M50 vs M54

Side-by-side reliability comparison

Higher reliability score
M54 BEST 93/100
+5 points over M50
0 / 100
BEST M50 BMW
0 / 100
BEST M54 BMW

Specifications

M50
M54
Brand
BMW
BMW
Verdict
BEST
BEST
Reliability
88
93
Years
1990--1996
2000--2006
Displacement
2494 cc
2979 cc
Layout
I6
I6
Type
Petrol Na
Petrol Na
Power
150--192 hp
170--231 hp
Known Issues
2
4
Total Risk Cost
€400--€1,100
€530--€1,250

Character

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."

M54

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

Issues Comparison

M50 2

▲ HIGH
Water pump plastic impeller failure €200--€500 60,000 km--120,000 km
● MODERATE
VANOS unit wear (M50TU) €200--€600 100,000 km--200,000 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

M50 0

No models listed.

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 M50 Report Full M54 Report