2.0 HDi vs 1.9 TDI: which engine is more reliable?

According to our risk index, the 2.0 HDi carries less risk than the 1.9 TDI: 55/100 versus 66/100 (both high risk). The 2.0 HDi has 2 documented serious faults, the main one being «Variable-geometry turbo failures (actuator, sensors and clogging)»; the 1.9 TDI has 3 documented serious faults, the main one being «Big-end bearing failure».

Risk index

2.0 HDi

High risk · 2 serious faults

Lower risk

Risk index

1.9 TDI

High risk · 3 serious faults

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

Reviewed on 27 September 202621 sources How we work

Is the 2.0 HDi reliable?

It is a robust diesel in its simplest 90 hp version, but the 136 to 140 hp generation with a DPF (2004-2011) concentrates the engine's problems: turbo, DPF, EGR and, above all, a dual-mass flywheel that fails very often. The BlueHDi engines (from 2013) are mechanically more reliable, but add an AdBlue tank that can crystallise; the OCU (Spanish consumer organisation) has reported this fault in Spain and Stellantis covers it with a compensation programme.^[1][2][3][4]

See the 5 of the 2.0 HDi faults

Is the 1.9 TDI reliable?

It depends a lot on the version. The rotary pump (1996-2003, codes ALH and AGR among others) has a reputation for great durability. The unit injector system (1999-2010) improves performance and emissions, but has more documented faults: dual-mass flywheel, turbo, EGR valve and, above all in the 105 hp version, cases of broken big-end bearings.^{[5][6][7][8][9][10][11]}

See the 6 of the 1.9 TDI faults

Side-by-side comparison

Comparison of 2.0 HDi and 1.9 TDI
Item	2.0 HDi	1.9 TDI
Technical data
Type	Engine	Engine
Fuel	Diesel	Diesel
Displacement	1,997 cm³	1,896 cm³
Timing	Timing belt (dry)	Timing belt (dry)
Power	90–180 hp	75–150 hp
Production	1999–2021^{[1][12][13][14][15]}	1996–2010^{[5][16][17][18][19]}
Reliability
Risk index (what is it?)	55High risk	66High risk
Documented faults	5	6
Of high or critical severity	2	3
Worst severity	High severity	Critical severity
Main faults	High severity: Variable-geometry turbo failures (actuator, sensors and clogging) High severity: DPF clogging on additive-type systems (Eolys/cerine) Medium severity: Premature dual-mass flywheel wear (from 107/110 hp)	Critical severity: Big-end bearing failure High severity: Seized or broken variable-geometry turbo Medium severity: EGR valve clogged with carbon
Most expensive documented repair	up to €1,200AdBlue tank crystallisation and failures (BlueHDi)Published figure^[3][4][20]	up to €1,500Premature wear of the dual-mass flywheel and clutchPublished figure^[21]
Which versions to buy
BuyRecommended versions	2.0 HDi 90 (DW10TD, 1999-2005)^[1] 2.0 HDi 150/163 DPF (DW10C / DW10CTED4, 2007-2013)^[1]	1.9 TDI rotary pump (VP37, 1996-2003)^[6]
With cautionVersions to be cautious about	2.0 HDi 107/110 (DW10ATED / DW10ATED4, 2000-2008)^[1] 2.0 HDi 136/138/140 DPF (DW10BTED4, 2004-2011)^[1] 2.0 BlueHDi 120/150/163/180 (DW10FE / DW10FD / DW10FC, 2013-2021)^[1][2][3][4]	1.9 TDI high-performance unit injector (101-150 hp, 1999-2003)^[8][21] 1.9 TDI unit injector 75-105 hp (2003-2010)^[7][11]
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

2.0 HDi

See the 20 models with the 2.0 HDi

1.9 TDI

See the 20 models with the 1.9 TDI

Other comparisons

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With the 1.9 TDI

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Sources

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

Fiabilité du 2.0 HDIFiches-Auto · Motoring press · consulted 27 September 2026 · in French
AdBlue : problèmes en pagailleFiches-Auto · Motoring press · consulted 27 September 2026 · in French
Más problemas para Stellantis: ahora tendrá que indemnizar también a los afectados por el AdBlueAutopista · Motoring press · published 30 December 2024 · consulted 27 September 2026 · in Spanish
El fallo que afecta a cientos de coches y que ahora la OCU denuncia para reclamar indemnizacionesAutopista · Motoring press · published 29 May 2023 · consulted 27 September 2026 · in Spanish
List of discontinued Volkswagen Group diesel enginesWikipedia (inglés) · Other source · consulted 27 September 2026
Les TDI sont-ils fiables ?fiches-auto.fr · Motoring press · published 15 December 2016 · consulted 27 September 2026 · in French
Tous les problèmes sur Volkswagen Golf Vfiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
Tous les problèmes sur Volkswagen Passat (1996-2004)fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
Tous les problèmes sur Volkswagen Passat (2004-2010)fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
Tous les problèmes sur Škoda Octavia (1997-2004)fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
Tous les problèmes sur Škoda Octavia (2004-2012)fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
PSA EW/DW engineWikipedia (inglés) · Other source · consulted 27 September 2026
Peugeot 307Wikipedia (español) · Other source · consulted 27 September 2026 · in Spanish
Peugeot 3008Wikipedia (español) · Other source · consulted 27 September 2026 · in Spanish
Citroën C4 PicassoWikipedia (español) · Other source · consulted 27 September 2026 · in Spanish
Volkswagen Golf IVWikipedia (alemán) · Other source · consulted 27 September 2026 · in German
Volkswagen Golf VWikipedia (alemán) · Other source · consulted 27 September 2026 · in German
Volkswagen TouranWikipedia (inglés) · Other source · consulted 27 September 2026
Volkswagen CaddyWikipedia (inglés) · Other source · consulted 27 September 2026
Aditivo AdBlue: qué debes usar para evitar una reparación de 2.000 euros en tu coche diéselAutopista · Motoring press · published 1 April 2026 · consulted 27 September 2026 · in Spanish
Tous les problèmes sur Volkswagen Golf IVfiches-auto.fr · Motoring press · consulted 27 September 2026 · in French