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1.5 BlueHDi vs 2.0 CDTI: which engine is more reliable?

According to our risk index, the 2.0 CDTI carries less risk than the 1.5 BlueHDi: 38/100 (moderate risk) versus 77/100 (very high risk). The 1.5 BlueHDi has 4 documented serious faults, the main one being «Wear and breakage of the 7 mm chain between the camshafts»; the 2.0 CDTI has 2 documented serious faults, the main one being «Turbocharger wear or failure».

Risk index

1.5 BlueHDi

77

Very high risk · 4 serious faults

Risk index

2.0 CDTI

38

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

26 sourcesHow we work

Is the 1.5 BlueHDi reliable?

The 1.5 BlueHDi has a serious weak point in engines built from October 2017 to January 2023: the 7 mm chain linking the camshafts can stretch and break. Stellantis has recalled them and covers this fault for 10 years or 240,000 km; engines built up to August 2020 can also suffer AdBlue tank failures, with partial compensation from the manufacturer.[1][2][3][4]

See the 5 of the 1.5 BlueHDi faults

Is the 2.0 CDTI reliable?

Unlike the 1.3 and 1.6 CDTI of the same era, the Opel/Vauxhall 2.0 CDTI (2008-2019, 110-210 hp with BiTurbo variants) is an engine with a timing belt rather than a chain. It builds up soot in the injectors and EGR valve, clogs its DPF on short journeys, has a recorded faulty turbo and one engine failure, and its models were among those investigated by Germany's KBA and the Frankfurt public prosecutor over a possible switching-off of the emissions treatment.[5][6][7][8][9][10]

See the 6 of the 2.0 CDTI faults

Side-by-side comparison

Comparison of 1.5 BlueHDi and 2.0 CDTI
1.5 BlueHDi2.0 CDTI
Technical data
TypeEngineEngine
FuelDieselDiesel
Displacement1,499 cm³1,956 cm³
TimingTiming belt (dry)Timing belt (dry)
Power75–130 hp110–210 hp
Productionsince 2017[11][12][13][14][15][16]2008–2019[5][17]
Reliability
Risk index (what is it?)77Very high risk38Moderate risk
Documented faults56
Of high or critical severity42
Worst severityCritical severityCritical severity
Main faults
  1. Critical severity: Wear and breakage of the 7 mm chain between the camshafts
  2. Medium severity: AdBlue tank and pump failure
  3. High severity: Seizure of the high-pressure pump and injection system
  1. High severity: Turbocharger wear or failure
  2. Medium severity: Soot build-up in the injectors and EGR valve
  3. Medium severity: Clogged particulate filter (DPF) and oil dilution on short journeys
Most expensive documented repairup to €1,500AdBlue tank and pump failurePublished figure[4][18][19][20]No reliable data
Which versions to buy
BuyRecommended versions
  • 1.5 BlueHDi with 8 mm chain (from February 2023)[2][21][22]
None
With cautionVersions to be cautious about
  • 1.5 BlueHDi 75-130 with 7 mm chain (October 2017 - January 2023)[23][24][25]
  • 2.0 CDTI 110-131 hp (A20DTH/A20DTJ, 2008-2015)[6][26]
  • 2.0 CDTI 160-170 hp (A20DTH/A20DTJ/B20DTH, 2008-2019)[7][8]
  • 2.0 BiTurbo CDTI 195 hp (A20DTR, 2011-2015)[6]
  • 2.0 CDTI BiTurbo 210 hp 4x4 (Insignia B, 2017-2022)[17]
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

1.5 BlueHDi

See the 34 models with the 1.5 BlueHDi

2.0 CDTI

Other comparisons

With the 1.5 BlueHDi

With the 2.0 CDTI

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. 1.5 BlueHDi. Stellantis rappelle 930 000 véhicules et étend la couverture à 10 ansL'argus · Motoring press · published 3 July 2025 · consulted 26 September 2026 · in French
  2. Llaman a revisión a miles de Citroën, Opel, Peugeot, DS y Fiat en España con el motor diésel 1.5 BlueHDiMotorpasión · Motoring press · published 3 July 2025 · consulted 26 September 2026 · in Spanish
  3. Réservoir AdBlue Stellantis. Quels changements dans l'indemnisation des clients français ?L'argus · Motoring press · published 21 December 2024 · consulted 26 September 2026 · in French
  4. OCU y BEUC consiguen que Stellantis amplíe la garantía de los depósitos AdBlue defectuososOCU · Consumer association · published 27 December 2024 · consulted 26 September 2026 · in Spanish
  5. Opel Insignia AWikipedia (alemán) · Other source · consulted 27 September 2026 · in German
  6. Opel Astra (H, J, K): Technische Daten, Abmessungen, AnhängelastGebrauchtwagenberater.de · Technical documentation · consulted 27 September 2026 · in German
  7. Fiabilité Opel Insignia - avis et pannes des propriétairesFiches-auto.fr · Owners' forum · consulted 27 September 2026 · in French
  8. Fiabilité Opel Insignia Grand Sport - avis et pannes des propriétairesFiches-auto.fr · Owners' forum · consulted 27 September 2026 · in French
  9. Opel está de nuevo en el punto de mira por las emisiones con 60.000 coches afectadosMotorpasión · Motoring press · published 16 July 2018 · consulted 27 September 2026 · in Spanish
  10. La Fiscalía alemana registra las instalaciones de Opel en el marco de una investigación sobre emisionesMotorpasión · Motoring press · published 15 October 2018 · consulted 27 September 2026 · in Spanish
  11. Ford DLD engineWikipedia · Other source · consulted 26 September 2026
  12. Motor DV5Oryx Parts · Technical documentation · published 24 January 2024 · consulted 26 September 2026 · in Spanish
  13. Which Cars Have a Wet Belt? Full UK Engine List (2026)CarOkay · Other source · published 2026 · consulted 26 September 2026
  14. Opel Corsa F: Probleme mit dem Ölbad-Zahnriemen erklärtcarVertical · Other source · published 17 July 2026 · consulted 26 September 2026 · in German
  15. PSA 1.5L BlueHDi: a focus on the DV5 engineSumax · Technical documentation · published July 2025 · consulted 26 September 2026
  16. Timing Belt Kit & Water Pump for Peugeot 1.5 BlueHDi - DV5RLymm Engine Parts · Technical documentation · consulted 26 September 2026
  17. Opel InsigniaWikipedia (inglés) · Other source · consulted 27 September 2026
  18. La OCU quiere tomar medidas ante los problemas del sistema de AdBlue de Citroën y Peugeotcoches.com · Motoring press · published 30 May 2023 · consulted 26 September 2026 · in Spanish
  19. Solución fallo AdBlue Peugeot, Citroën y Opel: evita cambiar el depósitoST Automoción · Other source · published 11 December 2025 · consulted 26 September 2026 · in Spanish
  20. Stellantis amplía las compensaciones por los problemas técnicos de sus depósitos AdBlueMinisterio de Derechos Sociales, Consumo y Agenda 2030 · Official body · consulted 26 September 2026 · in Spanish
  21. 1.5 BlueHDi. Stellantis rappelle plusieurs milliers de véhicules pour un problème d'injectionL'argus · Motoring press · published 14 March 2026 · consulted 26 September 2026 · in French
  22. Europa amplía la llamada a revisión por los graves problemas del motor 1.5 BlueHDi de StellantisAutonoción · Motoring press · consulted 26 September 2026 · in Spanish
  23. Cobertura especial para los 1.5 BlueHDi del Grupo Stellantiscoches.net · Motoring press · published 3 July 2025 · consulted 26 September 2026 · in Spanish
  24. Casse chaîne 1.5 BlueHDi. Stellantis étend sa prise en charge à 7 ans ou 180 000 kmL'argus · Motoring press · published 15 January 2025 · consulted 26 September 2026 · in French
  25. Fiabilité moteur Stellantis 1.5 BlueHDi. Une nouvelle huile pour éviter la casseL'argus · Motoring press · published 14 January 2024 · consulted 26 September 2026 · in French
  26. Opel Insignia A – Typische Probleme & KrankheitenGebrauchtwagenberater.de · Other source · consulted 27 September 2026 · in German