MZR-CD vs 2.2 HDi: which engine is more reliable?

According to our risk index, the 2.2 HDi carries less risk than the MZR-CD: 48/100 (moderate risk) versus 64/100 (high risk). The MZR-CD has 3 documented serious faults, the main one being «Timing chain stretch on the 2.2 MZR-CD»; the 2.2 HDi has 3 documented serious faults, the main one being «DPF clogging with additive, especially on the 128-138 hp version».

Risk index

MZR-CD

High risk · 3 serious faults

Risk index

2.2 HDi

Moderate risk · 3 serious faults

Lower risk

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

Reviewed on 27 September 202622 sources How we work

Is the MZR-CD reliable?

The MZR-CD is Mazda's most widespread diesel between 2002 and 2013, fitted to the Mazda3, Mazda6, Mazda5 and CX-7. It is sensitive to short journeys: the injector seals and incomplete DPF regenerations can dilute the oil, and the EGR and intake build up carbon. The 2.2-litre redesign (from 2008), with a timing chain instead of a belt, adds the risk of that chain stretching and damaging the engine.^[1][2][3][4]

See the 4 of the MZR-CD faults

Is the 2.2 HDi reliable?

This is a diesel derived from the 2.0 HDi that PSA and Ford shared in large saloons and MPVs (407, 607, 807, C5, C6, C8) and that Land Rover and Ford used under their own names (TDCi, TD4, SD4) in the Mondeo IV, the Freelander 2 and the first Evoque. According to fiches-auto it does not suffer chronically from the turbo or dual-mass flywheel problems of smaller HDi engines, but the 128-138 hp version does have a recurring problem of DPF clogging.^[5][6][7][8]

See the 4 of the 2.2 HDi faults

Side-by-side comparison

Comparison of MZR-CD and 2.2 HDi
Item	MZR-CD	2.2 HDi
Technical data
Type	Engine	Engine
Fuel	Diesel	Diesel
Displacement	—	2,179 cm³
Timing	Timing belt (dry)	Timing belt (dry)
Power	105–185 hp	128–204 hp
Production	2002–2013^{[9][10][11][12][13]}	2000–2015^{[5][7][14][15][16]}
Reliability
Risk index (what is it?)	64High risk	48Moderate risk
Documented faults	4	4
Of high or critical severity	3	3
Worst severity	Critical severity	High severity
Main faults	Critical severity: Timing chain stretch on the 2.2 MZR-CD High severity: Oil dilution from leaking injector seals and DPF regenerations High severity: Turbocharger wear or failure	High severity: DPF clogging with additive, especially on the 128-138 hp version High severity: Turbo faults, somewhat more frequent on the sequential twin-turbo versions High severity: Piezo injector wear and failure
Most expensive documented repair	No reliable data	No reliable data
Which versions to buy
BuyRecommended versions	None	2.2 HDi 150-156 (single variable-geometry turbo, 2006-2012)^[17][18]
With cautionVersions to be cautious about	2.0 MZR-CD 121-143 (RF, 2002-2005, no DPF)^[1][3][19] 2.0 MZR-CD 105-143 (RF, 2005-2010, with DPF)^{[1][3][19][20]} 2.2 MZR-CD 125-185 (R2, 2008-2013)^{[2][4][21][22]}	2.2 HDi 128-138 (DW12 TED4, single turbo, 2000-2006)^[8] 2.2 HDi 170-175 twin-turbo (DW12 BTED4, 2005-2010)^[8][15] 2.2 HDi 190-204 twin-turbo (DW12 C, 2010-2015)^[15]
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

MZR-CD

2.2 HDi

See the 13 models with the 2.2 HDi

Other comparisons

With the MZR-CD

With the 2.2 HDi

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Sources

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

Fiabilité Mazda 6 (2002-2008)Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
Fiabilité Mazda 6 (2008-2013)Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
Mazda 6 I: Bekannte Probleme und Schwachstellengebrauchtwagenberater.de · Motoring press · consulted 27 September 2026 · in German
Mazda 6 II: Bekannte Probleme und Schwachstellengebrauchtwagenberater.de · Motoring press · consulted 27 September 2026 · in German
PSA EW/DW engineWikipedia (inglés) · Other source · consulted 27 September 2026
Ford MondeoWikipedia (francés) · Other source · consulted 27 September 2026 · in French
Land Rover FreelanderWikipedia (francés) · Other source · consulted 27 September 2026 · in French
Essai, avis et fiabilité des 2,2 HDI 136 chevauxFiches-Auto · Motoring press · consulted 27 September 2026 · in French
Mazda diesel enginesWikipedia (inglés) · Other source · consulted 27 September 2026
Mazda6Wikipedia (alemán) · Other source · consulted 27 September 2026 · in German
Mazda3Wikipedia (alemán) · Other source · consulted 27 September 2026 · in German
Mazda5Wikipedia (alemán) · Other source · consulted 27 September 2026 · in German
Mazda CX-7Wikipedia (alemán) · Other source · consulted 27 September 2026 · in German
Range Rover EvoqueWikipedia (inglés) · Other source · consulted 27 September 2026
Essai, avis et fiabilité des 2,2 HDI 204 chevauxFiches-Auto · Motoring press · consulted 27 September 2026 · in French
Essai Citroën C5 Exclusive + 2.2 HDI 200 TourerActu Automobile · Motoring press · published 2011 · consulted 27 September 2026 · in French
Essai Peugeot 4007 2.2 HDi DCS 6Caradisiac · Motoring press · published 7 April 2010 · consulted 27 September 2026 · in French
Citroën C-CrosserWikipedia (español) · Other source · consulted 27 September 2026 · in Spanish
Fiabilité Mazda 3 (2003-2009)Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
Japanische Zuverlässigkeit? Ärger mit den Dieseln von Mazda und Toyotagebrauchtwagenberater.de · Motoring press · consulted 27 September 2026 · in German
Fiabilité Mazda 3 (2009-2013)Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
Mazda 3 II (2009-2013): Typische Probleme & Schwachstellengebrauchtwagenberater.de · Motoring press · consulted 27 September 2026 · in German