BMW 5 Series E60 520d N47 2.0d 177bhp — Turbocharger Failure
Turbo failure on the E60 520d N47 is common from 100,000 miles. The 5 Series tends to be driven harder than the 3 Series, increasing turbo stress.
Severity
SevereDIY Difficulty
Hard
Est. Cost
£800–£1400
OBD Codes
P0299Turbo
Typical layout and location for the Turbo assembly.
Symptoms
- Loud whining from turbo
- Loss of boost and performance
- Blue smoke on acceleration
- P0299 underboost
Root Cause
Oil sludge or low oil level starves the turbo bearings. High-speed motorway use followed by switching off without a cool-down period (heat soak) also causes bearing damage.
How To Fix
- Check oil feed pipe for blockage
- Shaft play test — radial play confirms bearing failure
- Remanufactured unit: £500-900
- Fitted at BMW specialist: £800-1,400
Estimated Repair Costs
| Repair Option | Est. Cost (GBP) |
|---|---|
| DIY (parts only) | £320–£560 |
| Independent Garage | £800–£1400 |
| Main Dealership | £1280–£2240 |
Other Faults on This Variant
N47 Rear Timing Chain Failure
CriticalThe E60 5 Series with the N47 diesel engine carries the same catastrophic rear-mounted timing chain risk as the E90 3 Series. Engine removal is required for repair — making this one of the most expensive known faults in the BMW range.
Swirl Flap Failure and Engine Ingestion
CriticalThe N47 in the E60 5 Series shares the swirl flap failure risk of all N47-engined BMWs. The flap breaks off the corroded actuator rod and is ingested into the engine.
EGR Failure and Coolant Loss
ModerateEGR cooler failure on the E60 520d N47 causes internal coolant leaks into the intake manifold. Combined with EGR valve carbonising, both components typically need replacing together.
Disclaimer: Repair cost estimates are indicative and based on community data. Always get a quote from a qualified mechanic before proceeding with any repair.