OM660 0.8 CDI vs M134 1.1
Side-by-side reliability comparison
Higher reliability score
M134 1.1
ACCEPTABLE
68/100
+13 points over OM660 0.8 CDI
0
/ 100
CAUTION
OM660 0.8 CDI
Smart
0
/ 100
ACCEPTABLE
M134 1.1
Smart
Specifications
OM660 0.8 CDI
M134 1.1
Brand
Smart
Smart
Verdict
CAUTION
ACCEPTABLE
Reliability
55
68
Years
2000--2014
2004--2006
Displacement
799 cc
1124 cc
Layout
I3
I3
Type
Diesel
Petrol Na
Power
41--54 hp
75 hp
Known Issues
2
1
Total Risk Cost
€700--€2,000
€0--€0
Character
OM660 0.8 CDI
"ForTwo 450/451. Smallest production diesel. Turbo failure on 54hp version. DPF on 451. EGR. Quirky but fragile. Specialist Smart workshops only."
M134 1.1
"ForFour 454 (W454). Mitsubishi 3-cyl. Short production run. Simple. No known major issues — too few on road. Parts from Mitsubishi Colt."
Issues Comparison
OM660 0.8 CDI 2
▲ HIGH
DPF (451 model)
▲ HIGH
Turbo failure (54hp CDI)
M134 1.1 1
○ MINOR
No significant issues