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1.0 SCe (B4D) vs 1.0 TCe / SCe: which engine is more reliable?

According to our risk index, the 1.0 SCe (B4D) carries less risk than the 1.0 TCe / SCe: 23/100 (low risk) versus 41/100 (moderate risk). The 1.0 SCe (B4D) has no documented serious faults; 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 SCe (B4D)

23

Low risk · 0 serious faults

Lower risk

Risk index

1.0 TCe / SCe

41

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

12 sourcesHow we work

Is the 1.0 SCe (B4D) reliable?

The 1.0 SCe (B4D) is a simple, low-power (70-75 hp) naturally aspirated three-cylinder engine, with no serious or systemic faults documented. Its most cited issues are a clutch that can slip or judder when cold and, more occasionally on the Dacia Sandero II, higher-than-normal oil consumption; there is no pattern of faults in the chain-driven timing.[1][2][3]

See the 4 of the 1.0 SCe (B4D) 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.[4][5][6]

See the 4 of the 1.0 TCe / SCe faults

Side-by-side comparison

Comparison of 1.0 SCe (B4D) and 1.0 TCe / SCe
1.0 SCe (B4D)1.0 TCe / SCe
Technical data
TypeEngineEngine
FuelPetrolPetrol
Displacement999 cm³999 cm³
TimingChainChain
Power70–75 hp65–117 hp
Production2014–2024[7][8]since 2019[9][10]
Reliability
Risk index (what is it?)23Low risk41Moderate risk
Documented faults44
Of high or critical severity01
Worst severityMedium severityCritical severity
Main faults
  1. Medium severity: Clutch that slips or judders, especially when cold
  2. Medium severity: Jerking, rough idle or warning light from sensors and ignition coils
  3. Low severity: Higher-than-normal oil consumption (especially on the Dacia Sandero II)
  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 repairNo reliable dataNo reliable data
Which versions to buy
BuyRecommended versionsNone
  • 1.0 SCe 65/75 (H4D, 2019-present)[4][11]
With cautionVersions to be cautious about
  • 1.0 TCe 90/100 (H4Dt, 2019-present)[4][11]
  • 1.0 TCe 110 (H4Dt, 2021-present)[12]
  • 1.0 ECO-G 100 (H4Dt + LPG, 2020-present)[4][5][12]
  • 1.0 DIG-T / IG-T 100-117 (HR10DDT, Nissan, 2017-present)[6]
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 SCe (B4D)

1.0 TCe / SCe

See the 7 models with the 1.0 TCe / SCe

Other comparisons

With the 1.0 SCe (B4D)

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. Fiabilité et pannes de la Dacia Sandero 2Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
  2. Fiabilité et pannes du Dacia Logan 2Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
  3. Fiabilité et pannes de la Renault Twingo 3Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
  4. Fiabilité et pannes du Dacia Sandero 3Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
  5. 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
  6. Fiabilité et pannes du Nissan Juke 2Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
  7. List of Renault enginesWikipedia (inglés) · Other source · consulted 27 September 2026
  8. Renault TwingoWikipedia (inglés) · Other source · consulted 27 September 2026
  9. Moteur H Renault-NissanWikipedia (francés) · Other source · consulted 27 September 2026 · in French
  10. Nissan JukeWikipedia (inglés) · Other source · consulted 27 September 2026
  11. Fiabilité et pannes de la Renault Clio 5Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
  12. Fiabilité et pannes du Dacia JoggerFiches-auto.fr · Motoring press · consulted 27 September 2026 · in French