M134 1.1 vs OM660 0.8 CDI
Side-by-side reliability comparison
Higher reliability score
M134 1.1
ACCEPTABLE
68/100
+13 points over OM660 0.8 CDI
0
/ 100
ACCEPTABLE
M134 1.1
Smart
0
/ 100
CAUTION
OM660 0.8 CDI
Smart
Specifications
M134 1.1
OM660 0.8 CDI
Brand
Smart
Smart
Verdict
ACCEPTABLE
CAUTION
Reliability
68
55
Years
2004--2006
2000--2014
Displacement
1124 cc
799 cc
Layout
I3
I3
Type
Petrol Na
Diesel
Power
75 hp
41--54 hp
Known Issues
1
2
Total Risk Cost
€0--€0
€700--€2,000
Character
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."
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."
Issues Comparison
M134 1.1 1
○ MINOR
No significant issues
OM660 0.8 CDI 2
▲ HIGH
DPF (451 model)
▲ HIGH
Turbo failure (54hp CDI)