M132 (3B21) vs M134 1.1

Side-by-side reliability comparison

Higher reliability score
M134 1.1 ACCEPTABLE 68/100
+16 points over M132 (3B21)
0 / 100
CAUTION M132 (3B21) Smart
0 / 100
ACCEPTABLE M134 1.1 Smart

Specifications

M132 (3B21)
M134 1.1
Brand
Smart
Smart
Verdict
CAUTION
ACCEPTABLE
Reliability
52
68
Years
2007--2014
2004--2006
Displacement
999 cc
1124 cc
Layout
I3
I3
Type
Petrol Turbo
Petrol Na
Power
61--84 hp
75 hp
Known Issues
4
1
Total Risk Cost
€1,500--€4,000
€0--€0

Character

M132 (3B21)

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

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

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

M134 1.1 1

○ MINOR
No significant issues €0--€0 0 km--0 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

M134 1.1 1

ForFour W454 2004--2006
Full M132 (3B21) Report Full M134 1.1 Report