M132 (3B21) vs M135 1.3/1.5

Side-by-side reliability comparison

Higher reliability score
M135 1.3/1.5 ACCEPTABLE 72/100
+20 points over M132 (3B21)
0 / 100
CAUTION M132 (3B21) Smart
0 / 100
ACCEPTABLE M135 1.3/1.5 Smart

Specifications

M132 (3B21)
M135 1.3/1.5
Brand
Smart
Smart
Verdict
CAUTION
ACCEPTABLE
Reliability
52
72
Years
2007--2014
2014--2019
Displacement
999 cc
1332 cc
Layout
I3
I4
Type
Petrol Turbo
Petrol Na
Power
61--84 hp
71--109 hp
Known Issues
4
2
Total Risk Cost
€1,500--€4,000
€300--€1,200

Character

M132 (3B21)

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

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

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

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

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

M135 1.3/1.5 2

ForFour W454 2004--2006 ForFour W454 2005--2006
Full M132 (3B21) Report Full M135 1.3/1.5 Report