OM660 0.8 CDI vs M135 1.3/1.5

Side-by-side reliability comparison

Higher reliability score
M135 1.3/1.5 ACCEPTABLE 72/100
+17 points over OM660 0.8 CDI
0 / 100
CAUTION OM660 0.8 CDI Smart
0 / 100
ACCEPTABLE M135 1.3/1.5 Smart

Specifications

OM660 0.8 CDI
M135 1.3/1.5
Brand
Smart
Smart
Verdict
CAUTION
ACCEPTABLE
Reliability
55
72
Years
2000--2014
2014--2019
Displacement
799 cc
1332 cc
Layout
I3
I4
Type
Diesel
Petrol Na
Power
41--54 hp
71--109 hp
Known Issues
2
2
Total Risk Cost
€700--€2,000
€300--€1,200

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."

M135 1.3/1.5

"ForTwo/ForFour 453. Mitsubishi 3A9 engine (Mirage/Space Star). NA 1.0 (71hp) and 1.3 (109hp). Brabus 1.5 turbo (177hp) rare. Simple, reliable for what it is. Timing chain. CVT on ForTwo can be jerky. Better than old M132."

Issues Comparison

OM660 0.8 CDI 2

▲ HIGH
DPF (451 model) €300--€1,000 40,000 km--80,000 km
▲ HIGH
Turbo failure (54hp CDI) €400--€1,000 60,000 km--120,000 km

M135 1.3/1.5 2

● MODERATE
CVT jerkiness (ForTwo) €0--€500 40,000 km--100,000 km
● MODERATE
Timing chain tensioner wear €300--€700 100,000 km--180,000 km

Models

OM660 0.8 CDI 2

ForTwo W451 2007--2014 ForTwo W450 2000--2007

M135 1.3/1.5 2

ForFour W454 2004--2006 ForFour W454 2005--2006
Full OM660 0.8 CDI Report Full M135 1.3/1.5 Report