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0.8 / 1.0 / 1.2 S-TEC vs Mitsubishi PHEV: which engine is more reliable?

According to our risk index, the 0.8 / 1.0 / 1.2 S-TEC carries less risk than the Mitsubishi PHEV: 18/100 versus 24/100 (both low risk). The 0.8 / 1.0 / 1.2 S-TEC has no documented serious faults; 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».

Risk index

0.8 / 1.0 / 1.2 S-TEC

18

Low risk · 0 serious faults

Lower risk

Risk index

Mitsubishi PHEV

24

Low risk · 2 serious faults

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

19 sourcesHow we work

Is the 0.8 / 1.0 / 1.2 S-TEC reliable?

The GM Daewoo S-TEC engines (0.8, 1.0 and 1.2 naturally aspirated, low power) power the Matiz, Spark, Aveo 1.2, Beat and Sail. The sources consulted document only minor and cheap faults, such as oil leaks and ignition faults on the Matiz, and we have found no structural engine fault.[1][2][3]

See the 2 of the 0.8 / 1.0 / 1.2 S-TEC faults

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.[4][5][6][7][8]

See the 5 of the Mitsubishi PHEV faults

Side-by-side comparison

Comparison of 0.8 / 1.0 / 1.2 S-TEC and Mitsubishi PHEV
0.8 / 1.0 / 1.2 S-TECMitsubishi PHEV
Technical data
TypeEngineEngine
FuelPetrolPetrol
Displacement——
TimingTiming belt (dry)Chain
Power52–84 hp163–224 hp
Production2002–2022[9][10][11][12][13]since 2013[14][15][16]
Reliability
Risk index (what is it?)18Low risk24Low risk
Documented faults25
Of high or critical severity02
Worst severityMedium severityHigh severity
Main faults
  1. Medium severity: Ignition system faults (high-tension leads and modules)
  2. Low severity: Oil leaks from the rocker cover and sump
  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
Most expensive documented repairNo reliable dataNo reliable data
Which versions to buy
BuyRecommended versions
  • 1.2 S-TEC and S-TEC II 72-84 hp (Aveo T200/T250, 2005-2011)[17][18]
  • 1.0 and 1.2 S-TEC II DOHC 16v (Spark M300, Beat and Sail, 2010-2022)[2][3]
  • 2.4 Eclipse Cross PHEV (4B12, 13.8 kWh battery, 2021-2024)[7][8]
With cautionVersions to be cautious about
  • 0.8 and 1.0 S-TEC SOHC (Matiz/Spark M200, 2005-2009)[1][13]
  • 2.0 Outlander PHEV (4B11, 12 kWh battery, 2013-2018)[6][7][19]
  • 2.4 Outlander PHEV (4B12, 13.8 kWh battery, 2018-2021)[4][5][6]
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 0.8 / 1.0 / 1.2 S-TEC

With the Mitsubishi PHEV

Compare other engines

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Sources

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

  1. Czy warto kupić: używany Daewoo / FSO Matiz (od 1998 do 2008)AutoCentrum.pl · Motoring press · published 22 August 2013 · consulted 2 November 2026 · in another language
  2. Chevrolet Spark hatchback reviewAuto Express · Motoring press · published October 2013 · consulted 2 November 2026
  3. Fiabilité Chevrolet Spark (2009-2015): pannes, rappels et témoignagesFiches-auto.fr · Owners' forum · consulted 2 November 2026 · in French
  4. 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
  5. Mitsubishi Outlander (II & III) – Bekannte Probleme und MängelGebrauchtwagenberater (Alemania) · Motoring press · published 2 March 2023 · consulted 8 October 2026 · in German
  6. Baterías de híbrido enchufable: cuándo habrá que sustituirlas (Outlander PHEV)Autofácil · Motoring press · published 7 May 2020 · consulted 8 October 2026 · in Spanish
  7. DVSA – base de llamadas a revisiónDVSA (Reino Unido) · Other source · consulted 8 October 2026
  8. 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
  9. Daewoo S-TEC engineWikipedia · Other source · consulted 2 November 2026
  10. Chevrolet SparkWikipedia · Other source · consulted 2 November 2026
  11. Chevrolet Aveo (T200)Wikipedia · Other source · consulted 2 November 2026
  12. Chevrolet AveoWikipedia (de) · Other source · consulted 2 November 2026 · in German
  13. Chevrolet MatizWikipedia (de) · Other source · consulted 2 November 2026 · in German
  14. Mitsubishi Outlander PHEVWikipedia (inglés) · Other source · consulted 8 October 2026
  15. Mitsubishi OutlanderWikipedia (alemán) · Other source · consulted 8 October 2026 · in German
  16. Mitsubishi 4B1 engineWikipedia (inglés) · Other source · consulted 8 October 2026
  17. Czy warto kupić: używany Chevrolet Aveo (od 2002 do 2011)AutoCentrum.pl · Motoring press · published 5 March 2013 · consulted 2 November 2026 · in another language
  18. Używany Chevrolet Aveo T200/T250 - typowe awarie i problemyWP Autokult · Motoring press · published 28 January 2012 · consulted 2 November 2026 · in another language
  19. 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