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1.9 JTD/Multijet and 2.4 JTD vs e-Skyactiv D 3.3: which engine is more reliable?

According to our risk index, the e-Skyactiv D 3.3 carries less risk than the 1.9 JTD/Multijet and 2.4 JTD: 21/100 (low risk) versus 48/100 (moderate risk). The 1.9 JTD/Multijet and 2.4 JTD has 2 documented serious faults, the main one being «Intake manifold flap failure (swirl effect)»; the e-Skyactiv D 3.3 has 2 documented serious faults, the main one being «Stalling and restart failures due to control unit software».

Risk index

1.9 JTD/Multijet and 2.4 JTD

48

Moderate risk · 2 serious faults

Risk index

e-Skyactiv D 3.3

21

Low 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

15 sourcesHow we work

Is the 1.9 JTD/Multijet and 2.4 JTD reliable?

The 1.9 JTD/Multijet (8v and 16v) and the five-cylinder 2.4 JTD were the world's first common rail diesels and have a reputation for robust, long-lived mechanicals. Before buying, check the known faults: the intake manifold flaps and the EGR valve fail or clog with urban use, the turbo and dual-mass flywheel wear with mileage, and the particulate filter on versions that have one clogs if there are not enough long journeys.[1][2][3][4]

See the 6 of the 1.9 JTD/Multijet and 2.4 JTD faults

Is the e-Skyactiv D 3.3 reliable?

The e-Skyactiv D 3.3 is an inline-six diesel with mild-hybrid assistance that Mazda debuted in the CX-60. It is a very recent engine: there is no in-service reliability data, and what is documented are software recalls (stalling, restarting, clutch) fixed at the official dealer.[5][6][7]

See the 2 of the e-Skyactiv D 3.3 faults

Side-by-side comparison

Comparison of 1.9 JTD/Multijet and 2.4 JTD and e-Skyactiv D 3.3
1.9 JTD/Multijet and 2.4 JTDe-Skyactiv D 3.3
Technical data
TypeEngineEngine
FuelDieselDiesel
Displacement—3,283 cm³
TimingTiming belt (dry)—
Power78–210 hp254 hp
Production1997–2012[1][8][9]since 2022[10][11]
Reliability
Risk index (what is it?)48Moderate risk21Low risk
Documented faults62
Of high or critical severity22
Worst severityHigh severityHigh severity
Main faults
  1. High severity: Intake manifold flap failure (swirl effect)
  2. High severity: Turbocharger wear or failure
  3. Medium severity: EGR valve blocked by carbon
  1. High severity: Stalling and restart failures due to control unit software
  2. High severity: Clutch between engine and electric motor that does not re-engage after braking
Most expensive documented repairup to €1,900Dual-mass flywheel wear on manual gearbox versionsPublished figure[12]No reliable data
Which versions to buy
BuyRecommended versionsNoneNone
With cautionVersions to be cautious about
  • 1.9 JTD/Multijet 8v (78-130 hp, 1997-2010)[2][13][14]
  • 1.9 JTD/Multijet 16v (140-190 hp, 2002-2010)[3][15]
  • 2.4 JTD/Multijet (136-210 hp, 1997-2010)[9][15]
  • 3.3 e-Skyactiv D 254 (T3-VPTS, 2022-present)[5][6][7]
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

1.9 JTD/Multijet and 2.4 JTD

See the 16 models with the 1.9 JTD/Multijet and 2.4 JTD

e-Skyactiv D 3.3

Other comparisons

With the 1.9 JTD/Multijet and 2.4 JTD

With the e-Skyactiv D 3.3

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. Fiat JTD engineWikipedia · Other source · consulted 27 September 2026
  2. Opel Vectra C (2002-2008) – Typische Probleme & SchwachstellenGebrauchtwagenberater · Motoring press · consulted 27 September 2026 · in German
  3. Opel Zafira B (2005-2014) – Typische Probleme & SchwachstellenGebrauchtwagenberater · Motoring press · consulted 27 September 2026 · in German
  4. Alfa Romeo GT: problemas, fallos y averías más frecuentesTotalrenting · Other source · consulted 27 September 2026 · in Spanish
  5. DVSA – base de llamadas a revisión (Mazda CX-60)DVSA (Reino Unido) · Official body · consulted 29 October 2026
  6. Mazda CX-60 (2022 – 2024): engine stall (Safety Gate SR/01913/25)Car-Recalls.eu · Official body · published 23 May 2025 · consulted 29 October 2026
  7. Mazda CX-60: The engine not responding to the accelerator after stopping (KBA 14131R)Car-Recalls.eu · Official body · published 11 August 2025 · consulted 29 October 2026
  8. Saab 9-3Wikipedia · Other source · consulted 27 September 2026
  9. Fiat CromaWikipedia · Other source · consulted 27 September 2026 · in Spanish
  10. Skyactiv (apartado Skyactiv-D 3.3)Wikipedia (inglés) · Other source · consulted 29 October 2026
  11. Mazda CX-60 3.3 e-Skyactiv D MHEV 254ps AWD HomuraPractical Caravan · Motoring press · consulted 29 October 2026
  12. Opel Zafira 2 : les plus et les moinsFiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
  13. Alfa Romeo 156 : les plus et les moinsFiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
  14. Alfa Romeo 147 : les plus et les moinsFiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
  15. Alfa Romeo 159 : les plus et les moinsFiches-auto.fr · Motoring press · consulted 27 September 2026 · in French