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2.4, 2.8 and 3.0 V6 30v vs 1.4 and 1.6 16v: which engine is more reliable?

According to our risk index, the 2.4, 2.8 and 3.0 V6 30v carries less risk than the 1.4 and 1.6 16v: 25/100 versus 45/100 (both moderate risk). The 2.4, 2.8 and 3.0 V6 30v has no documented serious faults; the 1.4 and 1.6 16v has 1 documented serious fault, the main one being «Timing belt breakage or premature failure».

Risk index

2.4, 2.8 and 3.0 V6 30v

25

Moderate risk · 0 serious faults

Lower risk

Risk index

1.4 and 1.6 16v

45

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

22 sourcesHow we work

Is the 2.4, 2.8 and 3.0 V6 30v reliable?

The 30-valve V6 engines of the Volkswagen Group (2.4, 2.8 and 3.0) have few documented faults: there are few owner reviews, and they mention coils, the thermostat and oil leaks. The most sensitive item is the timing belt, which on the 2.8 also drives the water pump: Audi and VW ask for it to be changed every 120,000 km, and the job takes 2.9 to 3.5 hours.[1][2][3][4]

See the 4 of the 2.4, 2.8 and 3.0 V6 30v 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.[5][6][7][8]

See the 6 of the 1.4 and 1.6 16v faults

Side-by-side comparison

Comparison of 2.4, 2.8 and 3.0 V6 30v and 1.4 and 1.6 16v
2.4, 2.8 and 3.0 V6 30v1.4 and 1.6 16v
Technical data
TypeEngineEngine
FuelPetrolPetrol
Displacement——
TimingTiming belt (dry)Timing belt (dry)
Power136–220 hp75–135 hp
Production1996–2006[9][10][11]since 1998[12][13][14]
Reliability
Risk index (what is it?)25Moderate risk45Moderate risk
Documented faults46
Of high or critical severity01
Worst severityMedium severityHigh severity
Main faults
  1. Medium severity: Timing belt, tensioner and water pump on the 30v V6
  2. Medium severity: Faulty ignition coils
  3. Medium severity: Thermostat and water pump leaking or seized
  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)[8][15]
With cautionVersions to be cautious about
  • 2.4 V6 30v 136-170 hp (ALW, ARN, ASM, APZ, AMM, AJG, AGA, AML, ALF, APS, ARJ, BDV; 1997-2005)[2][3]
  • 2.8 V6 30v 190-193 hp (ACK, APR, AMX, AQD, ALG, ATQ, BBG; 1996-2006)[1][3][16][17][18]
  • 3.0 V6 30v 220 hp (ASN, AVK; 2000-2005)[3][4]
  • 1.4 16V 75-100 hp (K4J, 1999-2012)[19][20]
  • 1.6 16V 110-135 hp with variable valve timing unit (K4M, 1998-2020)[7][21][22]
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

2.4, 2.8 and 3.0 V6 30v

1.4 and 1.6 16v

See the 13 models with the 1.4 and 1.6 16v

Other comparisons

With the 2.4, 2.8 and 3.0 V6 30v

With the 1.4 and 1.6 16v

Compare other engines

That is the comparison you are viewing: change one of the two engines.

Sources

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

  1. Installation tips: changing timing belts. Detailed instructions for the 2.8L 30V engine in the Audi A4, A6, A8 and VW PassatContiTech (Power Transmission Group) · Technical documentation · published December 2010 · consulted 2 November 2026
  2. Zahnriemenwechsel Audi » Intervalle • Kosten • WerkstättenFairGarage · Other source · consulted 2 November 2026 · in German
  3. Tous les problèmes sur Audi A6 1997 - 2004 (186 témoignages)Fiches-auto.fr · Motoring press · consulted 2 November 2026 · in French
  4. Tous les problèmes sur Audi A4 2001-2007 (446 témoignages)Fiches-auto.fr · Motoring press · consulted 2 November 2026 · in French
  5. Fiabilité et pannes de la Renault Mégane 1Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
  6. Fiabilité et pannes du Renault Scénic 1Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
  7. Fiabilité et pannes de la Renault Laguna 2Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
  8. Fiabilité et pannes du Dacia Duster 1Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
  9. List of discontinued Volkswagen Group petrol enginesWikipedia (inglés) · Other source · consulted 2 November 2026
  10. Audi A6 C5Wikipedia (alemán) · Other source · consulted 2 November 2026 · in German
  11. Audi A6Wikipedia (inglés) · Other source · consulted 2 November 2026
  12. Renault K-Type engineWikipedia (inglés) · Other source · consulted 27 September 2026
  13. Moteur K RenaultWikipedia (francés) · Other source · consulted 27 September 2026 · in French
  14. Anexo:Motores de RenaultWikipedia (español) · Other source · consulted 27 September 2026 · in Spanish
  15. Fiabilité et pannes du Dacia Logan 1Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
  16. Tous les problèmes sur Volkswagen PASSAT 1996-2004 (310 témoignages)Fiches-auto.fr · Motoring press · consulted 2 November 2026 · in French
  17. Tous les problèmes sur Skoda SUPERB 2002 - 2008 (47 témoignages)Fiches-auto.fr · Motoring press · consulted 2 November 2026 · in French
  18. 2.8 V6 30V engine reliabilityMotorsforum · Owners' forum · published April 2006 · consulted 2 November 2026
  19. Fiabilité et pannes de la Renault Clio 2Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
  20. Fiabilité et pannes de la Renault Clio 3Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
  21. Fiabilité et pannes de la Renault Mégane 2Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
  22. Fiabilité et pannes du Renault Scénic 2Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French