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1.6 and 2.0 MultiJet II vs 2.3 dCi (M9T): which engine is more reliable?

According to our risk index, the 2.3 dCi (M9T) carries less risk than the 1.6 and 2.0 MultiJet II: 32/100 (moderate risk) versus 52/100 (high risk). The 1.6 and 2.0 MultiJet II has 2 documented serious faults, the main one being «Saturated diesel particulate filter (DPF) from incomplete regenerations»; the 2.3 dCi (M9T) has 2 documented serious faults, the main one being «Clogged or broken EGR valve damaging the turbo».

Risk index

1.6 and 2.0 MultiJet II

52

High risk · 2 serious faults

Risk index

2.3 dCi (M9T)

32

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

13 sourcesHow we work

Is the 1.6 and 2.0 MultiJet II reliable?

The 1.6 and 2.0 MultiJet II are Fiat diesels with a solid mechanical base, but with known faults worth checking before you buy: the timing belt tensioner may need replacing before the official interval, the EGR valve clogs with urban use, the particulate filter becomes saturated if there are not enough long journeys, and the dual-mass flywheel and the occasional injector wear with mileage. There is no officially recognised recall campaign for these faults.[1][2][3][4]

See the 5 of the 1.6 and 2.0 MultiJet II faults

Is the 2.3 dCi (M9T) reliable?

The 2.3 dCi M9T is a van diesel with good durability if maintenance is kept up. The weak points cited are the EGR and the turbo, the injectors, and the particulate filter in urban use; the sources are mostly opinion websites.[5][6]

See the 5 of the 2.3 dCi (M9T) faults

Side-by-side comparison

Comparison of 1.6 and 2.0 MultiJet II and 2.3 dCi (M9T)
1.6 and 2.0 MultiJet II2.3 dCi (M9T)
Technical data
TypeEngineEngine
FuelDieselDiesel
Displacement—2,300 cm³
TimingTiming belt (dry)Chain
Power90–170 hp100–180 hp
Productionsince 2006[7][8][9]since 2010[5][6][10]
Reliability
Risk index (what is it?)52High risk32Moderate risk
Documented faults55
Of high or critical severity22
Worst severityCritical severityHigh severity
Main faults
  1. High severity: Saturated diesel particulate filter (DPF) from incomplete regenerations
  2. Critical severity: Early tensioner wear and risk of timing belt failure
  3. Medium severity: EGR valve blocked by soot in urban use
  1. High severity: Clogged or broken EGR valve damaging the turbo
  2. Medium severity: Faulty injectors on the 2.3 dCi
  3. Medium severity: Diesel particulate filter (DPF) clogged in urban use
Most expensive documented repairup to €550Early tensioner wear and risk of timing belt failurePublished figure[1]up to €2,300Clogged or broken EGR valve damaging the turboPublished figure[5][11]
Which versions to buy
BuyRecommended versionsNone
  • 2.3 dCi 100-125 hp (M9T)[6]
  • 2.3 dCi 130-145 hp (M9T)[6]
With cautionVersions to be cautious about
  • 1.6 MultiJet II (90-130 hp, 2006-2024)[1][2]
  • 2.0 MultiJet II (120-170 hp, 2008-2024)[3][4]
  • 2.3 dCi 150-180 hp (M9T, some twin-turbo)[6]
  • 2.3 dCi in the Navara D23 (NP300)[12]
  • 2.3 OM 699 in the Mercedes X-Class, 163 and 190 hp (2017-2020)[6][13]
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

1.6 and 2.0 MultiJet II

See the 13 models with the 1.6 and 2.0 MultiJet II

2.3 dCi (M9T)

Other comparisons

With the 1.6 and 2.0 MultiJet II

With the 2.3 dCi (M9T)

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 Tipo: problemas, fallos y averías más frecuentesTotalrenting · Other source · consulted 27 September 2026 · in Spanish
  2. Jeep Renegade: problemas, fallos y averías más frecuentesTotalrenting · Other source · consulted 27 September 2026 · in Spanish
  3. Jeep Renegade (seit 2014) – Typische Probleme & SchwachstellenGebrauchtwagenberater · Motoring press · published 2 March 2025 · consulted 27 September 2026 · in German
  4. Fiat Bravo : les plus et les moinsFiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
  5. Renault Master III 2.3 dCi 130: fiabilité, pannes et coûtsCarverif · Other source · consulted 5 October 2026 · in French
  6. Fiabilité Renault Master 2.3 dCiCarverif · Other source · consulted 5 October 2026 · in French
  7. Fiat JTD engineWikipedia · Other source · consulted 27 September 2026
  8. Fiat Bravo (2007)Wikipedia · Other source · consulted 27 September 2026 · in Spanish
  9. Jeep Renegade (BU)Wikipedia · Other source · consulted 27 September 2026
  10. Renault Master (tercera generación)Wikipedia · Other source · consulted 5 October 2026
  11. Fiabilité du Renault Master RT 2.3 dCi: analyse complèteCarverif · Other source · consulted 5 October 2026 · in French
  12. Nissan Navara wymaga zmian systemu oczyszczania spalinAutokatalog.pl · Motoring press · published 23 August 2023 · consulted 5 October 2026 · in another language
  13. Mercedes-Benz X-Klasse: motores OM 699 y OM 642, producción en BarcelonaWikipedia (de) · Other source · consulted 2 November 2026 · in German