M54 vs N52

Side-by-side reliability comparison

Higher reliability score
M54 BEST 93/100
+3 points over N52
0 / 100
BEST M54 BMW
0 / 100
BEST N52 BMW

Specifications

M54
N52
Brand
BMW
BMW
Verdict
BEST
BEST
Reliability
93
90
Years
2000--2006
2004--2015
Displacement
2979 cc
2996 cc
Layout
I6
I6
Type
Petrol Na
Petrol Na
Power
170--231 hp
190--272 hp
Known Issues
4
3
Total Risk Cost
€530--€1,250
€250--€900

Character

M54

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

N52

"Last great NA six. Lighter (magnesium block), smoother, higher-revving than M54. 250k+ km."

Issues Comparison

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

N52 3

● MODERATE
Coolant expansion tank / hose failure €100--€300 80,000 km--150,000 km
● MODERATE
VANOS solenoid / oil feed failure €150--€400 80,000 km--160,000 km
○ MINOR
Hydraulic lifter tick on cold start €0--€200 60,000 km--∞

Models

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

N52 9

6 Series E63 2004--2010 5 Series E60 2005--2007 5 Series E60 2005--2007 3 Series E90 2005--2007 Z4 E85 2006--2008 5 Series E60 2005--2007 X5 E70 2007--2010 3 Series E90 2005--2007 1 Series E87 2005--2011
Full M54 Report Full N52 Report