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2.4 JTD / JTDm Multijet vs 2.0 BlueHDi: which engine is more reliable?

According to our risk index, the 2.4 JTD / JTDm Multijet carries less risk than the 2.0 BlueHDi: 25/100 versus 45/100 (both moderate risk). The 2.4 JTD / JTDm Multijet has no documented serious faults; the 2.0 BlueHDi has 2 documented serious faults, the main one being «DPF clogging on short journeys».

Risk index

2.4 JTD / JTDm Multijet

25

Moderate risk · 0 serious faults

Lower risk

Risk index

2.0 BlueHDi

45

Moderate risk · 2 serious faults

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 2.4 JTD / JTDm Multijet reliable?

The five-cylinder 2.4 JTD/JTDm is powerful but more delicate in its 20V version. Auto Świat says the 10V rarely breaks down on its own; on the 20V, owner testimonies for the 200 and 210 hp Alfa 159 pile up mentions of the EGR and particulate filter, and the 200 hp had the manifold flap failure that Fiat corrected in 2007.[1][2]

See the 4 of the 2.4 JTD / JTDm Multijet faults

Is the 2.0 BlueHDi reliable?

The 2.0 BlueHDi is mechanically one of the sturdiest PSA/Stellantis diesels: in the samples available for its 150 to 180 hp versions, the turbo, DPF, EGR and injectors fail noticeably less often than on earlier generations of the same engine from before 2013. Its documented weak point is the AdBlue tank, a fault so widespread that Stellantis compensates affected owners without a definitive fix.[3][4][5][6]

See the 4 of the 2.0 BlueHDi faults

Side-by-side comparison

Comparison of 2.4 JTD / JTDm Multijet and 2.0 BlueHDi
2.4 JTD / JTDm Multijet2.0 BlueHDi
Technical data
TypeEngineEngine
FuelDieselDiesel
Displacement2,387 cm³1,997 cm³
TimingTiming belt (dry)Timing belt (dry)
Power136–210 hp150–180 hp
Production1998–2011[1][7][8][9][10]2013–2021[11][12][13]
Reliability
Risk index (what is it?)25Moderate risk45Moderate risk
Documented faults44
Of high or critical severity02
Worst severityMedium severityHigh severity
Main faults
  1. Medium severity: Intake manifold flap failure (swirl flaps)
  2. Medium severity: Clogged or faulty EGR valve on the 2.4 JTD and JTDm
  3. Medium severity: Injector failure and diesel leaks on the 2.4 JTDm
  1. Medium severity: AdBlue (SCR) tank and pump failure
  2. High severity: DPF clogging on short journeys
  3. High severity: Injector and high-pressure pump wear
Most expensive documented repairup to €800Clogged or faulty EGR valve on the 2.4 JTD and JTDmPublished figure[14]up to €1,500AdBlue (SCR) tank and pump failurePublished figure[5][6]
Which versions to buy
BuyRecommended versionsNone
With cautionVersions to be cautious about
  • 2.4 JTDm / Multijet 20V (175-185 hp, 2003-2009)[1][15]
  • 2.4 JTDm / Multijet 20V 200 hp (2005-2011)[1][2]
  • 2.4 JTDm 20V 210 hp (Alfa Romeo, 2007-2010)[1][2][16][17]
  • 2.0 BlueHDi 150/163 (DW10FC/DW10FD, 2013-2020)[3][5][6]
  • 2.0 BlueHDi 177/180 (DW10FC/DW10FD, 2013-2021)[3][4]
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

2.4 JTD / JTDm Multijet

See the 7 models with the 2.4 JTD / JTDm Multijet

2.0 BlueHDi

See the 13 models with the 2.0 BlueHDi

Other comparisons

With the 2.4 JTD / JTDm Multijet

With the 2.0 BlueHDi

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. Silnik 2.4 JTD: mocny i trwały, ale czasem też kapryśnyAuto Świat · Motoring press · published 26 September 2011 · consulted 8 October 2026 · in another language
  2. Fiabilité Alfa-romeo 159 (2005-2012) (428 témoignages)Fiches-auto.fr · Owners' forum · consulted 8 October 2026 · in French
  3. Fiabilité du 2.0 HDIFiches-Auto · Motoring press · consulted 27 September 2026 · in French
  4. Fiabilité Opel Grandland X (2017-2024), pannes et témoignagesFiches-Auto · Motoring press · consulted 27 September 2026 · in French
  5. AdBlue : problèmes en pagailleFiches-Auto · Motoring press · consulted 27 September 2026 · in French
  6. Stellantis amplía las compensaciones por los problemas técnicos de sus depósitos AdBlueMinisterio de Derechos Sociales, Consumo y Agenda 2030 · Official body · consulted 27 September 2026 · in Spanish
  7. Fiat JTD engineWikipedia · Other source · consulted 8 October 2026
  8. Alfa Romeo Brera (guía del taller)The Alfa Workshop · Other source · consulted 8 October 2026
  9. Alfa Romeo 159Wikipedia (alemán) · Other source · consulted 8 October 2026 · in German
  10. SCHAEFFLER - ALFA ROMEO 159 (939_) 2.4 JTDM (939AXD)Rolling Kft. (catálogo) · Technical documentation · consulted 8 October 2026
  11. PSA EW/DW engineWikipedia (inglés) · Other source · consulted 27 September 2026
  12. Peugeot 308Wikipedia (inglés) · Other source · consulted 27 September 2026
  13. Peugeot 308 5p GT 2.0 BlueHDi 180 S&S EAT8 (2017-2019) | Precio y ficha técnicakm77 · Motoring press · consulted 27 September 2026 · in Spanish
  14. ¿Qué precio tiene cambiar una válvula EGR?RACE (Real Automóvil Club de España) · Other source · published 17 June 2024 · consulted 8 October 2026 · in Spanish
  15. Fiabilité Alfa-romeo 156: pannes par motorisation (2.4 JTD)Fiches-auto.fr · Owners' forum · consulted 8 October 2026 · in French
  16. Alfa Romeo 159 2.4 JTD 210 ch 93 000 km (2008, Ti): avis d'un propriétaireFiches-auto.fr · Owners' forum · published 26 January 2013 · consulted 8 October 2026 · in French
  17. Guía de compra del Alfa Romeo 159 de segunda manoDiariomotor · Motoring press · published 9 February 2024 · consulted 8 October 2026 · in Spanish