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Honda e:HEV / i-MMD vs 1.0 TCe / SCe: which engine is more reliable?

According to our risk index, the Honda e:HEV / i-MMD carries less risk than the 1.0 TCe / SCe: 34/100 versus 41/100 (both moderate risk). The Honda e:HEV / i-MMD has 2 documented serious faults, the main one being «Cracked high-pressure fuel pump (Honda campaign 6YP)»; the 1.0 TCe / SCe has 1 documented serious fault, the main one being «LPG (ECO-G) system faults and tank recall».

Risk index

Honda e:HEV / i-MMD

34

Moderate risk · 2 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 Honda e:HEV / i-MMD reliable?

The Honda e:HEV hybrid system (formerly i-MMD) has no serious, widespread faults documented in the sources consulted. The most cited issue is the 12 V battery going flat when the car stands unused and, on the 2.0, a recall for the high-pressure fuel pump.[1][2][3]

See the 3 of the Honda e:HEV / i-MMD 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 Honda e:HEV / i-MMD and 1.0 TCe / SCe
Honda e:HEV / i-MMD1.0 TCe / SCe
Technical data
TypeEngineEngine
FuelPetrolPetrol
Displacement—999 cm³
TimingChainChain
Power109–184 hp65–117 hp
Productionsince 2018[1][7]since 2019[8][9]
Reliability
Risk index (what is it?)34Moderate risk41Moderate risk
Documented faults34
Of high or critical severity21
Worst severityHigh severityCritical severity
Main faults
  1. High severity: Cracked high-pressure fuel pump (Honda campaign 6YP)
  2. High severity: Faulty fuel pump impeller on the 2019-2020 CR-V hybrid (Honda 6FE campaign)
  3. Low severity: 12 V battery going flat and hybrid system failing to start
  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 €25012 V battery going flat and hybrid system failing to startPublished figure[1]No reliable data
Which versions to buy
BuyRecommended versions
  • e:HEV 1.5 (LEB-H5) 109-131 hp system output (Jazz IV, HR-V III)[1][7]
  • 1.0 SCe 65/75 (H4D, 2019-present)[4][10]
With cautionVersions to be cautious about
  • i-MMD 2.0 184 hp system output (CR-V V hybrid)[1][2]
  • e:HEV 2.0 184 hp system output (Civic XI)[2][11]
  • 1.0 TCe 90/100 (H4Dt, 2019-present)[4][10]
  • 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

Honda e:HEV / i-MMD

1.0 TCe / SCe

See the 7 models with the 1.0 TCe / SCe

Other comparisons

With the Honda e:HEV / i-MMD

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. Sistema híbrido Honda e:HEV (i-MMD): problemas, fiabilidad y coches que lo llevanMotordex · Technical documentation · consulted 29 October 2026 · in Spanish
  2. Honda recalls 1.3 million cars: fuel pump fire risk (KBA 14559R)Car-Recalls.eu · Motoring press · published 17 March 2025 · consulted 29 October 2026
  3. Fiabilité Honda HR-V (2022): pannes et témoignagesFiches-auto.fr · Motoring press · consulted 30 October 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. Honda LEB-H5 (1.5 i-MMD e:HEV): experiencias, problemas, consumo y consejos de compraAutohints · Technical documentation · consulted 29 October 2026 · in Spanish
  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. Fiabilité et pannes de la Renault Clio 5Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
  11. Guide d'achat Honda Civic (nueva campaña 6YP, 4.740 híbridos en Francia)L'argus · Motoring press · published 7 January 2025 · consulted 29 October 2026 · in French
  12. Fiabilité et pannes du Dacia JoggerFiches-auto.fr · Motoring press · consulted 27 September 2026 · in French