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1.0 EcoBoost vs 1.0 TCe / SCe: which engine is more reliable?

According to our risk index, the 1.0 TCe / SCe carries less risk than the 1.0 EcoBoost: 41/100 (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 1.0 TCe / SCe has 1 documented serious fault, the main one being «LPG (ECO-G) system faults and tank recall».

Risk index

1.0 EcoBoost

71

High risk · 3 serious faults

Risk index

1.0 TCe / SCe

41

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

18 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 1.0 TCe / SCe reliable?

The 1.0 TCe/SCe (H4D/H4Dt) is a simply designed three-cylinder with reasonable reliability. Its most-cited fault is a noise or vibration from the turbo wastegate; the ECO-G (LPG) version adds its own gas-management faults and a 2023 recall over a risk of leaks and fire from the tank. An isolated case of a failed high-pressure pump is also documented, and no oil consumption pattern.[5][6][7]

See the 4 of the 1.0 TCe / SCe faults

Side-by-side comparison

Comparison of 1.0 EcoBoost and 1.0 TCe / SCe
1.0 EcoBoost1.0 TCe / SCe
Technical data
TypeEngineEngine
FuelPetrolPetrol
Displacement999 cm³999 cm³
TimingWet belt (belt-in-oil)Chain
Power100–155 hp65–117 hp
Productionsince 2012[1][8][9][10]since 2019[11][12]
Reliability
Risk index (what is it?)71High risk41Moderate risk
Documented faults44
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: LPG (ECO-G) system faults and tank recall
  2. Medium severity: Metallic noise or vibration from the turbo wastegate
  3. Medium severity: Failed high-pressure fuel pump (isolated case)
Most expensive documented repairup to €1,200Degradation of the timing belt running in oilPublished figure[2]No reliable data
Which versions to buy
BuyRecommended versionsNone
  • 1.0 SCe 65/75 (H4D, 2019-present)[5][13]
With cautionVersions to be cautious about
  • 1.0 EcoBoost 100/125 (Fox, 2012-2017)[2][3][14]
  • 1.0 EcoBoost 100/125/140 with cylinder deactivation (from ~2017)[15][16]
  • 1.0 EcoBoost Hybrid 48V mild hybrid (125/155 hp, from 2019)[1][17]
  • 1.0 TCe 90/100 (H4Dt, 2019-present)[5][13]
  • 1.0 TCe 110 (H4Dt, 2021-present)[18]
  • 1.0 ECO-G 100 (H4Dt + LPG, 2020-present)[5][6][18]
  • 1.0 DIG-T / IG-T 100-117 (HR10DDT, Nissan, 2017-present)[7]
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

1.0 TCe / SCe

See the 7 models with the 1.0 TCe / SCe

Other comparisons

With the 1.0 EcoBoost

With the 1.0 TCe / SCe

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. Fiabilité et pannes du Dacia Sandero 3Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
  6. Dacia et Renault – nouveau rappel : fuite du réservoir GPL, risque d'incendie !Motorsactu · Motoring press · published 12 November 2023 · consulted 27 September 2026 · in French
  7. Fiabilité et pannes du Nissan Juke 2Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
  8. Prueba: Ford Fiesta 1.0 EcoBoost 100 CV (2013)km77 · Motoring press · consulted 26 September 2026 · in Spanish
  9. 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
  10. Ford B-MAX Trend 1.0 EcoBoost 100 CV (2012-2018): precio y ficha técnicakm77 · Technical documentation · consulted 26 September 2026 · in Spanish
  11. Moteur H Renault-NissanWikipedia (francés) · Other source · consulted 27 September 2026 · in French
  12. Nissan JukeWikipedia (inglés) · Other source · consulted 27 September 2026
  13. Fiabilité et pannes de la Renault Clio 5Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
  14. Ford EcoBoost engines: reliability, problems and should you buy one?Carbuyer · Motoring press · consulted 26 September 2026
  15. Ford's Self-Clogging 1.0-Liter EcoBoost Engine Is Finally Getting RecalledThe Drive · Motoring press · consulted 26 September 2026
  16. The Largest Ford EcoBoost Recalls In 15 Years Of ProductionCarBuzz · Motoring press · consulted 26 September 2026
  17. Stellantis no es el único afectado por la correa de distribución bañada en aceiteAutofácil · Motoring press · consulted 26 September 2026 · in Spanish
  18. Fiabilité et pannes du Dacia JoggerFiches-auto.fr · Motoring press · consulted 27 September 2026 · in French