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1.2 PureTech vs M270/M274: which engine is more reliable?

According to our risk index, the M270/M274 carries less risk than the 1.2 PureTech: 43/100 (moderate 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 M270/M274 has 1 documented serious fault, the main one being «Camshaft breakage due to a defective weld (2015 units)».

Risk index

1.2 PureTech

96

Very high risk · 7 serious faults

Risk index

M270/M274

43

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

20 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 M270/M274 reliable?

The M270 (transverse, front-wheel drive) and the M274 (longitudinal, rear-wheel drive) are the family of turbocharged, direct-injection 4-cylinder engines that Mercedes-Benz has fitted since 2011 in 1.6 and 2.0 litres. They are generally solid engines —the timing chain no longer gives trouble— but with documented faults: camshaft breakage caused by a defective weld (2015) and, on the M274, oil leaking from the camshaft adjuster into the connector.[6][7][8]

See the 5 of the M270/M274 faults

Side-by-side comparison

Comparison of 1.2 PureTech and M270/M274
1.2 PureTechM270/M274
Technical data
TypeEngineEngine
FuelPetrolPetrol
Displacement1,199 cm³1,991 cm³
TimingWet belt (belt-in-oil)Chain
Power68–155 hp102–245 hp
Productionsince 2012[9][10]since 2011[6][11]
Reliability
Risk index (what is it?)96Very high risk43Moderate risk
Documented faults75
Of high or critical severity71
Worst severityCritical severityCritical 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. Critical severity: Camshaft breakage due to a defective weld (2015 units)
  2. Medium severity: Oil leaking from the camshaft adjuster into the electrical connector (M274)
  3. Medium severity: Coolant leaks: thermostat and expansion tank
Most expensive documented repairup to €1,200Oil-bath timing belt degradationPublished figure[2][12][13][14]up to €500NOx sensor failure (code P2200) on the M274Published figure[7]
Which versions to buy
BuyRecommended versionsNoneNone
With cautionVersions to be cautious about
  • 1.2 VTi / PureTech naturally aspirated 68-83 hp (EB2, EB2F, EB2FA..., from 2012)[1][3][15]
  • 1.2 PureTech turbo 110 and 130 hp Euro 6.1 (EB2DT, EB2DTS, 2013-2018)[2][3][4][16]
  • 1.2 PureTech turbo 100-155 hp Euro 6.2/6.3/6d (2018-2022)[2][4][17]
  • 1.2 PureTech turbo 100 and 130 hp with revised belt (2022-2025)[1][2][18]
  • 1.2 Turbo / Hybrid third generation with chain, 100-145 hp (from 2023)[19][20]
  • M270 1.6 turbo 102-156 hp[8]
  • M270 2.0 turbo 156-218 hp[8]
  • M274 2.0 turbo 156-245 hp[7][8]
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 51 models with the 1.2 PureTech

M270/M274

See the 10 models with the M270/M274

Other comparisons

With the 1.2 PureTech

With the M270/M274

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. Mercedes-Benz M270 engineWikipedia · Other source · consulted 27 September 2026
  7. Mercedes M274: Typische Probleme & HaltbarkeitGebrauchtwagenberater · Motoring press · consulted 27 September 2026 · in German
  8. Mercedes M270: Typische Probleme & HaltbarkeitGebrauchtwagenberater · Motoring press · consulted 27 September 2026 · in German
  9. Moteur EBWikipédia (francés) · Other source · consulted 26 September 2026 · in French
  10. El Peugeot 208 estrena motor Turbo 100 con distribución por cadenaDiariomotor · Motoring press · published 16 March 2026 · consulted 26 September 2026 · in Spanish
  11. Mercedes-Benz Clase A (2012): información técnicakm77 · Technical documentation · consulted 27 September 2026 · in Spanish
  12. 1.2 PureTech: precio y cambio de correa de distribuciónAutopista · Motoring press · published 2 August 2026 · consulted 26 September 2026 · in Spanish
  13. 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
  14. 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
  15. Rappel des moteurs 1.2 Puretech 110 et 130 chFiches-auto.fr · Motoring press · consulted 26 September 2026 · in French
  16. 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
  17. 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
  18. 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
  19. 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
  20. Fiabilité du 1.2 PuretechFiches-auto.fr · Motoring press · consulted 26 September 2026 · in French