High-intent buyer researchBMW

BMW 320d F30 Reliability

The F30 320d can be a strong used BMW when the exact engine, service history, emissions health, and gearbox behavior are verified before purchase.

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Common problems

  • N47 timing-chain noise on earlier cars and poor service history.
  • B47 EGR cooler, DPF loading, and sensor-related emissions faults.
  • Oil leaks around filter housing, valve cover, or turbo oil lines.
  • Automatic gearbox shudder or delayed engagement when fluid service is ignored.

Symptoms to take seriously

  • Rattle on cold start or at the rear of the engine bay.
  • Reduced power, smoke, or frequent DPF regeneration.
  • Coolant smell, oil residue, or uneven idle.
  • Harsh 2-3 shifts, vibration on lock-up, or delayed reverse.

Checks before buying

Confirm whether the car uses N47 or B47 and check invoices by mileage/date.
Scan engine, gearbox, ABS, and emissions modules before and after the test drive.
Inspect EGR, DPF readiness, boost data, coolant level, and oil leak evidence.
Budget for fluids, filters, thermostat/cooling work, and any missing gearbox service.

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P0016 fault code

Fault code

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P0299 fault code

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P0401 fault code

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P2002 fault code

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P2458 fault code

Fault code

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P0700 fault code

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BMW N47 vs B47

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Liste de contrôle pour les voitures d'occasion

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BMW red flags article

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Aide à l'acheteur

Request a used-car risk review

Envoyez-nous le modèle, l'année, le moteur et le kilométrage. Nous vous aiderons à identifier les principaux risques avant d’acheter.

Points faibles connus du moteur et de la boîte de vitesses.
Codes d'erreur et symptômes à vérifier.
Questions d'inspection avant négociation.

Il s’agit d’un guide pour l’acheteur, et non d’une inspection mécanique à distance ou d’une garantie. Vérifiez toujours la voiture en personne avec les diagnostics et les dossiers d'entretien.