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MotorFiable

1.6 HDi vs 2.5 / 3.0 D-4D (KD): which engine is more reliable?

According to our risk index, the 2.5 / 3.0 D-4D (KD) carries less risk than the 1.6 HDi: 63/100 versus 71/100 (both 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 2.5 / 3.0 D-4D (KD) has 3 documented serious faults, the main one being «Cracked pistons in the 3.0 D-4D (1KD-FTV)».

Risk index

1.6 HDi

71

High risk · 2 serious faults

Risk index

2.5 / 3.0 D-4D (KD)

63

High risk · 3 serious faults

Lower risk

The index (0–100) weights the severity and frequency of the three most serious documented faults. How it is calculated

34 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 2.5 / 3.0 D-4D (KD) reliable?

Toyota's KD diesels (2.5 D-4D, 2KD-FTV, and 3.0 D-4D, 1KD-FTV) have their best-documented weak points in the injectors: the copper seats of the 2004-2007 units, which can block the oil pickup, and the Denso injectors of the 3.0. The 3.0 of the Euro 4 era also has a record of cracked pistons; for the 2.5 we have only found the injector seal problem.[10][11][12][13][14]

See the 5 of the 2.5 / 3.0 D-4D (KD) faults

Side-by-side comparison

Comparison of 1.6 HDi and 2.5 / 3.0 D-4D (KD)
1.6 HDi2.5 / 3.0 D-4D (KD)
Technical data
TypeEngineEngine
FuelDieselDiesel
Displacement1,560 cm³—
TimingTiming belt (dry)Timing belt (dry)
Power75–120 hp102–190 hp
Production2004–2019[4][6][15][16][17][18][19]since 2000[10][20][21][22][23]
Reliability
Risk index (what is it?)71High risk63High risk
Documented faults75
Of high or critical severity23
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. Critical severity: Cracked pistons in the 3.0 D-4D (1KD-FTV)
  2. Critical severity: Leaking copper injector seats and blocked oil pickup
  3. High severity: Denso injector failure in the 3.0 D-4D (blockage and wear)
Most expensive documented repairup to €1,500Turbo failure through lack of lubrication (carbon deposits and union filter)Estimate[1][24][25][26][27][28][29]No reliable data
Which versions to buy
BuyRecommended versions
  • 1.6 HDi / e-HDi 92/95 8V (DV6D, 2009-2016)[30][31]
None
With cautionVersions to be cautious about
  • 1.6 HDi 75/90 16V (DV6BTED4 / DV6ATED4, 2004-2011)[2][3][30]
  • 1.6 HDi 110 16V DPF (DV6TED4, 2004-2011)[2][6][30]
  • 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][18][32]
  • 2.5 D-4D 102-120 hp (2KD-FTV, 2005-2011)[12]
  • 2.5 D-4D 144 hp (2KD-FTV, 2011-2016)[12][33]
  • 3.0 D-4D 163-166 hp (1KD-FTV, Land Cruiser J120, 2003-2006)[10][34]
  • 3.0 D-4D 173 hp (1KD-FTV, Euro 4, Land Cruiser J120, 2006-2009)[10][12][14]
  • 3.0 D-4D 171 hp (1KD-FTV, Hilux, 2005-2016)[11][33]
  • 3.0 D-4D 190 hp (1KD-FTV, Euro 5, Land Cruiser J150, 2010-2015)[13][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

1.6 HDi

See the 49 models with the 1.6 HDi

2.5 / 3.0 D-4D (KD)

Other comparisons

With the 1.6 HDi

With the 2.5 / 3.0 D-4D (KD)

Compare other engines

That is the comparison you are viewing: change one of the two engines.

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. Toyota 1KD-FTV 3.0 D-4D: ficha del motor, puntos débiles y fiabilidadMotorReviewer · Technical documentation · consulted 2 November 2026
  11. D4D Toyota HiLux common problems and solutionsUnsealed 4x4 · Motoring press · consulted 2 November 2026
  12. Toyota Hilux (2005 - 2012) used car reviewRAC Drive · Motoring press · published 17 February 2017 · consulted 2 November 2026
  13. Toyota Land Cruiser 150: Gebrauchtwagen-TestAUTO BILD · Motoring press · published 20 January 2020 · consulted 2 November 2026 · in German
  14. 1KD-FTV - piston crackToyota-Club.net · Other source · published October 2015 · consulted 2 November 2026
  15. Prueba de consumo (202): Peugeot Partner Outdoor 1.6-BlueHDi 120 CVkm77 · Motoring press · published 24 December 2015 · consulted 26 September 2026 · in Spanish
  16. Motor PSA DVWikipedia (es) · Other source · consulted 26 September 2026 · in Spanish
  17. Peugeot DV6TED4 engine: specifications and applicationsMyMotorList · Technical documentation · consulted 26 September 2026
  18. Fiabilité 1.6 BlueHDIFiches-Auto.fr · Motoring press · published 9 December 2021 · consulted 26 September 2026 · in French
  19. Motor Peugeot DV6FDTED: especificaciones y aplicacionesMyMotorList · Technical documentation · consulted 26 September 2026 · in Spanish
  20. Toyota KD engineWikipedia (inglés) · Other source · consulted 2 November 2026
  21. Allgemeine Daten zum Toyota Hilux Double Cab 3.0 D-4D Life 4x4 (12/11 - 08/14)ADAC Autokatalog · Technical documentation · consulted 2 November 2026 · in German
  22. Allgemeine Daten zum Toyota Hilux Single Cab 2.5 D-4D 4x2 (12/11 - 08/16)ADAC Autokatalog · Technical documentation · consulted 2 November 2026 · in German
  23. Allgemeine Daten zum Toyota Land Cruiser 3.0 D-4D (5-Türer, 01/11 - 10/13)ADAC Autokatalog · Technical documentation · consulted 2 November 2026 · in German
  24. Turbo intercambio Garrett 753420 motor 1.6HDi 1.6TDCI 1.6DFG Automoción · Technical documentation · consulted 26 September 2026 · in Spanish
  25. Turbo Garrett 753420 (GT1544V) para 1.6 HDI 110 CVAML Turbos · Technical documentation · consulted 26 September 2026 · in Spanish
  26. Tubo de engrase PSA 1.6 HDI 110 CV + filtro (OP10049COMP)Electromotor Lantejuela · Technical documentation · consulted 26 September 2026 · in Spanish
  27. ¿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
  28. 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
  29. ¿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
  30. Fiabilité 1.6 HDIFiches-Auto.fr · Motoring press · published 22 April 2024 · consulted 26 September 2026 · in French
  31. Essai, avis et fiabilité des 1.6 HDI 92 chFiches-Auto.fr · Motoring press · consulted 26 September 2026 · in French
  32. Adblue : problèmes en pagaille ?Fiches-Auto.fr · Motoring press · consulted 26 September 2026 · in French
  33. Vanliga fel: Toyota Hilux (guía de averías comunes)BilKoll · Other source · consulted 2 November 2026 · in another language
  34. Toyota Land Cruiser 125 D4-DAutofácil · Motoring press · published 2 February 2011 · consulted 2 November 2026 · in Spanish