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BMW M54 vs Honda IMA híbrido: which engine is more reliable?

According to our risk index, the Honda IMA híbrido carries less risk than the BMW M54: 21/100 (low risk) versus 54/100 (high risk). The BMW M54 has 2 documented serious faults, the main one being «Thermostat and water pump failure»; the Honda IMA híbrido has 1 documented serious fault, the main one being «IMA hybrid system DC/DC converter failure with engine stall (Civic Hybrid 2005-2006)».

Risk index

BMW M54

54

High risk · 2 serious faults

Risk index

Honda IMA híbrido

21

Low risk · 1 serious fault

Lower risk

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

17 sourcesHow we work

Is the BMW M54 reliable?

The BMW M54 (2000-2006) is a naturally aspirated petrol inline-six with a reputation for longevity, passing 200,000 km if maintained. Its weak points are the crankcase ventilation valve and the plastic cooling system; check that they have been renewed.[1][2][3]

See the 5 of the BMW M54 faults

Is the Honda IMA híbrido reliable?

Honda's IMA hybrid system (Insight II, Jazz Hybrid, CR-Z and Civic Hybrid) has a good reputation for reliability in the British press, and its documented weak point is the ageing of the high-voltage battery, which turns on the IMA warning light. There were also two one-off campaigns: the DC/DC converter on the 2006 Civic Hybrid and the CR-Z software.[4][5][6]

See the 3 of the Honda IMA híbrido faults

Side-by-side comparison

Comparison of BMW M54 and Honda IMA híbrido
BMW M54Honda IMA híbrido
Technical data
TypeEngineEngine
FuelPetrolPetrol
Displacement——
TimingChainChain
Power170–235 hp88–132 hp
Production2000–2006[7][8]1999–2016[5][9][10][11][12]
Reliability
Risk index (what is it?)54High risk21Low risk
Documented faults53
Of high or critical severity21
Worst severityHigh severityHigh severity
Main faults
  1. High severity: Thermostat and water pump failure
  2. High severity: Cracked expansion tank and coolant leak
  3. Medium severity: Cracked crankcase ventilation valve (CCV) and oil consumption
  1. Medium severity: High-voltage IMA battery degradation and IMA warning light on
  2. High severity: IMA hybrid system DC/DC converter failure with engine stall (Civic Hybrid 2005-2006)
  3. Medium severity: CR-Z IMA hybrid system software: the car may move when the engine stalls
Most expensive documented repairNo reliable dataNo reliable data
Which versions to buy
BuyRecommended versionsNone
  • 1.3 i-VTEC IMA 98 (LDA-MF6 / LDA3, Insight II, 2009-2014)[5][6]
  • 1.3 i-VTEC IMA (LDA-MF6 / LDA3, Jazz Hybrid, 2011-2015)[5][13][14]
  • 1.5 i-VTEC IMA 132 (LEA1, CR-Z with lithium-ion battery, 2013-2016)[12][15]
With cautionVersions to be cautious about
  • 1.3 i-DSI IMA 110 (LDA-MF5 / LDA2, Civic Hybrid VIII, 2006-2011)[4][16][17]
  • 1.5 i-VTEC IMA 123 (LEA1 / LEA-MF6, CR-Z with NiMH battery, 2010-2012)[4][12][15]
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

BMW M54

Honda IMA híbrido

Other comparisons

With the BMW M54

With the Honda IMA híbrido

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Sources

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

  1. BMW M54 Engine Guide: Reliability, Common Problems & Tuning PotentialEuro Premium Parts · Technical documentation · consulted 5 October 2026
  2. Il motore da 6 cilindri che supera agilmente i 300.000 kmAutoblog.it · Motoring press · published 13 February 2026 · consulted 5 October 2026 · in Italian
  3. BMW M54 reliabilityAutoscore · Other source · consulted 5 October 2026
  4. DVSA – base de llamadas a revisiónDVSA (Reino Unido) · Official body · consulted 8 October 2026
  5. Used Honda Insight Mk2 buying guideDrivingElectric · Motoring press · published 24 October 2019 · consulted 8 October 2026
  6. Honda Insight (2009 - 2014) used car reviewRAC · Motoring press · published 13 February 2015 · consulted 8 October 2026
  7. BMW M54Wikipedia (inglés) · Other source · consulted 5 October 2026
  8. BMW M54Wikipedia (alemán) · Other source · consulted 5 October 2026 · in German
  9. Integrated Motor AssistWikipedia · Other source · consulted 8 October 2026
  10. Honda L engineWikipedia · Other source · consulted 8 October 2026
  11. Honda CR-ZWikipedia · Other source · consulted 8 October 2026
  12. Used Honda CR-Z buying guideDrivingElectric · Motoring press · published 31 October 2022 · consulted 8 October 2026
  13. Fiabilité et pannes Honda Jazz 2 (2008-2015)Fiches-auto.fr · Other source · consulted 8 October 2026 · in French
  14. Honda JazzWikipedia (DE) · Other source · consulted 8 October 2026 · in German
  15. Used Honda CR-Z reviewAuto Express · Motoring press · published 14 August 2016 · consulted 8 October 2026
  16. Fiabilité et pannes Honda Civic (2006-2011)Fiches-auto.fr · Other source · consulted 8 October 2026 · in French
  17. Honda Civic 8 (2005-2011): alle bekannten Probleme & KrankheitenGebrauchtwagenberater.de · Motoring press · published 22 September 2024 · consulted 8 October 2026 · in German