OM648 vs OM654
Side-by-side reliability comparison
Higher reliability score
OM648
BEST
90/100
+5 points over OM654
0
/ 100
BEST
OM648
Mercedes-Benz
0
/ 100
BEST
OM654
Mercedes-Benz
Specifications
OM648
OM654
Brand
Mercedes-Benz
Mercedes-Benz
Verdict
BEST
BEST
Reliability
90
85
Years
2002--2006
2016--present
Displacement
3222 cc
1950 cc
Layout
I6
I4
Type
Diesel
Diesel
Power
204 hp
150--245 hp
Known Issues
2
2
Total Risk Cost
€450--€1,100
€500--€1,500
Character
OM648
"Modern OM606 successor. Excellent highway cruiser. Strong torque."
OM654
"Best modern MB diesel. Aluminium block, low friction. Long-distance champion."
Issues Comparison
OM648 2
● MODERATE
EGR valve fouling (city use)
○ MINOR
Glow plugs + injector seals
OM654 2
○ MINOR
DPF — better than older MB diesels but still diesel
○ MINOR
Minor EGR fouling (best-in-class but not immune)
Models
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