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Honda e:HEV / i-MMD vs 2.3 MZR DISI Turbo: which engine is more reliable?

According to our risk index, the Honda e:HEV / i-MMD carries less risk than the 2.3 MZR DISI Turbo: 34/100 (moderate risk) versus 63/100 (high 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 2.3 MZR DISI Turbo has 2 documented serious faults, the main one being «Timing chain stretch and VVT actuator failure on the 2.3 DISI Turbo».

Risk index

Honda e:HEV / i-MMD

34

Moderate risk · 2 serious faults

Lower risk

Risk index

2.3 MZR DISI Turbo

63

High risk · 2 serious faults

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

9 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 2.3 MZR DISI Turbo reliable?

Mazda's 2.3 DISI Turbo (L3-VDT, 2005-2013) is powerful but demanding: the timing chain, the turbo and oil sludge are its weak points; only buy one with a good oil service history.[4][5][6]

See the 3 of the 2.3 MZR DISI Turbo faults

Side-by-side comparison

Comparison of Honda e:HEV / i-MMD and 2.3 MZR DISI Turbo
Honda e:HEV / i-MMD2.3 MZR DISI Turbo
Technical data
TypeEngineEngine
FuelPetrolPetrol
Displacement—2,261 cm³
TimingChainChain
Power109–184 hp256–263 hp
Productionsince 2018[1][7]2005–2013[4][8]
Reliability
Risk index (what is it?)34Moderate risk63High risk
Documented faults33
Of high or critical severity22
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: Timing chain stretch and VVT actuator failure on the 2.3 DISI Turbo
  2. High severity: Premature turbocharger wear from poor lubrication on the 2.3 DISI Turbo
  3. Medium severity: Oil consumption and sludge in the 2.3 DISI Turbo engine
Most expensive documented repairup to €25012 V battery going flat and hybrid system failing to startPublished figure[1]up to €2,200Premature turbocharger wear from poor lubrication on the 2.3 DISI TurboPublished figure[5]
Which versions to buy
BuyRecommended versions
  • e:HEV 1.5 (LEB-H5) 109-131 hp system output (Jazz IV, HR-V III)[1][7]
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]
  • 2.3 MZR DISI Turbo 256-260 hp (L3-VDT, 2005-2009)[4][5]
  • 2.3 MZR DISI Turbo (L3-VDT, 2010-2013)[4][5]
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

2.3 MZR DISI Turbo

Other comparisons

With the Honda e:HEV / i-MMD

With the 2.3 MZR DISI Turbo

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. Mazda L engineWikipedia (inglés) · Other source · consulted 5 October 2026
  5. Problemas Mazda CX-7Totalrenting · Other source · consulted 5 October 2026 · in Spanish
  6. 2009 Mazda CX-7 engine problemsCarComplaints · Owners' forum · consulted 5 October 2026
  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. Mazda CX-7Wikipedia (inglés) · Other source · consulted 5 October 2026
  9. 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