2.4 JTD / JTDm Multijet vs 2.2 TD4 / SD4: which engine is more reliable?

According to our risk index, the 2.4 JTD / JTDm Multijet carries less risk than the 2.2 TD4 / SD4: 25/100 versus 32/100 (both moderate risk). The 2.4 JTD / JTDm Multijet has no documented serious faults; the 2.2 TD4 / SD4 has 2 documented serious faults, the main one being «Coolant leak from the EGR valve cooler».

Risk index

2.4 JTD / JTDm Multijet

Moderate risk · 0 serious faults

Lower risk

Risk index

2.2 TD4 / SD4

Moderate risk · 2 serious faults

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

Reviewed on 8 October 202617 sources How we work

Is the 2.4 JTD / JTDm Multijet reliable?

The five-cylinder 2.4 JTD/JTDm is powerful but more delicate in its 20V version. Auto Świat says the 10V rarely breaks down on its own; on the 20V, owner testimonies for the 200 and 210 hp Alfa 159 pile up mentions of the EGR and particulate filter, and the 200 hp had the manifold flap failure that Fiat corrected in 2007.^[1][2]

See the 4 of the 2.4 JTD / JTDm Multijet faults

Is the 2.2 TD4 / SD4 reliable?

This is the 2.2-litre diesel of the Freelander 2, the first Evoque, the 2014-2015 Discovery Sport and the Jaguar XF 2.2D. The sources consulted do not describe it as a problematic engine, but they point to three things: the EGR cooler, the DPF in urban use, and replacing the belt along with the water pump.^[3][4][5]

See the 3 of the 2.2 TD4 / SD4 faults

Side-by-side comparison

Comparison of 2.4 JTD / JTDm Multijet and 2.2 TD4 / SD4
Item	2.4 JTD / JTDm Multijet	2.2 TD4 / SD4
Technical data
Type	Engine	Engine
Fuel	Diesel	Diesel
Displacement	2,387 cm³	2,179 cm³
Timing	Timing belt (dry)	Timing belt (dry)
Power	136–210 hp	150–200 hp
Production	1998–2011^{[1][6][7][8][9]}	2006–2015^{[10][11][12][13]}
Reliability
Risk index (what is it?)	25Moderate risk	32Moderate risk
Documented faults	4	3
Of high or critical severity	0	2
Worst severity	Medium severity	Critical severity
Main faults	Medium severity: Intake manifold flap failure (swirl flaps) Medium severity: Clogged or faulty EGR valve on the 2.4 JTD and JTDm Medium severity: Injector failure and diesel leaks on the 2.4 JTDm	High severity: Coolant leak from the EGR valve cooler Critical severity: Timing belt failure and water pump failure Medium severity: Diesel particulate filter (DPF) clogged by urban use
Most expensive documented repair	up to €800Clogged or faulty EGR valve on the 2.4 JTD and JTDmPublished figure^[14]	No reliable data
Which versions to buy
BuyRecommended versions	2.4 JTD 10V (136-150 hp, 1998-2007)^[1][7][15]	None
With cautionVersions to be cautious about	2.4 JTDm / Multijet 20V (175-185 hp, 2003-2009)^[1][15] 2.4 JTDm / Multijet 20V 200 hp (2005-2011)^[1][2] 2.4 JTDm 20V 210 hp (Alfa Romeo, 2007-2010)^{[1][2][16][17]}	2.2 TD4 / eD4 150-160 hp^[3][5][13] 2.2 SD4 190-200 hp^[4]
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

2.4 JTD / JTDm Multijet

See the 7 models with the 2.4 JTD / JTDm Multijet

2.2 TD4 / SD4

Other comparisons

With the 2.4 JTD / JTDm Multijet

With the 2.2 TD4 / SD4

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Sources

Every fact on this page links to its source. If you find an error, let us know.

Silnik 2.4 JTD: mocny i trwały, ale czasem też kapryśnyAuto Świat · Motoring press · published 26 September 2011 · consulted 8 October 2026 · in another language
Fiabilité Alfa-romeo 159 (2005-2012) (428 témoignages)Fiches-auto.fr · Owners' forum · consulted 8 October 2026 · in French
Land Rover Freelander Mk2 common problems 2006-2015Haynes · Technical documentation · published December 2022 · consulted 5 October 2026
Test / Avis Land Rover Range Rover Evoque 2.2 SD4 190 ch (2011-2018)Fiches-auto · Owners' forum · consulted 5 October 2026 · in French
Problemas Land Rover Freelander 2Totalrenting · Other source · consulted 5 October 2026 · in Spanish
Fiat JTD engineWikipedia · Other source · consulted 8 October 2026
Alfa Romeo Brera (guía del taller)The Alfa Workshop · Other source · consulted 8 October 2026
Alfa Romeo 159Wikipedia (alemán) · Other source · consulted 8 October 2026 · in German
SCHAEFFLER - ALFA ROMEO 159 (939_) 2.4 JTDM (939AXD)Rolling Kft. (catálogo) · Technical documentation · consulted 8 October 2026
Land Rover FreelanderWikipedia (inglés) · Other source · consulted 5 October 2026
Land Rover Discovery SportWikipedia (inglés) · Other source · consulted 5 October 2026
Jaguar XF (X250)Wikipedia (inglés) · Other source · consulted 5 October 2026
How to fit a timing belt on a Land Rover Freelander 2Professional Motor Mechanic (PMM) · Motoring press · published 22 January 2018 · consulted 5 October 2026
¿Qué precio tiene cambiar una válvula EGR?RACE (Real Automóvil Club de España) · Other source · published 17 June 2024 · consulted 8 October 2026 · in Spanish
Fiabilité Alfa-romeo 156: pannes par motorisation (2.4 JTD)Fiches-auto.fr · Owners' forum · consulted 8 October 2026 · in French
Alfa Romeo 159 2.4 JTD 210 ch 93 000 km (2008, Ti): avis d'un propriétaireFiches-auto.fr · Owners' forum · published 26 January 2013 · consulted 8 October 2026 · in French
Guía de compra del Alfa Romeo 159 de segunda manoDiariomotor · Motoring press · published 9 February 2024 · consulted 8 October 2026 · in Spanish