N54 vs M50/M52

Side-by-side reliability comparison

Higher reliability score
M50/M52 BEST 95/100
+63 points over N54
0 / 100
AVOID N54 BMW
0 / 100
BEST M50/M52 BMW

Specifications

N54
M50/M52
Brand
BMW
BMW
Verdict
AVOID
BEST
Reliability
32
95
Years
2006--2010
1990--2000
Displacement
2979 cc
2494 cc
Layout
I6
I6
Type
Petrol Turbo
Petrol Na
Power
306 hp
150--170 hp
Known Issues
4
3
Total Risk Cost
€4,500--€10,700
€330--€850

Character

N54

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

M50/M52

"Smooth, linear, bulletproof. Classic BMW feel. Simple maintenance. Cheap parts."

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

M50/M52 3

● MODERATE
Cooling system plastics (tank, housing, impeller) €150--€350 100,000 km--180,000 km
○ MINOR
VANOS oil seal wear (M52 only) €80--€200 120,000 km--200,000 km
○ MINOR
Valve cover / oil pan gasket leaks €100--€300 150,000 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

M50/M52 12

3 Series E36 1990--1994 3 Series E36 1990--1995 3 Series E36 1994--1999 5 Series E39 1996--2000 3 Series E46 1998--2001 5 Series E39 1996--2000 3 Series E36 1995--1999 3 Series E46 1998--2000 5 Series E39 1996--2000 Z3 E36/7 1997--2000 3 Series E36 1995--1999 3 Series E46 1998--2000
Full N54 Report Full M50/M52 Report