the N62 / N63.
What faults does the BMW Serie 7 E65 M57 (730d) have?
The documented ones that affect this car are: 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) and faulty air flow meter on the BMW M57 (loss of power) (low severity).
Which engine should you choose for the BMW Serie 7 E65?
The safest option is the BMW N62 / N63 in its N62B48TU 4.8 naturally aspirated 355-367 hp (550i, 650i, 750i, X5 4.8i; 2005-2010) version, with a «Buy» verdict.
Own a BMW Serie 7 E65 M57 (730d)? Tell us what faults you have had and at how many kilometres. Report your fault.
Sources
Every fact on this page links to its source. If you find an error, let us know.
- BMW 7 Series (E65)Wikipedia (inglés) · Other source · consulted 27 September 2026
- Motor BMW M57 - Reparación EspecializadaDasercars · Technical documentation · consulted 27 September 2026 · in Spanish
- Válvula PCV en motores diéselDasercars · Technical documentation · consulted 27 September 2026 · in Spanish
- BMW M57D30 engine specifications, problems and reliabilityBimmerPulse · Technical documentation · consulted 27 September 2026