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BMW M47
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BMW M47
Verdict
SOLID · 61/100
Est. cost /3yr
€1,800-5,400 over 3 years depending on mileage, service history, and whether swirl flap, pulley, and timing belt work has already been done
Oil interval
10,000 km
Recalls
0
Worst issue
Swirl Flap Failure / Ingestion
CRITICAL
BMW M47
E46/E90 · Pre-LCI
Swirl Flap Failure / Ingestion
€300-1,200 (preventive removal); catastrophic if ingested
CRITICAL
Crankshaft Pulley / Harmonic Balancer Failure
€150-450
HIGH
Water Pump Failure
€300-700
HIGH
EGR Cooler Cracking / Leaking
€400-1,200
MODERATE
EGR Valve Malfunction / Carbon Buildup
€200-600
MODERATE
Blow-by / Oil Consumption
€200-800
LOW
Valve Cover Gasket Oil Leak
€80-250
LOW
BMW M47
E46/E90 · Pre-LCI
•Inspect the swirl flap area for looseness or missing blanking; ask whether flaps have been removed or blanked preventively
•Check service history for timing belt and water pump replacement; if undocumented, budget for immediate replacement since this is an interference engine
•Inspect the crankshaft pulley at idle for visible wobble and check the rubber decoupler ring for cracking
•Pressure-test the cooling system and inspect the EGR cooler for coolant weeping
•Scan with OBD diagnostics for EGR, boost, and coolant temperature fault codes before purchase
•Check oil level and condition; milky or frothy oil indicates possible coolant contamination
•Ask for the engine build date, not just the registration date, cars built from 2006 onward have the revised, sturdier swirl flap design
BMW M47
E46/E90 · Pre-LCI
Swirl flaps (intake manifold)
Inspect or proactively remove/blank with appropriate ECU adjustment before ingestion occurs, especially on pre-2006 spindle design
100,000-200,000 km
Crankshaft pulley (harmonic balancer)
Inspect rubber decoupler ring for cracking or delamination; replace if any play detected
100,000-130,000 km
Water pump
Replace proactively at timing belt service interval
120,000 km
Timing belt kit
Replace with OEM-quality kit including tensioners and idlers; do not extend beyond recommended interval, this is an interference engine
120,000 km
EGR cooler
Inspect for coolant weeping as a routine wear check, not a recall item on this engine
80,000-180,000 km
BMW M47
E46/E90 · Pre-LCI
No recalls on record
BMW M47
E46/E90 · Pre-LCI
✓Proven diesel architecture with a long production run from 1998 to 2007
✓Common-rail injection from September 2001 (M47TU) onward improved refinement over the original M47D20
✓340 Nm torque on the top M47TU2 tune gives strong real-world pulling power for a 2.0L diesel of this era
✓Large, mature community with well-documented DIY repair guides given huge production volume
✓Good parts availability given widespread fitment across BMW, Rover, MG, and Land Rover platforms
✓Core block is genuinely capable of high mileage, 300,000+ km and sometimes 400,000+ km, when maintained properly
BMW M47
E46/E90 · Pre-LCI
Real consumption
5.6 L/100km
Official consumption
5.5 L/100km
Oil interval
10,000 km
Oil spec
BMW Longlife-98 5W-30 fully synthetic for pre-DPF cars (2001-2004); BMW Longlife-04 5W-30 for later DPF-equipped examples (roughly 2005-2007)
Est. cost /3yr
€1,800-5,400 over 3 years depending on mileage, service history, and whether swirl flap, pulley, and timing belt work has already been done
BMW M47
E46/E90 · Pre-LCI
150 hp · 330 Nm
2001-2004
163 hp · 340 Nm
2004-2007
Don't choose between the 150hp and 163hp M47 based on power alone, the meaningful difference is the swirl flap spindle revision, not the tune. BMW moved to a stronger, larger-diameter plastic spindle from 2006, which spans the tail end of both the M47TU and M47TU2 production. Ask for the engine build date rather than relying on the model year or advertised hp, and check whether the flaps have already been removed or blanked. A 150hp car with documented swirl flap work and a healthy pulley is a safer buy than a 163hp car with no history.