1.4 T-Jet vs Honda e:HEV / i-MMD: which engine is more reliable?

According to our risk index, the Honda e:HEV / i-MMD carries less risk than the 1.4 T-Jet: 34/100 versus 48/100 (both moderate risk). The 1.4 T-Jet has 1 documented serious fault, the main one being «Premature turbocharger failure or wear»; the Honda e:HEV / i-MMD has 2 documented serious faults, the main one being «Cracked high-pressure fuel pump (Honda campaign 6YP)».

Risk index

1.4 T-Jet

Moderate risk · 1 serious fault

Risk index

Honda e:HEV / i-MMD

Moderate risk · 2 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 1.4 T-Jet reliable?

Fiat's 1.4 T-Jet/MultiAir powers a large part of the group's turbo petrol range (Fiat, Abarth, Alfa Romeo, Lancia, Jeep) from 2007 onwards. Several models have accumulated reports of turbocharger failure, MultiAir/UniAir unit faults and high oil consumption; by contrast, there is no documented pattern of timing belt failure.^{[1][2][3][4][5][6]}

See the 4 of the 1.4 T-Jet faults

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.^[7][8][9]

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

Side-by-side comparison

Comparison of 1.4 T-Jet and Honda e:HEV / i-MMD
Item	1.4 T-Jet	Honda e:HEV / i-MMD
Technical data
Type	Engine	Engine
Fuel	Petrol	Petrol
Displacement	1,368 cm³	—
Timing	Timing belt (dry)	Chain
Power	105–205 hp	109–184 hp
Production	2007–2024^{[10][11][12][13]}	since 2018^[7][14]
Reliability
Risk index (what is it?)	48Moderate risk	34Moderate risk
Documented faults	4	3
Of high or critical severity	1	2
Worst severity	High severity	High severity
Main faults	High severity: Premature turbocharger failure or wear Medium severity: MultiAir (UniAir) electro-hydraulic unit failure Medium severity: High oil consumption	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
Most expensive documented repair	up to €2,300Premature turbocharger failure or wearPublished figure^[1][2]	up to €25012 V battery going flat and hybrid system failing to startPublished figure^[7]
Which versions to buy
BuyRecommended versions	None	e:HEV 1.5 (LEB-H5) 109-131 hp system output (Jazz IV, HR-V III)^[7][14]
With cautionVersions to be cautious about	1.4 16v Turbo T-Jet (without MultiAir, 2007-2010)^[6][15][16] 1.4 MultiAir Turbo (2009-2020)^{[1][2][3][4][5][17][18]}	i-MMD 2.0 184 hp system output (CR-V V hybrid)^[7][8] e:HEV 2.0 184 hp system output (Civic XI)^[8][19]
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

1.4 T-Jet

See the 13 models with the 1.4 T-Jet

Honda e:HEV / i-MMD

Other comparisons

With the 1.4 T-Jet

With the Honda e:HEV / i-MMD

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.

Fiat 500X : les plus et les moinsFiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
Fiat 500X : fiabilité, pannes et rappelsFiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
Alfa Romeo MiTo : les plus et les moinsFiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
Alfa Romeo MiTo : fiabilité, pannes et rappelsFiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
Alfa Romeo Giulietta : les plus et les moinsFiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
Fiat Tipo : les plus et les moinsFiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
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
Motor T-JetWikipedia (español) · Other source · consulted 27 September 2026 · in Spanish
Fiat FIRE engineWikipedia (inglés) · Other source · consulted 27 September 2026
MultiAirWikipedia (inglés) · Other source · consulted 27 September 2026
Motor FIREWikipedia (español) · Other source · consulted 27 September 2026 · in Spanish
Honda LEB-H5 (1.5 i-MMD e:HEV): experiencias, problemas, consumo y consejos de compraAutohints · Technical documentation · consulted 29 October 2026 · in Spanish
Fiat Bravo (2007-2014) : les plus et les moinsFiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
Fiat 500 (2007) : les plus et les moinsFiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
Jeep Renegade : les plus et les moinsFiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
Jeep Compass : les plus et les moinsFiches-auto.fr · Motoring press · 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