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1.0 TCe / SCe vs 1.4 and 1.6 16v: which engine is more reliable?

According to our risk index, the 1.0 TCe / SCe carries less risk than the 1.4 and 1.6 16v: 41/100 versus 45/100 (both moderate risk). The 1.0 TCe / SCe has 1 documented serious fault, the main one being «LPG (ECO-G) system faults and tank recall»; the 1.4 and 1.6 16v has 1 documented serious fault, the main one being «Timing belt breakage or premature failure».

Risk index

1.0 TCe / SCe

41

Moderate risk · 1 serious fault

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

19 sourcesHow we work

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.[1][2][3]

See the 4 of the 1.0 TCe / SCe 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 1.0 TCe / SCe and 1.4 and 1.6 16v
1.0 TCe / SCe1.4 and 1.6 16v
Technical data
TypeEngineEngine
FuelPetrolPetrol
Displacement999 cm³—
TimingChainTiming belt (dry)
Power65–117 hp75–135 hp
Productionsince 2019[8][9]since 1998[10][11][12]
Reliability
Risk index (what is it?)41Moderate risk45Moderate risk
Documented faults46
Of high or critical severity11
Worst severityCritical severityHigh severity
Main faults
  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)
  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 versions
  • 1.0 SCe 65/75 (H4D, 2019-present)[1][13]
  • 1.6 16V 105-110 hp Dacia, without variable valve timing unit (K4M, 2004-2020)[7][14]
With cautionVersions to be cautious about
  • 1.0 TCe 90/100 (H4Dt, 2019-present)[1][13]
  • 1.0 TCe 110 (H4Dt, 2021-present)[15]
  • 1.0 ECO-G 100 (H4Dt + LPG, 2020-present)[1][2][15]
  • 1.0 DIG-T / IG-T 100-117 (HR10DDT, Nissan, 2017-present)[3]
  • 1.4 16V 75-100 hp (K4J, 1999-2012)[16][17]
  • 1.6 16V 110-135 hp with variable valve timing unit (K4M, 1998-2020)[6][18][19]
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 TCe / SCe

See the 7 models with the 1.0 TCe / SCe

1.4 and 1.6 16v

See the 13 models with the 1.4 and 1.6 16v

Other comparisons

With the 1.0 TCe / SCe

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. Fiabilité et pannes du Dacia Sandero 3Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
  2. 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
  3. Fiabilité et pannes du Nissan Juke 2Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
  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. Moteur H Renault-NissanWikipedia (francés) · Other source · consulted 27 September 2026 · in French
  9. Nissan JukeWikipedia (inglés) · Other source · consulted 27 September 2026
  10. Renault K-Type engineWikipedia (inglés) · Other source · consulted 27 September 2026
  11. Moteur K RenaultWikipedia (francés) · Other source · consulted 27 September 2026 · in French
  12. Anexo:Motores de RenaultWikipedia (español) · Other source · consulted 27 September 2026 · in Spanish
  13. Fiabilité et pannes de la Renault Clio 5Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
  14. Fiabilité et pannes du Dacia Logan 1Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
  15. Fiabilité et pannes du Dacia JoggerFiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
  16. Fiabilité et pannes de la Renault Clio 2Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
  17. Fiabilité et pannes de la Renault Clio 3Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
  18. Fiabilité et pannes de la Renault Mégane 2Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
  19. Fiabilité et pannes du Renault Scénic 2Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French