N13 vs M50
Side-by-side reliability comparison
Higher reliability score
M50
BEST
88/100
+33 points over N13
0
/ 100
CAUTION
N13
BMW
0
/ 100
BEST
M50
BMW
Specifications
N13
M50
Brand
BMW
BMW
Verdict
CAUTION
BEST
Reliability
55
88
Years
2011--2015
1990--1996
Displacement
1598 cc
2494 cc
Layout
I4
I6
Type
Petrol Turbo
Petrol Na
Power
136--170 hp
150--192 hp
Known Issues
3
2
Total Risk Cost
€1,900--€4,300
€400--€1,100
Character
N13
"Prince engine (BMW/PSA). Timing chain issues. Adequate power but questionable long-term."
M50
"Cast iron block legend. One of BMW's most reliable ever. M50TU added single VANOS. Strong internals handle 300k+ km. Cooling plastics only weakness."
Issues Comparison
N13 3
◆ CRITICAL
Timing chain + tensioner — notorious from 50k miles
▲ HIGH
Turbo oil feed line blockage
● MODERATE
Carbon buildup on intake valves
M50 2
▲ HIGH
Water pump plastic impeller failure
● MODERATE
VANOS unit wear (M50TU)