Honda e:HEV / i-MMD vs 1.0 / 1.25 MPi: which engine is more reliable?

According to our risk index, the 1.0 / 1.25 MPi carries less risk than the Honda e:HEV / i-MMD: 23/100 (low risk) versus 34/100 (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 / 1.25 MPi has no documented serious faults.

Risk index

Honda e:HEV / i-MMD

Moderate risk · 2 serious faults

Risk index

1.0 / 1.25 MPi

Low risk · 0 serious faults

Lower risk

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

Reviewed on 30 October 202619 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][3]

See the 3 of the Honda e:HEV / i-MMD faults

Is the 1.0 / 1.25 MPi reliable?

The 1.0 and 1.25 (also sold as the "1.2") MPi are naturally aspirated engines with no turbo and no direct injection: they suffer neither the injector carbon build-up nor the turbo faults of the same group's 1.0 T-GDI, and there are no manufacturer campaigns or serious engine faults documented. Their real weak point, documented across several models from both brands, is a clutch that many owners describe as worn or slipping sooner than expected, from 30,000 km in one case.^{[4][5][6][7][8][9]}

See the 2 of the 1.0 / 1.25 MPi faults

Side-by-side comparison

Comparison of Honda e:HEV / i-MMD and 1.0 / 1.25 MPi
Item	Honda e:HEV / i-MMD	1.0 / 1.25 MPi
Technical data
Type	Engine	Engine
Fuel	Petrol	Petrol
Displacement	—	—
Timing	Chain	Chain
Power	109–184 hp	65–87 hp
Production	since 2018^[1][10]	since 2011^{[4][11][12][13][14][15]}
Reliability
Risk index (what is it?)	34Moderate risk	23Low risk
Documented faults	3	2
Of high or critical severity	2	0
Worst severity	High severity	Medium severity
Main faults	High severity: Cracked high-pressure fuel pump (Honda campaign 6YP) High severity: Faulty fuel pump impeller on the 2019-2020 CR-V hybrid (Honda 6FE campaign) Low severity: 12 V battery going flat and hybrid system failing to start	Medium severity: Premature clutch wear and slipping Low severity: Unstable idle and occasional stalling when cold
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][10]	1.0 MPi 65-69 hp (G3LA, 2011-present)^[6][16][17] 1.25 / 1.2 MPi 75-87 hp (G4LA, 2011-present)^[5][7][18]
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][19]	None
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

1.0 / 1.25 MPi

See the 9 models with the 1.0 / 1.25 MPi

Other comparisons

With the Honda e:HEV / i-MMD

With the 1.0 / 1.25 MPi

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.

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 Honda HR-V (2022): pannes et témoignagesFiches-auto.fr · Motoring press · consulted 30 October 2026 · in French
Hyundai Kappa engineWikipedia · Other source · consulted 27 September 2026
Kia Stonic (YB): Bekannte Probleme, Mängel & KaufberatungGebrauchtwagenberater · Other source · consulted 27 September 2026 · in German
Kia Picanto (2011-2017): avis, qualités et défautsFiches-auto.fr · Owners' forum · consulted 27 September 2026 · in French
Kia Rio (2011-2016): avis, qualités et défautsFiches-auto.fr · Owners' forum · consulted 27 September 2026 · in French
Hyundai i10 (2007-2013): avis, qualités et défautsFiches-auto.fr · Owners' forum · consulted 27 September 2026 · in French
Hyundai i10 (2013-2020): avis, qualités et défautsFiches-auto.fr · Owners' forum · 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
Hyundai i10Wikipedia · Other source · consulted 27 September 2026
Kia PicantoWikipedia · Other source · consulted 27 September 2026
Kia RioWikipedia · Other source · consulted 27 September 2026
Hyundai i20Wikipedia · Other source · consulted 27 September 2026
Kia StonicWikipedia · Other source · consulted 27 September 2026
Kia Picanto: Bekannte Probleme & KaufberatungGebrauchtwagenberater · Other source · consulted 27 September 2026 · in German
Kia Picanto (2017-): avis, qualités et défautsFiches-auto.fr · Owners' forum · consulted 27 September 2026 · in French
Kia Rio (2017): avis, qualités et défautsFiches-auto.fr · Owners' forum · consulted 27 September 2026 · in French
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