1.0 PureTech vs 1.4 and 1.6 TU3/TU5: which engine is more reliable?

According to our risk index, the 1.4 and 1.6 TU3/TU5 carries less risk than the 1.0 PureTech: 36/100 (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 and 1.6 TU3/TU5 has 1 documented serious fault, the main one being «Head gasket damaged after overheating».

Risk index

1.0 PureTech

High risk · 2 serious faults

Risk index

1.4 and 1.6 TU3/TU5

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

Reviewed on 30 October 202615 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 and 1.6 TU3/TU5 reliable?

The TU is one of PSA's most widely built petrol engines: more than 15.6 million units between 1986 and 2014. It is simple (no turbo, no direct injection or particulate filter, belt-driven timing) and has a reputation for durability. The faults owners cite most are cheap wear parts -ignition coils, sensors and thermostat- and not block failures or cylinder head design flaws.^[5][6][7][8]

See the 5 of the 1.4 and 1.6 TU3/TU5 faults

Side-by-side comparison

Comparison of 1.0 PureTech and 1.4 and 1.6 TU3/TU5
Item	1.0 PureTech	1.4 and 1.6 TU3/TU5
Technical data
Type	Engine	Engine
Fuel	Petrol	Petrol
Displacement	999 cm³	—
Timing	Wet belt (belt-in-oil)	Timing belt (dry)
Power	68 hp	75–112 hp
Production	2012–2016^{[2][3][9][10]}	1994–2014^[5][11][12]
Reliability
Risk index (what is it?)	59High risk	36Moderate risk
Documented faults	3	5
Of high or critical severity	2	1
Worst severity	Critical severity	High 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	High severity: Head gasket damaged after overheating Medium severity: Ignition coils that fail and cause jerking Medium severity: Thermostat stuck open or closed
Most expensive documented repair	up to €1,200Degradation of the oil-bath timing beltPublished figure^[13][14]	No reliable data
Which versions to buy
BuyRecommended versions	None	TU3 1.4 75 hp 8v (TU3JP/TU3KFX, 1994-2014)^[6][7] TU5 1.6 88-90 hp 8v (TU5JP, from 1994)^[12][15] TU5 1.6 16v 109-112 hp (TU5JP4/TU5NFU, from 2000)^[6][7][8]
With cautionVersions to be cautious about	1.0 VTi / PureTech 68 (EB0, 2012-2016)^{[1][2][4][13]}	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

1.4 and 1.6 TU3/TU5

See the 10 models with the 1.4 and 1.6 TU3/TU5

Other comparisons

With the 1.0 PureTech

With the 1.4 and 1.6 TU3/TU5

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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
Moteur PSA TUWikipédia (francés) · Other source · consulted 27 September 2026 · in French
Tous les problèmes sur Peugeot 206 (témoignages)Fiches-auto.fr · Owners' forum · consulted 27 September 2026 · in French
Tous les problèmes sur Peugeot 307 (témoignages)Fiches-auto.fr · Owners' forum · consulted 27 September 2026 · in French
Tous les problèmes sur Citroën Xsara (témoignages)Fiches-auto.fr · Owners' forum · 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
PSA TU engineWikipedia (inglés) · Other source · consulted 27 September 2026
Peugeot 206Wikipedia (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
Citroën XsaraWikipedia (español) · Other source · consulted 27 September 2026 · in Spanish