N52 vs M50/M52

Side-by-side reliability comparison

Higher reliability score
M50/M52 BEST 95/100
+5 points over N52
0 / 100
BEST N52 BMW
0 / 100
BEST M50/M52 BMW

Specifications

N52
M50/M52
Brand
BMW
BMW
Verdict
BEST
BEST
Reliability
90
95
Years
2004--2015
1990--2000
Displacement
2996 cc
2494 cc
Layout
I6
I6
Type
Petrol Na
Petrol Na
Power
190--272 hp
150--170 hp
Known Issues
3
3
Total Risk Cost
€250--€900
€330--€850

Character

N52

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

M50/M52

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

Issues Comparison

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--∞

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

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

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 N52 Report Full M50/M52 Report