2.2 dCi and 3.0 dCi V6 vs 2.0/2.2 D-4D: which engine is more reliable?

According to our risk index, the 2.2 dCi and 3.0 dCi V6 carries less risk than the 2.0/2.2 D-4D: 46/100 (moderate risk) versus 77/100 (very high risk). The 2.2 dCi and 3.0 dCi V6 has 2 documented serious faults, the main one being «3.0 dCi V6 overheating and expansion tank failures»; the 2.0/2.2 D-4D has 1 documented serious fault, the main one being «Warped cylinder head gasket and oil consumption on the 2.2 D-4D».

Risk index

2.2 dCi and 3.0 dCi V6

Moderate risk · 2 serious faults

Lower risk

Risk index

2.0/2.2 D-4D

Very high risk · 1 serious fault

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

Reviewed on 30 October 202618 sources How we work

Is the 2.2 dCi and 3.0 dCi V6 reliable?

Renault's big 2000s diesels, the 2.2 dCi (G9T) and the 3.0 V6 dCi (P9X), have a poor reputation among owners: big-end bearing failures are cited on the 2.2 and overheating on the V6. The sources are mainly forums and the press that reports them, with no official statistics.^[1][2][3]

See the 3 of the 2.2 dCi and 3.0 dCi V6 faults

Is the 2.0/2.2 D-4D reliable?

No: the 2.0/2.2 D-4D family is among the most problematic Toyota diesels. The 2.2 block (2AD-FTV and 2AD-FHV D-CAT) has a large number of cases of warped cylinder head gaskets and oil consumption or dilution in the Avensis, RAV4, Auris, Corolla Verso and Verso; the EGR valve and injectors fail frequently across the whole family, and the D-CAT filter clogs up if the car is not driven regularly on open roads.^[4][5][6][7]

See the 4 of the 2.0/2.2 D-4D faults

Side-by-side comparison

Comparison of 2.2 dCi and 3.0 dCi V6 and 2.0/2.2 D-4D
Item	2.2 dCi and 3.0 dCi V6	2.0/2.2 D-4D
Technical data
Type	Engine	Engine
Fuel	Diesel	Diesel
Displacement	2,188 cm³	—
Timing	Timing belt (dry)	Chain
Power	115–180 hp	116–177 hp
Production	2001–2009^[8][9]	2005–2018^{[10][11][12][13][14]}
Reliability
Risk index (what is it?)	46Moderate risk	77Very high risk
Documented faults	3	4
Of high or critical severity	2	1
Worst severity	Critical severity	Critical severity
Main faults	Critical severity: 3.0 dCi V6 overheating and expansion tank failures Critical severity: Big-end bearing failure in the 2.2 dCi (G9T) Medium severity: Blocked EGR valve and turbo and injector faults on the 2.2 dCi (G9T)	Critical severity: Warped cylinder head gasket and oil consumption on the 2.2 D-4D Medium severity: EGR valve clogged with soot Medium severity: Injector wear and failure
Most expensive documented repair	No reliable data	No reliable data
Which versions to buy
BuyRecommended versions	None	None
With cautionVersions to be cautious about	2.2 dCi 115-150 (G9T)^[2][3] 3.0 dCi V6 180 (P9X)^[1][15]	2.0 D-4D (1AD-FTV, 116-126 hp, 2005-2018)^[4][16]
AvoidVersions to avoid	None	2.2 D-4D (2AD-FTV, 136-150 hp, 2005-2015)^{[4][5][6][7][16][17][18]} 2.2 D-4D D-CAT (2AD-FHV, 174-177 hp, 2005-2015)^[5][16][17]

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

Cars that each one is fitted to

2.2 dCi and 3.0 dCi V6

2.0/2.2 D-4D

See the 9 models with the 2.0/2.2 D-4D

Other comparisons

With the 2.2 dCi and 3.0 dCi V6

With the 2.0/2.2 D-4D

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.

Renault Espace et Vel Satis : le 3.0 V6 dCi surchauffeL'argus · Motoring press · published 22 June 2010 · consulted 5 October 2026 · in French
Laguna II : remplacement préventif coussinet de bielle 2.2 dCiPlanèteRenault (foro) · Owners' forum · consulted 5 October 2026 · in French
Avantime : casse moteur 2.2 dCiPlanèteRenault (foro) · Owners' forum · consulted 5 October 2026 · in French
Toyota Avensis (2003-2009) : fiabilité, pannes et rappelsFiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
Toyota Avensis (2008-2018) : fiabilité, pannes et rappelsFiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
Toyota RAV4 (2006-2012) : fiabilité, pannes et rappelsFiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
Toyota RAV4 (2013-2019) : fiabilité, pannes et rappelsFiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
Renault G-Type engineWikipedia (en) · Other source · consulted 5 October 2026
Renault Vel SatisWikipedia (fr) · Other source · consulted 5 October 2026 · in French
Toyota AD engineWikipedia · Other source · consulted 27 September 2026
Toyota AvensisWikipedia · Other source · consulted 27 September 2026
Toyota AvensisWikipedia (alemán) · Other source · consulted 27 September 2026 · in German
Toyota AurisWikipedia · Other source · consulted 27 September 2026
Toyota VersoWikipedia · Other source · consulted 27 September 2026
Vel Satis I : ma Vel Satis 3.0 dCi Initiale a des problèmesPlanèteRenault (foro) · Owners' forum · consulted 5 October 2026 · in French
Toyota Auris (2007-2012) : fiabilité, pannes et rappelsFiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
Toyota Corolla Verso : fiabilité, pannes et rappelsFiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
Toyota Verso : fiabilité, pannes et rappelsFiches-auto.fr · Motoring press · consulted 27 September 2026 · in French