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1.0 EcoBoost vs 2.0 16v F4R and F4RT: which engine is more reliable?

According to our risk index, the 2.0 16v F4R and F4RT 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 2.0 16v F4R and F4RT has 1 documented serious fault, the main one being «Timing belt failure due to overdue maintenance».

Risk index

1.0 EcoBoost

71

High risk · 3 serious faults

Risk index

2.0 16v F4R and F4RT

25

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 1.0 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 2.0 16v F4R and F4RT reliable?

In the sources we consulted, the 2.0-litre F4R and F4RT show no engine-destroying design faults, but the timing belt must be changed on time, and the coils (RS) and the variable valve timing pulley appear as weak points. We have found no reliable sources on oil consumption or big-end bearings.[5][6][7][8]

See the 3 of the 2.0 16v F4R and F4RT faults

Side-by-side comparison

Comparison of 1.0 EcoBoost and 2.0 16v F4R and F4RT
1.0 EcoBoost2.0 16v F4R and F4RT
Technical data
TypeEngineEngine
FuelPetrolPetrol
Displacement999 cm³1,998 cm³
TimingWet belt (belt-in-oil)Timing belt (dry)
Power100–155 hp135–250 hp
Productionsince 2012[1][9][10][11]since 2000[12]
Reliability
Risk index (what is it?)71High risk25Moderate risk
Documented faults43
Of high or critical severity31
Worst severityCritical severityCritical 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. Critical severity: Timing belt failure due to overdue maintenance
  2. Medium severity: Faulty camshaft variable valve timing pulley
  3. Medium severity: F4RT ignition coil failure
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][13]
  • 1.0 EcoBoost 100/125/140 with cylinder deactivation (from ~2017)[14][15]
  • 1.0 EcoBoost Hybrid 48V mild hybrid (125/155 hp, from 2019)[1][16]
  • 2.0 16v naturally aspirated 135-197 hp (F4R)[5][6]
  • 2.0 turbo 165-250 hp (F4RT)[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 11 models with the 1.0 EcoBoost

2.0 16v F4R and F4RT

Other comparisons

With the 1.0 EcoBoost

With the 2.0 16v F4R and F4RT

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. 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. Pannes Renault Mégane 2 (testimonios por motorización)fiches-auto.fr · Other source · consulted 5 October 2026 · in French
  6. Fiabilité occasion Renault Mégane II (2002-2009)CarVerif · Other source · consulted 5 October 2026 · in French
  7. Renaultsport Megane checkpointsevo · Motoring press · published 20 November 2008 · consulted 5 October 2026
  8. RenaultSport Megane 225 buying guide, history and reviewOctane · Motoring press · published 7 February 2025 · consulted 5 October 2026
  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. Moteur F Renault (F4R y F4RT)Wikipedia (fr) · Other source · consulted 5 October 2026 · in French
  13. Ford EcoBoost engines: reliability, problems and should you buy one?Carbuyer · Motoring press · consulted 26 September 2026
  14. Ford's Self-Clogging 1.0-Liter EcoBoost Engine Is Finally Getting RecalledThe Drive · Motoring press · consulted 26 September 2026
  15. The Largest Ford EcoBoost Recalls In 15 Years Of ProductionCarBuzz · Motoring press · consulted 26 September 2026
  16. Stellantis no es el único afectado por la correa de distribución bañada en aceiteAutofácil · Motoring press · consulted 26 September 2026 · in Spanish