N54 vs M54

Side-by-side reliability comparison

Higher reliability score
M54 BEST 93/100
+61 points over N54
0 / 100
AVOID N54 BMW
0 / 100
BEST M54 BMW

Specifications

N54
M54
Brand
BMW
BMW
Verdict
AVOID
BEST
Reliability
32
93
Years
2006--2010
2000--2006
Displacement
2979 cc
2979 cc
Layout
I6
I6
Type
Petrol Turbo
Petrol Na
Power
306 hp
170--231 hp
Known Issues
4
4
Total Risk Cost
€4,500--€10,700
€530--€1,250

Character

N54

"Huge tuning potential ("European 2JZ"). Constant problems. Project car, not daily."

M54

"Peak old-school BMW. Raspy, high-revving, raw. The benchmark. 300k+ km routine."

Issues Comparison

N54 4

◆ CRITICAL
High pressure fuel pump (HPFP) failure €800--€1,500 30,000 km--100,000 km
◆ CRITICAL
Turbocharger failure (one or both) €1,500--€4,000 100,000 km--200,000 km
▲ HIGH
Piezoelectric injector failure (x6) €1,800--€4,000 60,000 km--150,000 km
● MODERATE
Wastegate rattle / actuator failure €400--€1,200 60,000 km--150,000 km

M54 4

● MODERATE
Cooling plastics — water pump impeller critical €200--€450 80,000 km--150,000 km
● MODERATE
DISA valve failure (intake manifold flap) €80--€200 80,000 km--160,000 km
● MODERATE
Double VANOS oil seal wear €150--€350 100,000 km--180,000 km
○ MINOR
Valve cover gasket oil leak €100--€250 100,000 km--200,000 km

Models

N54 5

1 Series E82 2011--2012 1 Series E82 2008--2010 Z4 E89 2009--2016 3 Series E90 2006--2010 5 Series E60 2007--2010

M54 13

5 Series E39 2000--2003 3 Series E46 2001--2005 5 Series E60 2003--2007 5 Series E60 2003--2005 5 Series E39 2000--2003 Z4 E85 2003--2005 3 Series E46 2001--2005 5 Series E60 2003--2005 X5 E53 2000--2006 5 Series E39 2000--2003 Z4 E85 2003--2005 3 Series E46 2001--2005 Z3 E36/7 2000--2002
Full N54 Report Full M54 Report