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1.4/1.6 VTi vs 1.4 and 1.6 16v: which engine is more reliable?

According to our risk index, the 1.4 and 1.6 16v carries less risk than the 1.4/1.6 VTi: 45/100 (moderate risk) versus 52/100 (high risk). The 1.4/1.6 VTi has 2 documented serious faults, the main one being «Fragile water pump (and expansion tank or heat exchanger, depending on displacement)»; the 1.4 and 1.6 16v has 1 documented serious fault, the main one being «Timing belt breakage or premature failure».

Risk index

1.4/1.6 VTi

52

High risk · 2 serious faults

Risk index

1.4 and 1.6 16v

45

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

16 sourcesHow we work

Is the 1.4/1.6 VTi reliable?

The 1.4 VTi and 1.6 VTi are the naturally aspirated versions of the Prince family, developed by PSA together with BMW and also used by MINI. They do not have a reputation for particular reliability: fiches-auto.fr documents frequent oil consumption in both displacements and a fragile water pump, later inherited by the turbocharged 1.6 THP; according to a German garage, the timing chain can also wear in any version, although the most reported cases are on the turbo engine.[1][2][3]

See the 3 of the 1.4/1.6 VTi faults

Is the 1.4 and 1.6 16v reliable?

The K4J (1.4) and K4M (1.6), both naturally aspirated 16-valve units, are simple and generally reliable petrol engines: no source consulted documents oil consumption or faults that destroy the block. Their most-cited weak point is the ignition coils, followed by the crankshaft sensor and, on versions with a variable valve timing unit, its pulley; a neglected belt can cause serious damage, as one case in the Renault Laguna II documents.[4][5][6][7]

See the 6 of the 1.4 and 1.6 16v faults

Side-by-side comparison

Comparison of 1.4/1.6 VTi and 1.4 and 1.6 16v
1.4/1.6 VTi1.4 and 1.6 16v
Technical data
TypeEngineEngine
FuelPetrolPetrol
Displacement——
TimingChainTiming belt (dry)
Power90–121 hp75–135 hp
Production2006–2015[8]since 1998[9][10][11]
Reliability
Risk index (what is it?)52High risk45Moderate risk
Documented faults36
Of high or critical severity21
Worst severityCritical severityHigh severity
Main faults
  1. High severity: Fragile water pump (and expansion tank or heat exchanger, depending on displacement)
  2. Critical severity: Wear of the timing chain and tensioner
  3. Medium severity: Oil consumption on the 1.4 and 1.6 VTi versions
  1. Medium severity: Ignition coil failure
  2. High severity: Timing belt breakage or premature failure
  3. Medium severity: Crankshaft position sensor failure
Most expensive documented repairNo reliable dataNo reliable data
Which versions to buy
BuyRecommended versionsNone
  • 1.6 16V 105-110 hp Dacia, without variable valve timing unit (K4M, 2004-2020)[7][12]
With cautionVersions to be cautious about
  • 1.4 16v / VTi (EP3, N12; 90-98 hp)[1][3]
  • 1.6 16v / VTi (EP6/EP6C, N12/N16; 118-121 hp)[1][2][3]
  • 1.4 16V 75-100 hp (K4J, 1999-2012)[13][14]
  • 1.6 16V 110-135 hp with variable valve timing unit (K4M, 1998-2020)[6][15][16]
AvoidVersions to avoidNoneNone

Severity of each fault: green, low; amber, medium; red, high; dark red, critical. How we rate them

Cars that each one is fitted to

1.4/1.6 VTi

See the 10 models with the 1.4/1.6 VTi

1.4 and 1.6 16v

See the 13 models with the 1.4 and 1.6 16v

Other comparisons

With the 1.4/1.6 VTi

With the 1.4 and 1.6 16v

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.

  1. Moteurs essence qui consomment de l'huileFiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
  2. Liste des moteurs qui ont des soucis de refroidissementFiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
  3. Tickende Zeitbombe: So zuverlässig ist der Prince-Motor von PSA und BMWGebrauchtwagenberater.de · Motoring press · consulted 27 September 2026 · in German
  4. Fiabilité et pannes de la Renault Mégane 1Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
  5. Fiabilité et pannes du Renault Scénic 1Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
  6. Fiabilité et pannes de la Renault Laguna 2Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
  7. Fiabilité et pannes du Dacia Duster 1Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
  8. Prince engineWikipedia (inglés) · Other source · consulted 27 September 2026
  9. Renault K-Type engineWikipedia (inglés) · Other source · consulted 27 September 2026
  10. Moteur K RenaultWikipedia (francés) · Other source · consulted 27 September 2026 · in French
  11. Anexo:Motores de RenaultWikipedia (español) · Other source · consulted 27 September 2026 · in Spanish
  12. Fiabilité et pannes du Dacia Logan 1Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
  13. Fiabilité et pannes de la Renault Clio 2Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
  14. Fiabilité et pannes de la Renault Clio 3Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
  15. Fiabilité et pannes de la Renault Mégane 2Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
  16. Fiabilité et pannes du Renault Scénic 2Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French