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1.0 EcoBoost vs 2.4, 2.8 and 3.0 V6 30v: 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 1.0 EcoBoost: 25/100 (moderate risk) versus 71/100 (high risk). The 1.0 EcoBoost has 3 documented serious faults, the main one being «Degradation of the timing belt running in oil»; the 2.4, 2.8 and 3.0 V6 30v has no documented serious faults.

Risk index

1.0 EcoBoost

71

High risk · 3 serious faults

Risk index

2.4, 2.8 and 3.0 V6 30v

25

Moderate 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

21 sourcesHow we work

Is the 1.0 EcoBoost reliable?

It is a turbocharged direct-injection three-cylinder that has won Engine of the Year several times, but it has two very well-documented weak points: two belts running in oil (timing and oil pump) that can disintegrate and seize the engine, and cases of coolant leaks and overheating in early units. It is best bought with a service history and the belts checked or replaced on time.[1][2][3][4]

See the 4 of the 1.0 EcoBoost faults

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.[5][6][7][8]

See the 4 of the 2.4, 2.8 and 3.0 V6 30v faults

Side-by-side comparison

Comparison of 1.0 EcoBoost and 2.4, 2.8 and 3.0 V6 30v
1.0 EcoBoost2.4, 2.8 and 3.0 V6 30v
Technical data
TypeEngineEngine
FuelPetrolPetrol
Displacement999 cm³—
TimingWet belt (belt-in-oil)Timing belt (dry)
Power100–155 hp136–220 hp
Productionsince 2012[1][9][10][11]1996–2006[12][13][14]
Reliability
Risk index (what is it?)71High risk25Moderate risk
Documented faults44
Of high or critical severity30
Worst severityCritical severityMedium severity
Main faults
  1. Critical severity: Degradation of the timing belt running in oil
  2. Critical severity: Oil pump belt and tensioner failure
  3. Critical severity: Coolant leaks and overheating from the turbo hose
  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
Most expensive documented repairup to €1,200Degradation of the timing belt running in oilPublished figure[2]No reliable data
Which versions to buy
BuyRecommended versionsNoneNone
With cautionVersions to be cautious about
  • 1.0 EcoBoost 100/125 (Fox, 2012-2017)[2][3][15]
  • 1.0 EcoBoost 100/125/140 with cylinder deactivation (from ~2017)[16][17]
  • 1.0 EcoBoost Hybrid 48V mild hybrid (125/155 hp, from 2019)[1][18]
  • 2.4 V6 30v 136-170 hp (ALW, ARN, ASM, APZ, AMM, AJG, AGA, AML, ALF, APS, ARJ, BDV; 1997-2005)[6][7]
  • 2.8 V6 30v 190-193 hp (ACK, APR, AMX, AQD, ALG, ATQ, BBG; 1996-2006)[5][7][19][20][21]
  • 3.0 V6 30v 220 hp (ASN, AVK; 2000-2005)[7][8]
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

1.0 EcoBoost

See the 12 models with the 1.0 EcoBoost

2.4, 2.8 and 3.0 V6 30v

Other comparisons

With the 1.0 EcoBoost

With the 2.4, 2.8 and 3.0 V6 30v

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. Ford EcoBoost engineWikipedia · Other source · consulted 26 September 2026
  2. Alerta Ford: la correa de distribución del 1.0 EcoBoost puede romper el motor y la NHTSA ya investigaMotor16 · Motoring press · consulted 26 September 2026 · in Spanish
  3. Los Ford 1.0 EcoBoost tricilíndricos están dando problemas de correas bañadas que recuerdan al caso PureTechMotor.es · Motoring press · consulted 26 September 2026 · in Spanish
  4. Gripa el motor por problema en el manguito se queda sin refrigeranteOpinautos · Owners' forum · consulted 26 September 2026 · in Spanish
  5. 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
  6. Zahnriemenwechsel Audi » Intervalle • Kosten • WerkstättenFairGarage · Other source · consulted 2 November 2026 · in German
  7. Tous les problèmes sur Audi A6 1997 - 2004 (186 témoignages)Fiches-auto.fr · Motoring press · consulted 2 November 2026 · in French
  8. Tous les problèmes sur Audi A4 2001-2007 (446 témoignages)Fiches-auto.fr · Motoring press · consulted 2 November 2026 · in French
  9. Prueba: Ford Fiesta 1.0 EcoBoost 100 CV (2013)km77 · Motoring press · consulted 26 September 2026 · in Spanish
  10. Ford Mondeo Berlina Trend 1.0 EcoBoost 92 kW (125 CV) (2015-2018): precio y ficha técnicakm77 · Technical documentation · consulted 26 September 2026 · in Spanish
  11. Ford B-MAX Trend 1.0 EcoBoost 100 CV (2012-2018): precio y ficha técnicakm77 · Technical documentation · consulted 26 September 2026 · in Spanish
  12. List of discontinued Volkswagen Group petrol enginesWikipedia (inglés) · Other source · consulted 2 November 2026
  13. Audi A6 C5Wikipedia (alemán) · Other source · consulted 2 November 2026 · in German
  14. Audi A6Wikipedia (inglés) · Other source · consulted 2 November 2026
  15. Ford EcoBoost engines: reliability, problems and should you buy one?Carbuyer · Motoring press · consulted 26 September 2026
  16. Ford's Self-Clogging 1.0-Liter EcoBoost Engine Is Finally Getting RecalledThe Drive · Motoring press · consulted 26 September 2026
  17. The Largest Ford EcoBoost Recalls In 15 Years Of ProductionCarBuzz · Motoring press · consulted 26 September 2026
  18. Stellantis no es el único afectado por la correa de distribución bañada en aceiteAutofácil · Motoring press · consulted 26 September 2026 · in Spanish
  19. Tous les problèmes sur Volkswagen PASSAT 1996-2004 (310 témoignages)Fiches-auto.fr · Motoring press · consulted 2 November 2026 · in French
  20. Tous les problèmes sur Skoda SUPERB 2002 - 2008 (47 témoignages)Fiches-auto.fr · Motoring press · consulted 2 November 2026 · in French
  21. 2.8 V6 30V engine reliabilityMotorsforum · Owners' forum · published April 2006 · consulted 2 November 2026