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2.0 HDi 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 2.0 HDi: 32/100 (moderate risk) versus 55/100 (high risk). The 2.0 HDi has 2 documented serious faults, the main one being «Variable-geometry turbo failures (actuator, sensors and clogging)»; the 2.3 dCi (M9T) has 2 documented serious faults, the main one being «Clogged or broken EGR valve damaging the turbo».

Risk index

2.0 HDi

55

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

14 sourcesHow we work

Is the 2.0 HDi reliable?

It is a robust diesel in its simplest 90 hp version, but the 136 to 140 hp generation with a DPF (2004-2011) concentrates the engine's problems: turbo, DPF, EGR and, above all, a dual-mass flywheel that fails very often. The BlueHDi engines (from 2013) are mechanically more reliable, but add an AdBlue tank that can crystallise; the OCU (Spanish consumer organisation) has reported this fault in Spain and Stellantis covers it with a compensation programme.[1][2][3][4]

See the 5 of the 2.0 HDi 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 2.0 HDi and 2.3 dCi (M9T)
2.0 HDi2.3 dCi (M9T)
Technical data
TypeEngineEngine
FuelDieselDiesel
Displacement1,997 cm³2,300 cm³
TimingTiming belt (dry)Chain
Power90–180 hp100–180 hp
Production1999–2021[1][7][8][9][10]since 2010[5][6][11]
Reliability
Risk index (what is it?)55High risk32Moderate risk
Documented faults55
Of high or critical severity22
Worst severityHigh severityHigh severity
Main faults
  1. High severity: Variable-geometry turbo failures (actuator, sensors and clogging)
  2. High severity: DPF clogging on additive-type systems (Eolys/cerine)
  3. Medium severity: Premature dual-mass flywheel wear (from 107/110 hp)
  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 €1,200AdBlue tank crystallisation and failures (BlueHDi)Published figure[3][4][12]up to €2,300Clogged or broken EGR valve damaging the turboPublished figure[5][13]
Which versions to buy
BuyRecommended versions
  • 2.0 HDi 90 (DW10TD, 1999-2005)[1]
  • 2.0 HDi 150/163 DPF (DW10C / DW10CTED4, 2007-2013)[1]
  • 2.3 dCi 100-125 hp (M9T)[6]
  • 2.3 dCi 130-145 hp (M9T)[6]
With cautionVersions to be cautious about
  • 2.0 HDi 107/110 (DW10ATED / DW10ATED4, 2000-2008)[1]
  • 2.0 HDi 136/138/140 DPF (DW10BTED4, 2004-2011)[1]
  • 2.0 BlueHDi 120/150/163/180 (DW10FE / DW10FD / DW10FC, 2013-2021)[1][2][3][4]
  • 2.3 dCi 150-180 hp (M9T, some twin-turbo)[6]
  • 2.3 dCi in the Navara D23 (NP300)[14]
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

2.0 HDi

See the 19 models with the 2.0 HDi

2.3 dCi (M9T)

Other comparisons

With the 2.0 HDi

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. Fiabilité du 2.0 HDIFiches-Auto · Motoring press · consulted 27 September 2026 · in French
  2. AdBlue : problèmes en pagailleFiches-Auto · Motoring press · consulted 27 September 2026 · in French
  3. Más problemas para Stellantis: ahora tendrá que indemnizar también a los afectados por el AdBlueAutopista · Motoring press · published 30 December 2024 · consulted 27 September 2026 · in Spanish
  4. El fallo que afecta a cientos de coches y que ahora la OCU denuncia para reclamar indemnizacionesAutopista · Motoring press · published 29 May 2023 · consulted 27 September 2026 · in Spanish
  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. PSA EW/DW engineWikipedia (inglés) · Other source · consulted 27 September 2026
  8. Peugeot 307Wikipedia (español) · Other source · consulted 27 September 2026 · in Spanish
  9. Peugeot 3008Wikipedia (español) · Other source · consulted 27 September 2026 · in Spanish
  10. Citroën C4 PicassoWikipedia (español) · Other source · consulted 27 September 2026 · in Spanish
  11. Renault Master (tercera generación)Wikipedia · Other source · consulted 5 October 2026
  12. Aditivo AdBlue: qué debes usar para evitar una reparación de 2.000 euros en tu coche diéselAutopista · Motoring press · published 1 April 2026 · consulted 27 September 2026 · in Spanish
  13. Fiabilité du Renault Master RT 2.3 dCi: analyse complèteCarverif · Other source · consulted 5 October 2026 · in French
  14. Nissan Navara wymaga zmian systemu oczyszczania spalinAutokatalog.pl · Motoring press · published 23 August 2023 · consulted 5 October 2026 · in another language