OM611 vs OM654
Side-by-side reliability comparison
Higher reliability score
OM654
BEST
85/100
+13 points over OM611
0
/ 100
ACCEPTABLE
OM611
Mercedes-Benz
0
/ 100
BEST
OM654
Mercedes-Benz
Specifications
OM611
OM654
Brand
Mercedes-Benz
Mercedes-Benz
Verdict
ACCEPTABLE
BEST
Reliability
72
85
Years
1998--2006
2016--present
Displacement
2148 cc
1950 cc
Layout
I4
I4
Type
Diesel
Diesel
Power
102--143 hp
150--245 hp
Known Issues
2
2
Total Risk Cost
€600--€1,600
€500--€1,500
Character
OM611
"W203/W210 C/E 200/220 CDI. Common rail diesel. Injector seal leak ('black death') if neglected. Turbo actuator failure. Inlet manifold swirl flaps. Fundamentally strong if maintained."
OM654
"Best modern MB diesel. Aluminium block, low friction. Long-distance champion."
Issues Comparison
OM611 2
▲ HIGH
Injector seal leak (Black Death)
● MODERATE
Turbo actuator failure
OM654 2
○ MINOR
DPF — better than older MB diesels but still diesel
○ MINOR
Minor EGR fouling (best-in-class but not immune)
Models
OM611 0
No models listed.
OM654 47
B-Class
A-Class
GLA
A-Class
C-Class
C-Class
GLC
E-Class
GLC
E-Class
GLE
E-Class
C-Class
C-Class
GLC
GLC
E-Class
C-Class
E-Class
GLC
C-Class
C-Class
GLC
E-Class
CLA
A-Class
CLA
B-Class
GLA
GLA
A-Class
E-Class
S-Class
GLE
E-Class
G-Class
E-Class
G-Class
G-Class
S-Class
S-Class
S-Class
GLE
S-Class
C 220d Wagon
E 220d Wagon
GLC 220d Coupe