H4B (SCe 1.0) vs M132 (3B21)

Side-by-side reliability comparison

Higher reliability score
H4B (SCe 1.0) ACCEPTABLE 72/100
+20 points over M132 (3B21)
0 / 100
ACCEPTABLE H4B (SCe 1.0) Smart
0 / 100
CAUTION M132 (3B21) Smart

Specifications

H4B (SCe 1.0)
M132 (3B21)
Brand
Smart
Smart
Verdict
ACCEPTABLE
CAUTION
Reliability
72
52
Years
2014--present
2007--2014
Displacement
999 cc
999 cc
Layout
I3
I3
Type
Petrol Na
Petrol Turbo
Power
71 hp
61--84 hp
Known Issues
3
4
Total Risk Cost
€450--€1,150
€1,500--€4,000

Character

H4B (SCe 1.0)

"Renault H4B in a Smart box. Slow but honest. Simple 3-cyl, no turbo drama. Perfect city runabout."

M132 (3B21)

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

Issues Comparison

H4B (SCe 1.0) 3

● MODERATE
Thermostat failure €200--€450 50,000 km--100,000 km
○ MINOR
Ignition coil failure €100--€300 40,000 km--80,000 km
○ MINOR
Engine mount vibration €150--€400 60,000 km--120,000 km

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

Models

H4B (SCe 1.0) 3

ForFour 1.0 W453 2014--present Hatchback ForTwo 1.0 W453 2014--present Hatchback ForTwo Cabrio W453 2016--present Convertible

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
Full H4B (SCe 1.0) Report Full M132 (3B21) Report