1.6 CRDi vs 2.0/2.2 D-4D: which engine is more reliable?

According to our risk index, the 1.6 CRDi carries less risk than the 2.0/2.2 D-4D: 70/100 (high risk) versus 77/100 (very high risk). The 1.6 CRDi has 4 documented serious faults, the main one being «MHSG belt tensioner and crankshaft pulley failure (48V mild hybrid)»; 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

1.6 CRDi

High risk · 4 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 27 September 202623 sources How we work

Is the 1.6 CRDi reliable?

The U2 D4FB (2009-2018) is a generally robust diesel if well maintained, with known turbo failures in the early units and timing chain problems from 120,000-150,000 km. Its successor, the Smartstream (U3 D4FE, from 2018), has a good reputation, except in the 48V mild hybrid version, which has a belt tensioner and crankshaft pulley fault that can destroy the engine.^[1][2][3]

See the 6 of the 1.6 CRDi 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 1.6 CRDi and 2.0/2.2 D-4D
Item	1.6 CRDi	2.0/2.2 D-4D
Technical data
Type	Engine	Engine
Fuel	Diesel	Diesel
Displacement	1,582 cm³	—
Timing	Chain	Chain
Power	90–136 hp	116–177 hp
Production	since 2009^{[1][8][9][10]}	2005–2018^{[11][12][13][14][15]}
Reliability
Risk index (what is it?)	70High risk	77Very high risk
Documented faults	6	4
Of high or critical severity	4	1
Worst severity	Critical severity	Critical severity
Main faults	Critical severity: MHSG belt tensioner and crankshaft pulley failure (48V mild hybrid) Critical severity: Timing chain stretch High severity: Premature variable-geometry turbo (VGT) failure	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	up to €1,800Particulate filter (DPF) blocked in urban usePublished figure^[16]	No reliable data
Which versions to buy
BuyRecommended versions	Smartstream 1.6 CRDi U3 (D4FE, 115-136 hp, without mild hybrid, from 2018)^[2][17]	None
With cautionVersions to be cautious about	1.6 CRDi U2 (D4FB, 90-136 hp, sold in Spain from 2010 to ~2018)^[1][18][19] Smartstream 1.6 CRDi 48V mild hybrid (D4FE MHEV, 136 hp, from ~2019)^[3][20]	2.0 D-4D (1AD-FTV, 116-126 hp, 2005-2018)^[4][21]
AvoidVersions to avoid	None	2.2 D-4D (2AD-FTV, 136-150 hp, 2005-2015)^{[4][5][6][7][21][22][23]} 2.2 D-4D D-CAT (2AD-FHV, 174-177 hp, 2005-2015)^[5][21][22]

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

Cars that each one is fitted to

1.6 CRDi

See the 16 models with the 1.6 CRDi

2.0/2.2 D-4D

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

Other comparisons

With the 1.6 CRDi

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.

Motor Kia y Hyundai 1.6 CRDI (D4FB): ficha tecnica, problemas y tuningMotordinámico · Technical documentation · consulted 26 September 2026 · in Spanish
Kia Ceed III: Bekannte Probleme & RückrufeGebrauchtwagenberater · Other source · consulted 26 September 2026 · in German
Kia / Hyundai 1.6 CRDi MHEV Engine FailuresDOHC (especialista en reconstrucción de motores) · Technical documentation · consulted 26 September 2026
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
Hyundai U engineWikipedia · Other source · consulted 26 September 2026
Hyundai Smartstream engineWikipedia · Other source · consulted 26 September 2026
Hyundai i30 Kombi 1.6 CRDi 48V-Mildhybrid Trend (10/20-01/22): Technische Daten, Bilder, PreiseADAC · Technical documentation · consulted 26 September 2026 · in German
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
Kia Ceed 1.6 Crdi Problemas | Fallos y averías más frecuentesTotalRenting · Other source · consulted 26 September 2026 · in Spanish
Kia Ceed im TÜV-Check 2026: Schwachstellen, Mängel und ProblemeAUTO BILD · Motoring press · published 2026 · consulted 26 September 2026 · in German
Kia and Hyundai 1.6 CRDI (D4FB) engineEngineDNA · Other source · consulted 26 September 2026
Best Hyundai Kia 1.6 CRDI Mods & Upgrades Guide to D4FB TuningTorqueCars · Other source · consulted 26 September 2026
KIA SPORTAGE 2023 - vehicle recallsGOV.UK (Driver and Vehicle Standards Agency) · Official body · consulted 26 September 2026
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