1.0 PureTech vs 1.6 and 1.8 Ecotec 16v: which engine is more reliable?

According to our risk index, the 1.6 and 1.8 Ecotec 16v carries less risk than the 1.0 PureTech: 23/100 (low 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 1.6 and 1.8 Ecotec 16v has no documented serious faults.

Risk index

1.0 PureTech

High risk · 2 serious faults

Risk index

1.6 and 1.8 Ecotec 16v

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

Reviewed on 30 October 202617 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 1.6 and 1.8 Ecotec 16v reliable?

The 1.6 and 1.8 16v Ecotec (Z16XER/A16XER, Z18XER/A18XER) that Opel fitted between 2005 and 2015 to the Astra H and J, Zafira B, Vectra C and Insignia A have a reputation as reliable naturally aspirated engines: the sources consulted document no serious faults or failure patterns, only minor problems such as ignition coils and, on the 1.8, leaks from the oil cooler or thermostat.^[5][6][7][8]

See the 3 of the 1.6 and 1.8 Ecotec 16v faults

Side-by-side comparison

Comparison of 1.0 PureTech and 1.6 and 1.8 Ecotec 16v
Item	1.0 PureTech	1.6 and 1.8 Ecotec 16v
Technical data
Type	Engine	Engine
Fuel	Petrol	Petrol
Displacement	999 cm³	—
Timing	Wet belt (belt-in-oil)	Timing belt (dry)
Power	68 hp	115–140 hp
Production	2012–2016^{[2][3][9][10]}	2005–2015^{[11][12][13][14]}
Reliability
Risk index (what is it?)	59High risk	23Low risk
Documented faults	3	3
Of high or critical severity	2	0
Worst severity	Critical severity	Medium 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	Medium severity: Oil and coolant leak or mixing via the oil cooler (1.8) Medium severity: Coolant loss through the thermostat or water pump Low severity: Ignition coil failures
Most expensive documented repair	up to €1,200Degradation of the oil-bath timing beltPublished figure^[15][16]	No reliable data
Which versions to buy
BuyRecommended versions	None	1.6 16V Ecotec 115 hp (Z16XER/A16XER, 2006-2015)^[5][6][7] 1.8 16V Ecotec 140 hp (Z18XER/A18XER, 2005-2014)^[5][8][17]
With cautionVersions to be cautious about	1.0 VTi / PureTech 68 (EB0, 2012-2016)^{[1][2][4][15]}	None
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

1.6 and 1.8 Ecotec 16v

Other comparisons

With the 1.0 PureTech

With the 1.6 and 1.8 Ecotec 16v

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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 Insignia A – Typische Probleme & KrankheitenGebrauchtwagenberater.de · Other source · consulted 27 September 2026 · in German
Fiabilité Opel Astra (H): pannes et témoignagesFiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
Fiabilité Opel Zafira 2 (B): pannes et témoignagesFiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
Fiabilité Opel Insignia (A): pannes et témoignagesFiches-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
Opel Astra HWikipedia (alemán) · Other source · consulted 27 September 2026 · in German
Opel ZafiraWikipedia (alemán) · Other source · consulted 27 September 2026 · in German
Opel Astra JWikipedia (alemán) · Other source · consulted 27 September 2026 · in German
Opel Astra J – Typische Probleme & SchwachstellenGebrauchtwagenberater.de · Other source · consulted 27 September 2026 · in German
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 Vectra C: ProblemeGebrauchtwagenberater.de · Other source · consulted 27 September 2026 · in German