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0.9 TCe vs 1.2 8v: which engine is more reliable?

According to our risk index, the 1.2 8v carries less risk than the 0.9 TCe: 36/100 versus 49/100 (both moderate risk). The 0.9 TCe has 3 documented serious faults, the main one being «Coolant leak at the thermostat housing»; the 1.2 8v has 1 documented serious fault, the main one being «Damaged cylinder head gasket (coolant loss and overheating)».

Risk index

0.9 TCe

49

Moderate risk · 3 serious faults

Risk index

1.2 8v

36

Moderate risk · 1 serious fault

Lower risk

The index (0–100) weights the severity and frequency of the three most serious documented faults. How it is calculated

13 sourcesHow we work

Is the 0.9 TCe reliable?

The 0.9 TCe (H4Bt) is a three-cylinder turbo with a good reliability reputation, better than that of its sibling the 1.2 TCe: it does not share the same oil consumption or the same rate of chain problems. Its most-cited weak point is a coolant leak at the thermostat housing, which if ignored can end up damaging the head gasket; chain, turbo and lambda sensor cases appear less often.[1][2]

See the 5 of the 0.9 TCe faults

Is the 1.2 8v reliable?

The 1.2 8v (D7F) is a simple naturally aspirated engine of 54 to 60 hp, with a timing belt, which Renault fitted from 1996 to the Twingo, Clio II and Kangoo. No catastrophic failures are documented; what owner reviews mention most often are the sensors, the cylinder head gasket, the coil packs and the occasional oil drip.[3][4][5]

See the 5 of the 1.2 8v faults

Side-by-side comparison

Comparison of 0.9 TCe and 1.2 8v
0.9 TCe1.2 8v
Technical data
TypeEngineEngine
FuelPetrolPetrol
Displacement898 cm³1,149 cm³
TimingChainTiming belt (dry)
Power90 hp54–60 hp
Production2012–2024[1][2][6][7][8]1996–2012[9][10][11][12]
Reliability
Risk index (what is it?)49Moderate risk36Moderate risk
Documented faults55
Of high or critical severity31
Worst severityCritical severityHigh severity
Main faults
  1. High severity: Coolant leak at the thermostat housing
  2. Critical severity: Timing chain or tensioner failure
  3. High severity: Turbocharger wear or failure
  1. High severity: Damaged cylinder head gasket (coolant loss and overheating)
  2. Medium severity: Crankshaft sensor (TDC) and other engine sensor failure
  3. Medium severity: Ignition faults: coil packs, ignition harness and humidity
Most expensive documented repairNo reliable dataNo reliable data
Which versions to buy
BuyRecommended versionsNoneNone
With cautionVersions to be cautious about
  • 0.9 TCe 90 (H4Bt, 2012-2024)[1][2]
AvoidVersions to avoidNoneNone

Severity of each fault: green, low; amber, medium; red, high; dark red, critical. How we rate them

Cars that each one is fitted to

Other comparisons

With the 0.9 TCe

With the 1.2 8v

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Sources

Every fact on this page links to its source. If you find an error, let us know.

  1. Fiabilité des 0.9 TCeFiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
  2. Moteur H Renault-NissanWikipedia (francés) · Other source · consulted 27 September 2026 · in French
  3. Fiabilité Renault Clio 2 : pannes et avis des propriétairesFiches-auto.fr · Motoring press · consulted 2 November 2026 · in French
  4. Fiabilité Renault Twingo 1993-2006 : pannes et avis des propriétairesFiches-auto.fr · Motoring press · consulted 2 November 2026 · in French
  5. Fiabilité Renault Twingo 2 (2007-2014) : pannes et avis des propriétairesFiches-auto.fr · Motoring press · consulted 2 November 2026 · in French
  6. Mercedes-Benz M281 engineWikipedia (inglés) · Other source · consulted 27 September 2026
  7. Renault ClioWikipedia (español) · Other source · consulted 27 September 2026 · in Spanish
  8. Dacia SanderoWikipedia (español) · Other source · consulted 27 September 2026 · in Spanish
  9. Moteur D (Renault)Wikipédia (francés) · Other source · consulted 2 November 2026 · in French
  10. Renault Clio IIWikipedia (alemán) · Other source · consulted 2 November 2026 · in German
  11. Renault TwingoWikipedia (alemán) · Other source · consulted 2 November 2026 · in German
  12. Renault Twingo IWikipedia (alemán) · Other source · consulted 2 November 2026 · in German
  13. Renault Twingo (ab 1993): Schwachstellen laut TÜV-AuswertungAUTO BILD · Motoring press · published February 2002 · consulted 2 November 2026 · in German