0.9 TCe vs 1.0 TCe / SCe: which engine is more reliable?

According to our risk index, the 1.0 TCe / SCe carries less risk than the 0.9 TCe: 41/100 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 1.0 TCe / SCe has 1 documented serious fault, the main one being «LPG (ECO-G) system faults and tank recall».

Risk index

0.9 TCe

Moderate risk · 3 serious faults

Risk index

1.0 TCe / SCe

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

Reviewed on 27 September 202611 sources How 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 1.0 TCe / SCe reliable?

The 1.0 TCe/SCe (H4D/H4Dt) is a simply designed three-cylinder with reasonable reliability. Its most-cited fault is a noise or vibration from the turbo wastegate; the ECO-G (LPG) version adds its own gas-management faults and a 2023 recall over a risk of leaks and fire from the tank. An isolated case of a failed high-pressure pump is also documented, and no oil consumption pattern.^[3][4][5]

See the 4 of the 1.0 TCe / SCe faults

Side-by-side comparison

Comparison of 0.9 TCe and 1.0 TCe / SCe
Item	0.9 TCe	1.0 TCe / SCe
Technical data
Type	Engine	Engine
Fuel	Petrol	Petrol
Displacement	898 cm³	999 cm³
Timing	Chain	Chain
Power	90 hp	65–117 hp
Production	2012–2024^{[1][2][6][7][8]}	since 2019^[2][9]
Reliability
Risk index (what is it?)	49Moderate risk	41Moderate risk
Documented faults	5	4
Of high or critical severity	3	1
Worst severity	Critical severity	Critical severity
Main faults	High severity: Coolant leak at the thermostat housing Critical severity: Timing chain or tensioner failure High severity: Turbocharger wear or failure	Critical severity: LPG (ECO-G) system faults and tank recall Medium severity: Metallic noise or vibration from the turbo wastegate Medium severity: Failed high-pressure fuel pump (isolated case)
Most expensive documented repair	No reliable data	No reliable data
Which versions to buy
BuyRecommended versions	None	1.0 SCe 65/75 (H4D, 2019-present)^[3][10]
With cautionVersions to be cautious about	0.9 TCe 90 (H4Bt, 2012-2024)^[1][2]	1.0 TCe 90/100 (H4Dt, 2019-present)^[3][10] 1.0 TCe 110 (H4Dt, 2021-present)^[11] 1.0 ECO-G 100 (H4Dt + LPG, 2020-present)^[3][4][11] 1.0 DIG-T / IG-T 100-117 (HR10DDT, Nissan, 2017-present)^[5]
AvoidVersions to avoid	None	None

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

Cars that each one is fitted to

0.9 TCe

See the 8 models with the 0.9 TCe

1.0 TCe / SCe

See the 7 models with the 1.0 TCe / SCe

Other comparisons

With the 0.9 TCe

With the 1.0 TCe / SCe

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Sources

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

Fiabilité des 0.9 TCeFiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
Moteur H Renault-NissanWikipedia (francés) · Other source · consulted 27 September 2026 · in French
Fiabilité et pannes du Dacia Sandero 3Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
Dacia et Renault – nouveau rappel : fuite du réservoir GPL, risque d'incendie !Motorsactu · Motoring press · published 12 November 2023 · consulted 27 September 2026 · in French
Fiabilité et pannes du Nissan Juke 2Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
Mercedes-Benz M281 engineWikipedia (inglés) · Other source · consulted 27 September 2026
Renault ClioWikipedia (español) · Other source · consulted 27 September 2026 · in Spanish
Dacia SanderoWikipedia (español) · Other source · consulted 27 September 2026 · in Spanish
Nissan JukeWikipedia (inglés) · Other source · consulted 27 September 2026
Fiabilité et pannes de la Renault Clio 5Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
Fiabilité et pannes du Dacia JoggerFiches-auto.fr · Motoring press · consulted 27 September 2026 · in French