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

According to our risk index, the 1.4 HDi carries less risk than the 2.5 / 3.0 D-4D (KD): 43/100 (moderate risk) versus 63/100 (high risk). The 1.4 HDi has 1 documented serious fault, the main one being «Timing belt and water pump»; 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

1.4 HDi

Moderate risk · 1 serious fault

Lower risk

Risk index

2.5 / 3.0 D-4D (KD)

High risk · 3 serious faults

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

Reviewed on 2 November 202617 sources How we work

Is the 1.4 HDi reliable?

It is a small diesel that is generally reliable, but with a very well-documented weakness: the injectors tend to lose their seal over time and let diesel escape. The turbo and the EGR valve also fail on a noticeable minority of units, and there are isolated cases of the crankshaft damper pulley failing at very high mileages. The timing belt does not seem to cause more problems than on any diesel of its era if it is changed on time.^[1][2][3]

See the 5 of the 1.4 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.^{[4][5][6][7][8]}

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

Side-by-side comparison

Comparison of 1.4 HDi and 2.5 / 3.0 D-4D (KD)
Item	1.4 HDi	2.5 / 3.0 D-4D (KD)
Technical data
Type	Engine	Engine
Fuel	Diesel	Diesel
Displacement	1,399 cm³	—
Timing	Timing belt (dry)	Timing belt (dry)
Power	54–92 hp	102–190 hp
Production	2001–2010^{[1][9][10][11]}	since 2000^{[4][12][13][14][15]}
Reliability
Risk index (what is it?)	43Moderate risk	63High risk
Documented faults	5	5
Of high or critical severity	1	3
Worst severity	High severity	Critical severity
Main faults	Medium severity: Injectors that lose their seal and let diesel escape High severity: Timing belt and water pump Medium severity: Premature turbo wear from poor lubrication	Critical severity: Cracked pistons in the 3.0 D-4D (1KD-FTV) Critical severity: Leaking copper injector seats and blocked oil pickup High severity: Denso injector failure in the 3.0 D-4D (blockage and wear)
Most expensive documented repair	No reliable data	No reliable data
Which versions to buy
BuyRecommended versions	None	None
With cautionVersions to be cautious about	1.4 HDi/TDCi 54/68/70 8V (DV4TD, 2001-2009)^[2][3] 1.4 HDi 90/92 16V (DV4TED4, 2002-2009)^[2][11]	2.5 D-4D 102-120 hp (2KD-FTV, 2005-2011)^[6] 2.5 D-4D 144 hp (2KD-FTV, 2011-2016)^[6][16] 3.0 D-4D 163-166 hp (1KD-FTV, Land Cruiser J120, 2003-2006)^[4][17] 3.0 D-4D 173 hp (1KD-FTV, Euro 4, Land Cruiser J120, 2006-2009)^[4][6][8] 3.0 D-4D 171 hp (1KD-FTV, Hilux, 2005-2016)^[5][16] 3.0 D-4D 190 hp (1KD-FTV, Euro 5, Land Cruiser J150, 2010-2015)^[7][8]
AvoidVersions to avoid	None	None

Severity of each fault: green, low; amber, medium; red, high; dark red, critical. How we rate them

Cars that each one is fitted to

1.4 HDi

See the 12 models with the 1.4 HDi

2.5 / 3.0 D-4D (KD)

Other comparisons

With the 1.4 HDi

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

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.

Motor PSA DVWikipedia (es) · Other source · consulted 27 September 2026 · in Spanish
Essai, avis et fiabilité des 1.4 HDI 68 chFiches-Auto.fr · Motoring press · consulted 27 September 2026 · in French
Essai, avis et fiabilité des 1.4 HDI 70 chFiches-Auto.fr · Motoring press · consulted 27 September 2026 · in French
Toyota 1KD-FTV 3.0 D-4D: ficha del motor, puntos débiles y fiabilidadMotorReviewer · Technical documentation · consulted 2 November 2026
D4D Toyota HiLux common problems and solutionsUnsealed 4x4 · Motoring press · consulted 2 November 2026
Toyota Hilux (2005 - 2012) used car reviewRAC Drive · Motoring press · published 17 February 2017 · consulted 2 November 2026
Toyota Land Cruiser 150: Gebrauchtwagen-TestAUTO BILD · Motoring press · published 20 January 2020 · consulted 2 November 2026 · in German
1KD-FTV - piston crackToyota-Club.net · Other source · published October 2015 · consulted 2 November 2026
Ford Duratorq engineWikipedia (en) · Other source · consulted 27 September 2026
Peugeot DV4TD engine: specifications and applicationsMyMotorList · Technical documentation · consulted 27 September 2026
Peugeot DV4TED4 engine: specifications and applicationsMyMotorList · Technical documentation · consulted 27 September 2026
Toyota KD engineWikipedia (inglés) · Other source · consulted 2 November 2026
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
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
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
Vanliga fel: Toyota Hilux (guía de averías comunes)BilKoll · Other source · consulted 2 November 2026 · in another language
Toyota Land Cruiser 125 D4-DAutofácil · Motoring press · published 2 February 2011 · consulted 2 November 2026 · in Spanish