1.0 EcoBoost vs 1.2 PureTech: which engine is more reliable?

According to our risk index, the 1.0 EcoBoost carries less risk than the 1.2 PureTech: 71/100 (high risk) versus 96/100 (very high risk). The 1.0 EcoBoost has 3 documented serious faults, the main one being «Degradation of the timing belt running in oil»; the 1.2 PureTech has 6 documented serious faults, the main one being «Oil-bath timing belt degradation».

Risk index

1.0 EcoBoost

High risk · 3 serious faults

Lower risk

Risk index

1.2 PureTech

Very high risk · 6 serious faults

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

Reviewed on 26 September 202627 sources How we work

Is the 1.0 EcoBoost reliable?

It is a turbocharged direct-injection three-cylinder that has won Engine of the Year several times, but it has two very well-documented weak points: two belts running in oil (timing and oil pump) that can disintegrate and seize the engine, and cases of coolant leaks and overheating in early units. It is best bought with a service history and the belts checked or replaced on time.^[1][2][3][4]

See the 4 of the 1.0 EcoBoost faults

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.^{[5][6][7][8][9]}

See the 6 of the 1.2 PureTech faults

Side-by-side comparison

Comparison of 1.0 EcoBoost and 1.2 PureTech
Item	1.0 EcoBoost	1.2 PureTech
Technical data
Type	Engine	Engine
Fuel	Petrol	Petrol
Displacement	999 cm³	1,199 cm³
Timing	Wet belt (belt-in-oil)	Wet belt (belt-in-oil)
Power	100–155 hp	68–155 hp
Production	since 2012^{[1][10][11][12]}	since 2012^[13][14]
Reliability
Risk index (what is it?)	71High risk	96Very high risk
Documented faults	4	6
Of high or critical severity	3	6
Worst severity	Critical severity	Critical severity
Main faults	Critical severity: Degradation of the timing belt running in oil Critical severity: Oil pump belt and tensioner failure Critical severity: Coolant leaks and overheating from the turbo hose	Critical severity: Oil-bath timing belt degradation Critical severity: Loss of braking assistance from vacuum pump damage High severity: Excessive oil consumption from carbon on the piston rings or oil separator failure
Most expensive documented repair	up to €1,200Degradation of the timing belt running in oilPublished figure^[2]	up to €1,200Oil-bath timing belt degradationPublished figure^{[6][15][16][17]}
Which versions to buy
BuyRecommended versions	None	None
With cautionVersions to be cautious about	1.0 EcoBoost 100/125 (Fox, 2012-2017)^[2][3][18] 1.0 EcoBoost 100/125/140 with cylinder deactivation (from ~2017)^[19][20] 1.0 EcoBoost Hybrid 48V mild hybrid (125/155 hp, from 2019)^[1][21]	1.2 VTi / PureTech naturally aspirated 68-83 hp (EB2, EB2F, EB2FA..., from 2012)^[5][7][22] 1.2 PureTech turbo 110 and 130 hp Euro 6.1 (EB2DT, EB2DTS, 2013-2018)^{[6][7][8][23]} 1.2 PureTech turbo 100-155 hp Euro 6.2/6.3/6d (2018-2022)^[6][8][24] 1.2 PureTech turbo 100 and 130 hp with revised belt (2022-2025)^[5][6][25] 1.2 Turbo / Hybrid third generation with chain, 100-145 hp (from 2023)^[26][27]
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

1.0 EcoBoost

See the 11 models with the 1.0 EcoBoost

1.2 PureTech

See the 49 models with the 1.2 PureTech

Other comparisons

With the 1.0 EcoBoost

With the 1.2 PureTech

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Sources

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

Ford EcoBoost engineWikipedia · Other source · consulted 26 September 2026
Alerta Ford: la correa de distribución del 1.0 EcoBoost puede romper el motor y la NHTSA ya investigaMotor16 · Motoring press · consulted 26 September 2026 · in Spanish
Los Ford 1.0 EcoBoost tricilíndricos están dando problemas de correas bañadas que recuerdan al caso PureTechMotor.es · Motoring press · consulted 26 September 2026 · in Spanish
Gripa el motor por problema en el manguito se queda sin refrigeranteOpinautos · Owners' forum · consulted 26 September 2026 · in Spanish
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
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
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
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
Stellantis 1.2 Puretech engine: list of belt and chain modelsItalPassion · Motoring press · published 2 February 2025 · consulted 26 September 2026
Prueba: Ford Fiesta 1.0 EcoBoost 100 CV (2013)km77 · Motoring press · consulted 26 September 2026 · in Spanish
Ford Mondeo Berlina Trend 1.0 EcoBoost 92 kW (125 CV) (2015-2018): precio y ficha técnicakm77 · Technical documentation · consulted 26 September 2026 · in Spanish
Ford B-MAX Trend 1.0 EcoBoost 100 CV (2012-2018): precio y ficha técnicakm77 · Technical documentation · consulted 26 September 2026 · in Spanish
Moteur EBWikipédia (francés) · Other source · consulted 26 September 2026 · in French
El Peugeot 208 estrena motor Turbo 100 con distribución por cadenaDiariomotor · Motoring press · published 16 March 2026 · consulted 26 September 2026 · in Spanish
1.2 PureTech: precio y cambio de correa de distribuciónAutopista · Motoring press · published 2 August 2026 · consulted 26 September 2026 · in Spanish
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
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
Ford EcoBoost engines: reliability, problems and should you buy one?Carbuyer · Motoring press · consulted 26 September 2026
Ford's Self-Clogging 1.0-Liter EcoBoost Engine Is Finally Getting RecalledThe Drive · Motoring press · consulted 26 September 2026
The Largest Ford EcoBoost Recalls In 15 Years Of ProductionCarBuzz · Motoring press · consulted 26 September 2026
Stellantis no es el único afectado por la correa de distribución bañada en aceiteAutofácil · Motoring press · consulted 26 September 2026 · in Spanish
Rappel des moteurs 1.2 Puretech 110 et 130 chFiches-auto.fr · Motoring press · consulted 26 September 2026 · in French
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
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
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
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
Fiabilité du 1.2 PuretechFiches-auto.fr · Motoring press · consulted 26 September 2026 · in French