S50/S54 vs M54

Side-by-side reliability comparison

Higher reliability score
M54 BEST 93/100
+15 points over S50/S54
0 / 100
BUY S50/S54 BMW
0 / 100
BEST M54 BMW

Specifications

S50/S54
M54
Brand
BMW
BMW
Verdict
BUY
BEST
Reliability
78
93
Years
1992--2006
2000--2006
Displacement
3246 cc
2979 cc
Layout
I6
I6
Type
Petrol Na
Petrol Na
Power
286--343 hp
170--231 hp
Known Issues
2
4
Total Risk Cost
€2,500--€7,500
€530--€1,250

Character

S50/S54

"E36 M3 (S50) and E46 M3 (S54). High-revving NA legends. S50B32 is bulletproof. S54 has rod bearing and VANOS concerns but iconic. Preventive rod bearing replacement recommended on S54."

M54

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

Issues Comparison

S50/S54 2

◆ CRITICAL
Rod bearing wear (S54) €2,000--€6,000 80,000 km--150,000 km
▲ HIGH
VANOS bolt failure (S54 recall) €500--€1,500 60,000 km--120,000 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

S50/S54 3

M3 E36 1992--1996 M3 E36 1996--1999 M3 E46 2000--2006

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 S50/S54 Report Full M54 Report