M132 (3B21) vs OM660 0.8 CDI

Side-by-side reliability comparison

Higher reliability score
OM660 0.8 CDI CAUTION 55/100
+3 points over M132 (3B21)
0 / 100
CAUTION M132 (3B21) Smart
0 / 100
CAUTION OM660 0.8 CDI Smart

Specifications

M132 (3B21)
OM660 0.8 CDI
Brand
Smart
Smart
Verdict
CAUTION
CAUTION
Reliability
52
55
Years
2007--2014
2000--2014
Displacement
999 cc
799 cc
Layout
I3
I3
Type
Petrol Turbo
Diesel
Power
61--84 hp
41--54 hp
Known Issues
4
2
Total Risk Cost
€1,500--€4,000
€700--€2,000

Character

M132 (3B21)

"Mitsubishi 3B21 heart. Turbo version is peppy but fragile. SAM unit is the real villain. Budget carefully."

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

M132 (3B21) 4

◆ CRITICAL
SAM unit failure (electrical) €500--€1,500 50,000 km--120,000 km
▲ HIGH
Clutch actuator wear (automated manual) €400--€1,000 50,000 km--100,000 km
▲ HIGH
Turbo actuator failure €400--€900 60,000 km--120,000 km
● MODERATE
Oil leak (valve cover / sump) €200--€600 40,000 km--100,000 km

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

Models

M132 (3B21) 6

ForTwo W451 2007--2014 ForTwo W451 2007--2014 ForTwo W451 2008--2014 ForTwo W451 2007--2014 ForFour W453 2015--2024 ForTwo W453 2014--2024

OM660 0.8 CDI 2

ForTwo W451 2007--2014 ForTwo W450 2000--2007
Full M132 (3B21) Report Full OM660 0.8 CDI Report