TDV6 / SDV6 vs 2.5 / 3.0 D-4D (KD): which engine is more reliable?

According to our risk index, the TDV6 / SDV6 carries less risk than the 2.5 / 3.0 D-4D (KD): 46/100 (moderate risk) versus 63/100 (high risk). The TDV6 / SDV6 has 2 documented serious faults, the main one being «Crankshaft breakage and spinning main bearing shells»; 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

TDV6 / SDV6

Moderate risk · 2 serious faults

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 202616 sources How we work

Is the TDV6 / SDV6 reliable?

The Land Rover and Jaguar TDV6/SDV6 diesel V6 engines, shared with Peugeot and Citroën, have a serious documented fault: crankshaft and main bearing shells on the 3.0, and the belt-driven oil pump on the 2.7. Insist on a service history and weigh up the repair cost before buying.^[1][2][3]

See the 3 of the TDV6 / SDV6 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 TDV6 / SDV6 and 2.5 / 3.0 D-4D (KD)
Item	TDV6 / SDV6	2.5 / 3.0 D-4D (KD)
Technical data
Type	Engine	Engine
Fuel	Diesel	Diesel
Displacement	2,720 cm³	—
Timing	Wet belt (belt-in-oil)	Timing belt (dry)
Power	188–302 hp	102–190 hp
Production	2004–2018^[9]	since 2000^{[4][10][11][12][13]}
Reliability
Risk index (what is it?)	46Moderate risk	63High risk
Documented faults	3	5
Of high or critical severity	2	3
Worst severity	Critical severity	Critical severity
Main faults	Critical severity: Crankshaft breakage and spinning main bearing shells Critical severity: Broken oil pump housing and timing belt jumping on the 2.7 Medium severity: Turbo and pneumatic actuator failure on the 3.0 TDV6/SDV6	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	2.7 TDV6 (276DT/DT17, 2004-2010)^[3][14] 3.0 TDV6/SDV6 (306DT, 2009-2018)^[1][2]	2.5 D-4D 102-120 hp (2KD-FTV, 2005-2011)^[6] 2.5 D-4D 144 hp (2KD-FTV, 2011-2016)^[6][15] 3.0 D-4D 163-166 hp (1KD-FTV, Land Cruiser J120, 2003-2006)^[4][16] 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][15] 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

TDV6 / SDV6

See the 15 models with the TDV6 / SDV6

2.5 / 3.0 D-4D (KD)

Other comparisons

With the TDV6 / SDV6

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

Compare other engines

First engine

Second engine

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.

Land Rover Discovery TDV6 engine failures making headlinesLandyOnline · Other source · published October 2015 · consulted 5 October 2026
Land Rover & Jaguar SDV6/TDV6 Crankshaft RepairJLR Engines · Technical documentation · consulted 5 October 2026
Land Rover 2.7 TDV6 Timing Belt Replacement GuideBudget Parts (roverparts.eu) · Technical documentation · consulted 5 October 2026
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 AJD-V6/PSA DT17 engineWikipedia · Other source · consulted 5 October 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
TdV6 Timing BeltLes Richmond Automotive (lrautomotive.com.au) · Technical documentation · consulted 5 October 2026
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