Honda e:HEV / i-MMD vs 0.9 TCe: which engine is more reliable?

According to our risk index, the Honda e:HEV / i-MMD carries less risk than the 0.9 TCe: 25/100 versus 49/100 (both moderate risk). The Honda e:HEV / i-MMD has 1 documented serious fault, the main one being «Cracked high-pressure fuel pump (Honda campaign 6YP)»; the 0.9 TCe has 3 documented serious faults, the main one being «Coolant leak at the thermostat housing».

Risk index

Honda e:HEV / i-MMD

Moderate risk · 1 serious fault

Lower risk

Risk index

0.9 TCe

Moderate risk · 3 serious faults

The index (0–100) weights the severity and frequency of the three most serious documented faults. How it is calculated

Reviewed on 29 October 20269 sources How 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]

See the 2 of the Honda e:HEV / i-MMD faults

Is the 0.9 TCe reliable?

The 0.9 TCe (H4Bt) is a three-cylinder turbo with a good reliability reputation, better than that of its sibling the 1.2 TCe: it does not share the same oil consumption or the same rate of chain problems. Its most-cited weak point is a coolant leak at the thermostat housing, which if ignored can end up damaging the head gasket; chain, turbo and lambda sensor cases appear less often.^[3][4]

See the 5 of the 0.9 TCe faults

Side-by-side comparison

Comparison of Honda e:HEV / i-MMD and 0.9 TCe
Item	Honda e:HEV / i-MMD	0.9 TCe
Technical data
Type	Engine	Engine
Fuel	Petrol	Petrol
Displacement	—	898 cm³
Timing	Chain	Chain
Power	109–184 hp	90 hp
Production	since 2018^[1][5]	2012–2024^{[3][4][6][7][8]}
Reliability
Risk index (what is it?)	25Moderate risk	49Moderate risk
Documented faults	2	5
Of high or critical severity	1	3
Worst severity	High severity	Critical severity
Main faults	High severity: Cracked high-pressure fuel pump (Honda campaign 6YP) Low severity: 12 V battery going flat and hybrid system failing to start	High severity: Coolant leak at the thermostat housing Critical severity: Timing chain or tensioner failure High severity: Turbocharger wear or failure
Most expensive documented repair	up 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][5]	None
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][9]	0.9 TCe 90 (H4Bt, 2012-2024)^[3][4]
AvoidVersions to avoid	None	None

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

0.9 TCe

See the 8 models with the 0.9 TCe

Other comparisons

With the Honda e:HEV / i-MMD

With the 0.9 TCe

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Sources

Every fact on this page links to its source. If you find an error, let us know.

Sistema híbrido Honda e:HEV (i-MMD): problemas, fiabilidad y coches que lo llevanMotordex · Technical documentation · consulted 29 October 2026 · in Spanish
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
Fiabilité des 0.9 TCeFiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
Moteur H Renault-NissanWikipedia (francés) · Other source · consulted 27 September 2026 · in French
Honda LEB-H5 (1.5 i-MMD e:HEV): experiencias, problemas, consumo y consejos de compraAutohints · Technical documentation · consulted 29 October 2026 · in Spanish
Mercedes-Benz M281 engineWikipedia (inglés) · Other source · consulted 27 September 2026
Renault ClioWikipedia (español) · Other source · consulted 27 September 2026 · in Spanish
Dacia SanderoWikipedia (español) · Other source · consulted 27 September 2026 · in Spanish
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