Mitsubishi PHEV vs 0.9 TCe: which engine is more reliable?

According to our risk index, the Mitsubishi PHEV carries less risk than the 0.9 TCe: 24/100 (low risk) versus 49/100 (moderate risk). The Mitsubishi PHEV has 2 documented serious faults, the main one being «Corroded air flow sensor: the petrol engine does not start to charge the battery»; the 0.9 TCe has 3 documented serious faults, the main one being «Coolant leak at the thermostat housing».

Risk index

Mitsubishi PHEV

Low risk · 2 serious faults

Lower risk

Risk index

0.9 TCe

Moderate risk · 3 serious faults

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

Reviewed on 8 October 202614 sources How we work

Is the Mitsubishi PHEV reliable?

Yes, with caveats: the OCU ranks the Outlander PHEV first for reliability among used plug-in hybrids. What is documented are isolated campaigns (spark plugs and software, air flow sensor, fuel hose) and a possible loss of battery capacity, cited by one source and one study without figures. The Eclipse Cross PHEV, which uses the same system, has no documented faults of its own.^{[1][2][3][4][5]}

See the 5 of the Mitsubishi PHEV faults

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.^[6][7]

See the 5 of the 0.9 TCe faults

Side-by-side comparison

Comparison of Mitsubishi PHEV and 0.9 TCe
Item	Mitsubishi PHEV	0.9 TCe
Technical data
Type	Engine	Engine
Fuel	Petrol	Petrol
Displacement	—	898 cm³
Timing	Chain	Chain
Power	163–224 hp	90 hp
Production	since 2013^[8][9][10]	2012–2024^{[6][7][11][12][13]}
Reliability
Risk index (what is it?)	24Low risk	49Moderate risk
Documented faults	5	5
Of high or critical severity	2	3
Worst severity	High severity	Critical severity
Main faults	Medium severity: Loss of traction battery (high-voltage) capacity Medium severity: Spark plugs and petrol engine software on the Outlander PHEV (campaign R3033111) High severity: Corroded air flow sensor: the petrol engine does not start to charge the battery	High severity: Coolant leak at the thermostat housing Critical severity: Timing chain or tensioner failure High severity: Turbocharger wear or failure
Most expensive documented repair	No reliable data	No reliable data
Which versions to buy
BuyRecommended versions	2.4 Eclipse Cross PHEV (4B12, 13.8 kWh battery, 2021-2024)^[4][5]	None
With cautionVersions to be cautious about	2.0 Outlander PHEV (4B11, 12 kWh battery, 2013-2018)^[3][4][14] 2.4 Outlander PHEV (4B12, 13.8 kWh battery, 2018-2021)^[1][2][3]	0.9 TCe 90 (H4Bt, 2012-2024)^[6][7]
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

Mitsubishi PHEV

0.9 TCe

See the 8 models with the 0.9 TCe

Other comparisons

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With the 0.9 TCe

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Sources

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

Mitsubishi Outlander PHEV, el híbrido enchufable de segunda mano más fiable según la OCUHíbridos y Eléctricos · Motoring press · published 14 May 2024 · consulted 8 October 2026 · in Spanish
Mitsubishi Outlander (II & III) – Bekannte Probleme und MängelGebrauchtwagenberater (Alemania) · Motoring press · published 2 March 2023 · consulted 8 October 2026 · in German
Baterías de híbrido enchufable: cuándo habrá que sustituirlas (Outlander PHEV)Autofácil · Motoring press · published 7 May 2020 · consulted 8 October 2026 · in Spanish
DVSA – base de llamadas a revisiónDVSA (Reino Unido) · Other source · consulted 8 October 2026
El Mitsubishi Eclipse Cross PHEV sí llegará a Europa, incluida España, en 2021Híbridos y Eléctricos · Motoring press · published 18 October 2020 · consulted 8 October 2026 · in Spanish
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
Mitsubishi Outlander PHEVWikipedia (inglés) · Other source · consulted 8 October 2026
Mitsubishi OutlanderWikipedia (alemán) · Other source · consulted 8 October 2026 · in German
Mitsubishi 4B1 engineWikipedia (inglés) · Other source · consulted 8 October 2026
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
Mitsubishi Outlander PHEV (2013 – 2014): alerta A12/1947/19 (sensor de caudal de aire)car-recalls.eu (alertas Safety Gate / RAPEX) · Other source · published 13 December 2019 · consulted 8 October 2026