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Mitsubishi PHEV vs 1.0 SCe (B4D): which engine is more reliable?

According to our risk index, the 1.0 SCe (B4D) carries less risk than the Mitsubishi PHEV: 23/100 versus 24/100 (both low 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 1.0 SCe (B4D) has no documented serious faults.

Risk index

Mitsubishi PHEV

24

Low risk · 2 serious faults

Risk index

1.0 SCe (B4D)

23

Low risk · 0 serious faults

Lower risk

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

14 sourcesHow 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 1.0 SCe (B4D) reliable?

The 1.0 SCe (B4D) is a simple, low-power (70-75 hp) naturally aspirated three-cylinder engine, with no serious or systemic faults documented. Its most cited issues are a clutch that can slip or judder when cold and, more occasionally on the Dacia Sandero II, higher-than-normal oil consumption; there is no pattern of faults in the chain-driven timing.[6][7][8]

See the 4 of the 1.0 SCe (B4D) faults

Side-by-side comparison

Comparison of Mitsubishi PHEV and 1.0 SCe (B4D)
Mitsubishi PHEV1.0 SCe (B4D)
Technical data
TypeEngineEngine
FuelPetrolPetrol
Displacement—999 cm³
TimingChainChain
Power163–224 hp70–75 hp
Productionsince 2013[9][10][11]2014–2024[12][13]
Reliability
Risk index (what is it?)24Low risk23Low risk
Documented faults54
Of high or critical severity20
Worst severityHigh severityMedium severity
Main faults
  1. Medium severity: Loss of traction battery (high-voltage) capacity
  2. Medium severity: Spark plugs and petrol engine software on the Outlander PHEV (campaign R3033111)
  3. High severity: Corroded air flow sensor: the petrol engine does not start to charge the battery
  1. Medium severity: Clutch that slips or judders, especially when cold
  2. Medium severity: Jerking, rough idle or warning light from sensors and ignition coils
  3. Low severity: Higher-than-normal oil consumption (especially on the Dacia Sandero II)
Most expensive documented repairNo reliable dataNo 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]
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

Mitsubishi PHEV

1.0 SCe (B4D)

Other comparisons

With the Mitsubishi PHEV

With the 1.0 SCe (B4D)

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Sources

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

  1. 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
  2. Mitsubishi Outlander (II & III) – Bekannte Probleme und MängelGebrauchtwagenberater (Alemania) · Motoring press · published 2 March 2023 · consulted 8 October 2026 · in German
  3. Baterías de híbrido enchufable: cuándo habrá que sustituirlas (Outlander PHEV)Autofácil · Motoring press · published 7 May 2020 · consulted 8 October 2026 · in Spanish
  4. DVSA – base de llamadas a revisiónDVSA (Reino Unido) · Other source · consulted 8 October 2026
  5. 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
  6. Fiabilité et pannes de la Dacia Sandero 2Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
  7. Fiabilité et pannes du Dacia Logan 2Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
  8. Fiabilité et pannes de la Renault Twingo 3Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
  9. Mitsubishi Outlander PHEVWikipedia (inglés) · Other source · consulted 8 October 2026
  10. Mitsubishi OutlanderWikipedia (alemán) · Other source · consulted 8 October 2026 · in German
  11. Mitsubishi 4B1 engineWikipedia (inglés) · Other source · consulted 8 October 2026
  12. List of Renault enginesWikipedia (inglés) · Other source · consulted 27 September 2026
  13. Renault TwingoWikipedia (inglés) · Other source · consulted 27 September 2026
  14. 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