1.4 and 1.6 TU3/TU5 vs 1.2 8v: which engine is more reliable?

The 1.4 and 1.6 TU3/TU5 and the 1.2 8v tie on our risk index: 36/100 (moderate risk). The 1.4 and 1.6 TU3/TU5 has 1 documented serious fault, the main one being «Head gasket damaged after overheating»; the 1.2 8v has 1 documented serious fault, the main one being «Damaged cylinder head gasket (coolant loss and overheating)».

Risk index

1.4 and 1.6 TU3/TU5

Moderate risk · 1 serious fault

Risk index

1.2 8v

Moderate risk · 1 serious fault

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

Reviewed on 2 November 202618 sources How we work

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.^[1][2][3][4]

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

Is the 1.2 8v reliable?

The 1.2 8v (D7F) is a simple naturally aspirated engine of 54 to 60 hp, with a timing belt, which Renault fitted from 1996 to the Twingo, Clio II and Kangoo. No catastrophic failures are documented; what owner reviews mention most often are the sensors, the cylinder head gasket, the coil packs and the occasional oil drip.^[5][6][7]

See the 5 of the 1.2 8v faults

Side-by-side comparison

Comparison of 1.4 and 1.6 TU3/TU5 and 1.2 8v
Item	1.4 and 1.6 TU3/TU5	1.2 8v
Technical data
Type	Engine	Engine
Fuel	Petrol	Petrol
Displacement	—	1,149 cm³
Timing	Timing belt (dry)	Timing belt (dry)
Power	75–112 hp	54–60 hp
Production	1986–2014^[1][8][9]	1996–2012^{[10][11][12][13]}
Reliability
Risk index (what is it?)	36Moderate risk	36Moderate risk
Documented faults	5	5
Of high or critical severity	1	1
Worst severity	High severity	High severity
Main faults	High severity: Head gasket damaged after overheating Medium severity: Ignition coils that fail and cause jerking Medium severity: Thermostat stuck open or closed	High severity: Damaged cylinder head gasket (coolant loss and overheating) Medium severity: Crankshaft sensor (TDC) and other engine sensor failure Medium severity: Ignition faults: coil packs, ignition harness and humidity
Most expensive documented repair	No reliable data	No reliable data
Which versions to buy
BuyRecommended versions	TU3 1.4 75 hp 8v (TU3JP/TU3KFX, 1994-2014)^[2][3] TU5 1.6 88-90 hp 8v (TU5JP, from 1994)^[9][14] TU5 1.6 16v 109-112 hp (TU5JP4/TU5NFU, from 2000)^[2][3][4]	None
With cautionVersions to be cautious about	TU9 1.0 and TU1 1.1 (954 and 1,124 cc, 45-60 hp, 1986-2014)^[15][16][17]	1.2 8v 54-60 hp (D7F, 1996-2012)^{[5][6][7][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

1.4 and 1.6 TU3/TU5

See the 18 models with the 1.4 and 1.6 TU3/TU5

1.2 8v

Other comparisons

With the 1.4 and 1.6 TU3/TU5

With the 1.2 8v

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.

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
Fiabilité Renault Clio 2 : pannes et avis des propriétairesFiches-auto.fr · Motoring press · consulted 2 November 2026 · in French
Fiabilité Renault Twingo 1993-2006 : pannes et avis des propriétairesFiches-auto.fr · Motoring press · consulted 2 November 2026 · in French
Fiabilité Renault Twingo 2 (2007-2014) : pannes et avis des propriétairesFiches-auto.fr · Motoring press · consulted 2 November 2026 · in French
PSA TU engineWikipedia (inglés) · Other source · consulted 27 September 2026
Peugeot 206Wikipedia (español) · Other source · consulted 27 September 2026 · in Spanish
Moteur D (Renault)Wikipédia (francés) · Other source · consulted 2 November 2026 · in French
Renault Clio IIWikipedia (alemán) · Other source · consulted 2 November 2026 · in German
Renault TwingoWikipedia (alemán) · Other source · consulted 2 November 2026 · in German
Renault Twingo IWikipedia (alemán) · Other source · consulted 2 November 2026 · in German
Citroën XsaraWikipedia (español) · Other source · consulted 27 September 2026 · in Spanish
Fiabilité Citroën Saxo (1996-2003) : pannes et témoignagesFiches-auto.fr · Owners' forum · consulted 2 November 2026 · in French
Fiabilité Peugeot 106 (1991-2003) : pannes et témoignagesFiches-auto.fr · Owners' forum · consulted 2 November 2026 · in French
Quelle citadine d'occasion choisir ?L'argus · Motoring press · consulted 2 November 2026 · in French
Renault Twingo (ab 1993): Schwachstellen laut TÜV-AuswertungAUTO BILD · Motoring press · published February 2002 · consulted 2 November 2026 · in German