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Known Faults Database

BMW 1 Series Common Problems & Known Faults (UK)

If you are considering buying a used BMW 1 Series, there are several major reliability issues worth knowing about first. Our garage database tracks 2 known faults for this model, 1 of them rated high severity. Every one below is a repair bill a seller has good reason not to mention.

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BMW 1 Series E90 / E82 (2006-2010) problems

Engine/EmissionsHigh severity📝 Editorial

High Pressure Fuel Pump (HPFP) failure and severe turbo wastegate rattle

Rough guide
£800-2500

Typical symptoms

  • long cranking before engine starts
  • half engine light / limp mode on hard acceleration
  • loud metallic rattling from the exhaust side when lifting off the throttle

Affected vehicles

Engines:
3.0 Twin Turbo (N54)
Typical mileage:
60000-100000 miles
🔍 We have a specific pre-purchase check for this faultCheck an advert →

BMW 1 Series F20 / F30 / E90 LCI (2010-2015) problems

Engine/EmissionsLow severity💬 Owner reports

Plastic turbo charge pipe becomes brittle and shatters under boost pressure

Rough guide
£200-350

Typical symptoms

  • loud pop during hard acceleration
  • immediate loss of power and limp mode
  • hissing sound of escaping boost

Affected vehicles

Engines:
3.0 Single Turbo (N55)
Typical mileage:
40000-80000 miles
🔍 We have a specific pre-purchase check for this faultCheck an advert →
Repair costs are typical UK ranges, not quotes. Actual cost depends on condition and garage.Data last verified: June 2026

Other BMW models

3 Series7 known faults5 Series5 known faultsM32 known faults