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MotorFiable

1.6 HDi vs 2.0 CDTI: which engine is more reliable?

According to our risk index, the 2.0 CDTI carries less risk than the 1.6 HDi: 38/100 (moderate risk) versus 71/100 (high risk). The 1.6 HDi has 2 documented serious faults, the main one being «Turbo failure through lack of lubrication (carbon deposits and union filter)»; the 2.0 CDTI has 2 documented serious faults, the main one being «Turbocharger wear or failure».

Risk index

1.6 HDi

71

High risk · 2 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

31 sourcesHow we work

Is the 1.6 HDi reliable?

It is an efficient diesel, but its 16-valve versions (2004-2011) have a serious weak point: the turbo is starved of lubrication by carbon deposits from the oil, often made worse by leaks at the injector washers. The 8V engines (from 2010) improved, although you need to watch the 2010-2011 belt and the injectors, and on the BlueHDi the AdBlue tank.[1][2][3][4][5][6][7][8][9]

See the 7 of the 1.6 HDi 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.[10][11][12][13][14][15]

See the 6 of the 2.0 CDTI faults

Side-by-side comparison

Comparison of 1.6 HDi and 2.0 CDTI
1.6 HDi2.0 CDTI
Technical data
TypeEngineEngine
FuelDieselDiesel
Displacement1,560 cm³1,956 cm³
TimingTiming belt (dry)Timing belt (dry)
Power75–120 hp110–210 hp
Production2004–2019[4][6][16][17][18][19][20]2008–2019[10][21]
Reliability
Risk index (what is it?)71High risk38Moderate risk
Documented faults76
Of high or critical severity22
Worst severityHigh severityCritical severity
Main faults
  1. High severity: Turbo failure through lack of lubrication (carbon deposits and union filter)
  2. High severity: Timing belt failure and premature wear
  3. Medium severity: AdBlue tank and pump fault (1.6 BlueHDi)
  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 €1,500Turbo failure through lack of lubrication (carbon deposits and union filter)Estimate[1][22][23][24][25][26][27]No reliable data
Which versions to buy
BuyRecommended versions
  • 1.6 HDi / e-HDi 92/95 8V (DV6D, 2009-2016)[28][29]
None
With cautionVersions to be cautious about
  • 1.6 HDi 75/90 16V (DV6BTED4 / DV6ATED4, 2004-2011)[2][3][28]
  • 1.6 HDi 110 16V DPF (DV6TED4, 2004-2011)[2][6][28]
  • 1.6 HDi / e-HDi 112/115 8V (DV6C, 2010-2015)[5][7]
  • 1.6 BlueHDi 75/100/120 (DV6FE / DV6FD / DV6FC, 2013-2019)[8][19][30]
  • 2.0 CDTI 110-131 hp (A20DTH/A20DTJ, 2008-2015)[11][31]
  • 2.0 CDTI 160-170 hp (A20DTH/A20DTJ/B20DTH, 2008-2019)[12][13]
  • 2.0 BiTurbo CDTI 195 hp (A20DTR, 2011-2015)[11]
  • 2.0 CDTI BiTurbo 210 hp 4x4 (Insignia B, 2017-2022)[21]
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 HDi

See the 49 models with the 1.6 HDi

2.0 CDTI

Other comparisons

With the 1.6 HDi

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. Häufige Schäden und die professionelle Reparatur (Turbolader PSA 1,6 HDi)Krafthand · Motoring press · published 6 June 2013 · consulted 26 September 2026 · in German
  2. Boletín de servicio: sustitución del turbo en motores DV6 (versión reducida de la Información de servicio nº 77)Turbotec · Technical documentation · consulted 26 September 2026 · in Spanish
  3. Diesel : la liste des pannes récurrentes des moteurs HDi, dCi, TDI... (1.6 HDi)L'argus · Motoring press · published 28 October 2014 · consulted 26 September 2026 · in French
  4. Fiabilité Citroën Peugeot. Le bloc 1.6 HDi 8 soupapes est-il fiable ?L'argus · Motoring press · published 23 March 2015 · consulted 26 September 2026 · in French
  5. Fiabilité Citroën Peugeot. Le bloc 1.6 HDi 8 soupapes est-il fiable ? (1.6 HDi 112/115)L'argus · Motoring press · published 23 March 2015 · consulted 26 September 2026 · in French
  6. Essai, avis et fiabilité des 1.6 HDI 110 chFiches-Auto.fr · Motoring press · consulted 26 September 2026 · in French
  7. Essai, avis et fiabilité des 1.6 HDI 112 chFiches-Auto.fr · Motoring press · consulted 26 September 2026 · in French
  8. OCU y BEUC consiguen que Stellantis amplíe la garantía de los coches con AdBlueOCU · Consumer association · published 27 December 2024 · consulted 26 September 2026 · in Spanish
  9. El Grupo PSA lanza la gama de motores Blue HDikm77 · Motoring press · published 16 September 2013 · consulted 26 September 2026 · in Spanish
  10. Opel Insignia AWikipedia (alemán) · Other source · consulted 27 September 2026 · in German
  11. Opel Astra (H, J, K): Technische Daten, Abmessungen, AnhängelastGebrauchtwagenberater.de · Technical documentation · consulted 27 September 2026 · in German
  12. Fiabilité Opel Insignia - avis et pannes des propriétairesFiches-auto.fr · Owners' forum · consulted 27 September 2026 · in French
  13. Fiabilité Opel Insignia Grand Sport - avis et pannes des propriétairesFiches-auto.fr · Owners' forum · consulted 27 September 2026 · in French
  14. 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
  15. 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
  16. Prueba de consumo (202): Peugeot Partner Outdoor 1.6-BlueHDi 120 CVkm77 · Motoring press · published 24 December 2015 · consulted 26 September 2026 · in Spanish
  17. Motor PSA DVWikipedia (es) · Other source · consulted 26 September 2026 · in Spanish
  18. Peugeot DV6TED4 engine: specifications and applicationsMyMotorList · Technical documentation · consulted 26 September 2026
  19. Fiabilité 1.6 BlueHDIFiches-Auto.fr · Motoring press · published 9 December 2021 · consulted 26 September 2026 · in French
  20. Motor Peugeot DV6FDTED: especificaciones y aplicacionesMyMotorList · Technical documentation · consulted 26 September 2026 · in Spanish
  21. Opel InsigniaWikipedia (inglés) · Other source · consulted 27 September 2026
  22. Turbo intercambio Garrett 753420 motor 1.6HDi 1.6TDCI 1.6DFG Automoción · Technical documentation · consulted 26 September 2026 · in Spanish
  23. Turbo Garrett 753420 (GT1544V) para 1.6 HDI 110 CVAML Turbos · Technical documentation · consulted 26 September 2026 · in Spanish
  24. Tubo de engrase PSA 1.6 HDI 110 CV + filtro (OP10049COMP)Electromotor Lantejuela · Technical documentation · consulted 26 September 2026 · in Spanish
  25. ¿Cuál es el precio de la mano de obra en los talleres de las 10 marcas más vendidas en España?km77 · Motoring press · published 30 December 2024 · consulted 26 September 2026 · in Spanish
  26. La doble tarifa de la mano de obra en los talleres españoles: lo que dice su tablón vs. lo que realmente ingresanInfotaller · Motoring press · published June 2026 · consulted 26 September 2026 · in Spanish
  27. ¿Estás cobrando lo justo en tu taller? Así está la mano de obra por hora en 2025Infotaller · Motoring press · published 9 September 2025 · consulted 26 September 2026 · in Spanish
  28. Fiabilité 1.6 HDIFiches-Auto.fr · Motoring press · published 22 April 2024 · consulted 26 September 2026 · in French
  29. Essai, avis et fiabilité des 1.6 HDI 92 chFiches-Auto.fr · Motoring press · consulted 26 September 2026 · in French
  30. Adblue : problèmes en pagaille ?Fiches-Auto.fr · Motoring press · consulted 26 September 2026 · in French
  31. Opel Insignia A – Typische Probleme & KrankheitenGebrauchtwagenberater.de · Other source · consulted 27 September 2026 · in German