H4B (SCe 1.0) vs OM660 0.8 CDI

Side-by-side reliability comparison

Higher reliability score
H4B (SCe 1.0) ACCEPTABLE 72/100
+17 points over OM660 0.8 CDI
0 / 100
ACCEPTABLE H4B (SCe 1.0) Smart
0 / 100
CAUTION OM660 0.8 CDI Smart

Specifications

H4B (SCe 1.0)
OM660 0.8 CDI
Brand
Smart
Smart
Verdict
ACCEPTABLE
CAUTION
Reliability
72
55
Years
2014--present
2000--2014
Displacement
999 cc
799 cc
Layout
I3
I3
Type
Petrol Na
Diesel
Power
71 hp
41--54 hp
Known Issues
3
2
Total Risk Cost
€450--€1,150
€700--€2,000

Character

H4B (SCe 1.0)

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

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

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

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

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

OM660 0.8 CDI 2

ForTwo W451 2007--2014 ForTwo W450 2000--2007
Full H4B (SCe 1.0) Report Full OM660 0.8 CDI Report