1.4 HDi vs 2.2 dCi and 3.0 dCi V6: which engine is more reliable?

According to our risk index, the 1.4 HDi carries less risk than the 2.2 dCi and 3.0 dCi V6: 43/100 versus 46/100 (both moderate risk). The 1.4 HDi has 1 documented serious fault, the main one being «Timing belt and water pump»; 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».

Risk index

1.4 HDi

Moderate risk · 1 serious fault

Lower risk

Risk index

2.2 dCi and 3.0 dCi V6

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 30 October 202612 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 2.2 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.^[4][5][6]

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

Side-by-side comparison

Comparison of 1.4 HDi and 2.2 dCi and 3.0 dCi V6
Item	1.4 HDi	2.2 dCi and 3.0 dCi V6
Technical data
Type	Engine	Engine
Fuel	Diesel	Diesel
Displacement	1,399 cm³	2,188 cm³
Timing	Timing belt (dry)	Timing belt (dry)
Power	54–92 hp	115–180 hp
Production	2001–2010^[1][7][8][9]	2001–2009^[10][11]
Reliability
Risk index (what is it?)	43Moderate risk	46Moderate risk
Documented faults	5	3
Of high or critical severity	1	2
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: 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)
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][9]	2.2 dCi 115-150 (G9T)^[5][6] 3.0 dCi V6 180 (P9X)^[4][12]
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

2.2 dCi and 3.0 dCi V6

Other comparisons

With the 1.4 HDi

With the 2.2 dCi and 3.0 dCi V6

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
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
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
Renault G-Type engineWikipedia (en) · Other source · consulted 5 October 2026
Renault Vel SatisWikipedia (fr) · Other source · consulted 5 October 2026 · in French
Vel Satis I : ma Vel Satis 3.0 dCi Initiale a des problèmesPlanèteRenault (foro) · Owners' forum · consulted 5 October 2026 · in French