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1.2 PureTech vs 1.0 and 1.4 Boosterjet: which engine is more reliable?

According to our risk index, the 1.0 and 1.4 Boosterjet carries less risk than the 1.2 PureTech: 6/100 (low risk) versus 96/100 (very high risk). The 1.2 PureTech has 7 documented serious faults, the main one being «Oil-bath timing belt degradation»; the 1.0 and 1.4 Boosterjet has no documented serious faults.

Risk index

1.2 PureTech

96

Very high risk · 7 serious faults

Risk index

1.0 and 1.4 Boosterjet

6

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

27 sourcesHow we work

Is the 1.2 PureTech reliable?

The belt-driven 1.2 PureTech (2012-2025) has a problem acknowledged by Stellantis: the oil-bath timing belt can degrade, block lubrication and, on the 2013-2018 turbos, damage the brake servo vacuum pump. The 2014-2023 turbos can also use oil. Stellantis offers 10 years or 180,000 km of cover; the chain-driven generation (from 2023) no longer uses that belt.[1][2][3][4][5]

See the 7 of the 1.2 PureTech faults

Is the 1.0 and 1.4 Boosterjet reliable?

The Suzuki Boosterjet (1.0 K10C and 1.4 K14C/K14D) is a turbocharged direct-injection petrol engine with a timing chain, fitted since 2015 to the Vitara, S-Cross, Swift Sport and Baleno, with a 48 V mild-hybrid variant of the 1.4 since 2020. German TÜV inspection reports and the workshops we consulted rate its reliability as high: no widespread fault with the chain, oil, fuel pump or mild-hybrid system is documented.[6][7][8][9][10]

See the 4 of the 1.0 and 1.4 Boosterjet faults

Side-by-side comparison

Comparison of 1.2 PureTech and 1.0 and 1.4 Boosterjet
1.2 PureTech1.0 and 1.4 Boosterjet
Technical data
TypeEngineEngine
FuelPetrolPetrol
Displacement1,199 cm³—
TimingWet belt (belt-in-oil)Chain
Power68–155 hp110–140 hp
Productionsince 2012[11][12]since 2015[6][13][14][15]
Reliability
Risk index (what is it?)96Very high risk6Low risk
Documented faults74
Of high or critical severity70
Worst severityCritical severityLow severity
Main faults
  1. Critical severity: Oil-bath timing belt degradation
  2. Critical severity: Loss of braking assistance from vacuum pump damage
  3. High severity: Excessive oil consumption from carbon on the piston rings or oil separator failure
  1. Low severity: Timing chain: no documented pattern of failures
  2. Low severity: Oil consumption: no documented pattern
  3. Low severity: Direct injection and fuel pump: no documented faults or recalls
Most expensive documented repairup to €1,200Oil-bath timing belt degradationPublished figure[2][16][17][18]No reliable data
Which versions to buy
BuyRecommended versionsNone
  • 1.0 Boosterjet 110-112 hp (K10C, three-cylinder, 2015-present)[7][8][19][20]
  • 1.4 Boosterjet 140 hp (K14C, non-hybrid, 2015-2020 in Europe)[7][8][21]
  • 1.4 Boosterjet Mild Hybrid 129 hp (K14D, 48V SHVS, since 2020)[14][15]
With cautionVersions to be cautious about
  • 1.2 VTi / PureTech naturally aspirated 68-83 hp (EB2, EB2F, EB2FA..., from 2012)[1][3][22]
  • 1.2 PureTech turbo 110 and 130 hp Euro 6.1 (EB2DT, EB2DTS, 2013-2018)[2][3][4][23]
  • 1.2 PureTech turbo 100-155 hp Euro 6.2/6.3/6d (2018-2022)[2][4][24]
  • 1.2 PureTech turbo 100 and 130 hp with revised belt (2022-2025)[1][2][25]
  • 1.2 Turbo / Hybrid third generation with chain, 100-145 hp (from 2023)[26][27]
None
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

1.2 PureTech

See the 50 models with the 1.2 PureTech

1.0 and 1.4 Boosterjet

See the 12 models with the 1.0 and 1.4 Boosterjet

Other comparisons

With the 1.2 PureTech

With the 1.0 and 1.4 Boosterjet

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. Stellantis ofrece medidas a los afectados por los motores PureTech tras miles de demandaskm77 · Motoring press · published 28 November 2025 · consulted 26 September 2026 · in Spanish
  2. Moteur PureTech. Stellantis généralise sa garantie de 10 ans ou 180 000 kmL'argus · Motoring press · published 26 May 2025 · consulted 26 September 2026 · in French
  3. Safety Gate, alerta A12/01505/20: Peugeot 208, 308, 2008, 3008, 5008 y Partner (copia en PDF)Comisión Europea – Safety Gate · Official body · published November 2020 · consulted 26 September 2026
  4. Fiabilité Stellantis 1.2 PureTech. De nouvelles solutions contre la consommation d'huileL'argus · Motoring press · published 23 June 2024 · consulted 26 September 2026 · in French
  5. Stellantis 1.2 Puretech engine: list of belt and chain modelsItalPassion · Motoring press · published 2 February 2025 · consulted 26 September 2026
  6. Suzuki K engineWikipedia · Other source · consulted 27 September 2026
  7. Gebrauchtwagen-Check: Grundsätzlich gut: Der Suzuki Vitara beim TÜVVolksstimme (dpa) · General press · published January 2026 · consulted 27 September 2026 · in German
  8. Suzuki Swift als Gebrauchtwagen: Diese Punkte beanstandet der TÜV häufigT-Online · General press · published October 2025 · consulted 27 September 2026 · in German
  9. Los mecánicos recomiendan el Suzuki Vitara porque no presume de moderno, sino de sencillo y baratoEl Nacional · General press · published September 2026 · consulted 27 September 2026 · in Spanish
  10. Test complet Suzuki VitaraFiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
  11. Moteur EBWikipédia (francés) · Other source · consulted 26 September 2026 · in French
  12. El Peugeot 208 estrena motor Turbo 100 con distribución por cadenaDiariomotor · Motoring press · published 16 March 2026 · consulted 26 September 2026 · in Spanish
  13. Suzuki motor KWikipedia · Other source · consulted 27 September 2026 · in Spanish
  14. Suzuki Swift Sport, Vitara y S-Cross: nuevas versiones micro-híbridas de 48VAutopista.es · Motoring press · published 16 December 2019 · consulted 27 September 2026 · in Spanish
  15. Suzuki S-Cross 1.4 Boosterjet Mild Hybrid 2020: precios y datos del nuevo SUVAutopista.es · Motoring press · published 12 March 2020 · consulted 27 September 2026 · in Spanish
  16. 1.2 PureTech: precio y cambio de correa de distribuciónAutopista · Motoring press · published 2 August 2026 · consulted 26 September 2026 · in Spanish
  17. Stellantis reacciona a los motores PureTech defectuosos: amplía la garantía de manera retroactiva a 10 añosXataka · Motoring press · published 27 March 2024 · consulted 26 September 2026 · in Spanish
  18. La correa bañada en aceite: cámbiala cada 60.000 km y evita una avería de 3.000 eurosMotor16 · Motoring press · published 27 August 2026 · consulted 26 September 2026 · in Spanish
  19. Suzuki Vitara : avis, qualités et défauts des propriétairesFiches-auto.fr · Owners' forum · consulted 27 September 2026 · in French
  20. Suzuki Swift 3 : avis, qualités et défauts des propriétairesFiches-auto.fr · Owners' forum · consulted 27 September 2026 · in French
  21. Prueba Suzuki Swift Sport 1.4 Boosterjet 140 CVActualidad Motor · Motoring press · published 16 May 2018 · consulted 27 September 2026 · in Spanish
  22. Rappel des moteurs 1.2 Puretech 110 et 130 chFiches-auto.fr · Motoring press · consulted 26 September 2026 · in French
  23. Peugeot-Citroën-DS-Opel. Nouveau rappel de grande ampleur pour le moteur 1.2 PureTechL'argus · Motoring press · published 28 January 2023 · consulted 26 September 2026 · in French
  24. Peugeot, sobre los motores PureTech: «Reconocemos que hemos hecho las cosas mal»Xataka · Motoring press · published 4 June 2026 · consulted 26 September 2026 · in Spanish
  25. 10 años o 175.000 km de garantía para los modelos de Stellantis con motor PureTechAutofácil · Motoring press · published 27 March 2024 · consulted 26 September 2026 · in Spanish
  26. Confirmado: Stellantis llama a revisión a más de 200.000 coches con el motor gasolina sucesor del 1.2 PureTech: «Y también se hará en España»Motorpasión · Motoring press · published 15 July 2025 · consulted 26 September 2026 · in Spanish
  27. Fiabilité du 1.2 PuretechFiches-auto.fr · Motoring press · consulted 26 September 2026 · in French