1.0 PureTech vs 1.4 Turbo: which engine is more reliable?

According to our risk index, the 1.4 Turbo carries less risk than the 1.0 PureTech: 45/100 (moderate risk) versus 59/100 (high risk). The 1.0 PureTech has 2 documented serious faults, the main one being «Excessive oil consumption through the piston rings»; the 1.4 Turbo has 2 documented serious faults, the main one being «Early engine failure from a cracked piston».

Risk index

1.0 PureTech

High risk · 2 serious faults

Risk index

1.4 Turbo

Moderate risk · 2 serious faults

Lower risk

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

Reviewed on 30 October 202618 sources How we work

Is the 1.0 PureTech reliable?

It is a simple naturally aspirated three-cylinder, but with two documented weak points: oil consumption through the piston rings, which Stellantis acknowledges across its entire production (2012-2016), and the oil-bath timing belt it shares with the 1.2. It is only recommended with a full service history, a consumption test and a checked belt.^[1][2][3][4]

See the 3 of the 1.0 PureTech faults

Is the 1.4 Turbo reliable?

The Opel/Vauxhall 1.4 Turbo (GM Small Gasoline Engine; A14NET, A14NEL, B14NET and, from 2015-2016, B14NEH/B14XFT/D14XFT) powered much of Opel's petrol range between 2009 and 2018, with outputs from 120 to 152 hp. There is no documented timing chain failure pattern, but there is one for the water pump and thermostat housing, the ignition coils, turbocharger wear and, in fewer cases, early engine failure from a cracked piston.^{[5][6][7][8][9][10]}

See the 4 of the 1.4 Turbo faults

Side-by-side comparison

Comparison of 1.0 PureTech and 1.4 Turbo
Item	1.0 PureTech	1.4 Turbo
Technical data
Type	Engine	Engine
Fuel	Petrol	Petrol
Displacement	999 cm³	1,364 cm³
Timing	Wet belt (belt-in-oil)	Chain
Power	68 hp	120–152 hp
Production	2012–2016^{[2][3][11][12]}	2009–2018^{[5][13][14][15]}
Reliability
Risk index (what is it?)	59High risk	45Moderate risk
Documented faults	3	4
Of high or critical severity	2	2
Worst severity	Critical severity	Critical severity
Main faults	High severity: Excessive oil consumption through the piston rings Critical severity: Degradation of the oil-bath timing belt Low severity: Ignition coil and spark plug failure	Critical severity: Early engine failure from a cracked piston High severity: Whistling, loss of power and turbocharger wear Medium severity: Coolant leak from the water pump or thermostat housing
Most expensive documented repair	up to €1,200Degradation of the oil-bath timing beltPublished figure^[16][17]	up to €600Ignition coil failurePublished figure^[7]
Which versions to buy
BuyRecommended versions	None	None
With cautionVersions to be cautious about	1.0 VTi / PureTech 68 (EB0, 2012-2016)^{[1][2][4][16]}	1.4 Turbo 120-140 hp (A14NET/A14NEL/B14NET, indirect injection, 2009-2015)^[6][7][8][9] 1.4 Turbo 150-152 hp (B14NEH/B14XFT/D14XFT, from 2015-2016)^[10][18]
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 PureTech

1.4 Turbo

See the 10 models with the 1.4 Turbo

Other comparisons

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Sources

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

Citroën, DS, Opel, Peugeot 1.2 PureTech. Nouvelle prise en charge pour la consommation d'huileL'argus · Motoring press · published 30 March 2024 · consulted 26 September 2026 · in French
Moteur EBWikipédia · Other source · consulted 26 September 2026 · in French
PSA inaugure son « trois-pattes »L'argus · Motoring press · published 28 December 2011 · consulted 26 September 2026 · in French
Moteurs PureTech - Stellantis prend a minima ses responsabilitésUFC-Que Choisir · Consumer association · published 18 January 2025 · consulted 26 September 2026 · in French
Opel Astra JWikipedia (alemán) · Other source · consulted 27 September 2026 · in German
Opel Astra 3 : fiabilité, pannes et rappelsFiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
Opel Mokka : fiabilité, pannes et rappelsFiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
Opel Meriva 2 : fiabilité, pannes et rappelsFiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
Opel Zafira Tourer : fiabilité, pannes et rappelsFiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
Opel Astra 5 : fiabilité, pannes et rappelsFiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
Peugeot 208 5p Access 1.0 PureTech 68 (2012-2015): precio y ficha técnicakm77 · Technical documentation · consulted 26 September 2026 · in Spanish
Prueba de consumo (126): Peugeot 208 1.0-VTi 68 CVkm77 · Motoring press · published 5 August 2013 · consulted 26 September 2026 · in Spanish
GM Family 0 engineWikipedia (inglés) · Other source · consulted 27 September 2026
Opel InsigniaWikipedia (español) · Other source · consulted 27 September 2026 · in Spanish
Opel MokkaWikipedia (español) · Other source · consulted 27 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
Motor ZMZ EB0 Citroën Peugeot C3 II 208 I 1.0 VTi 68 CV usado y reconstruidoFair Motors · Technical documentation · consulted 26 September 2026 · in Spanish
Opel Adam : fiabilité, pannes et rappelsFiches-auto.fr · Motoring press · consulted 27 September 2026 · in French