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

According to our risk index, the 2.0 BlueHDi carries less risk than the 1.9 TDI: 45/100 (moderate risk) versus 66/100 (high risk). The 2.0 BlueHDi has 2 documented serious faults, the main one being «DPF clogging on short journeys»; the 1.9 TDI has 3 documented serious faults, the main one being «Big-end bearing failure».

Risk index

2.0 BlueHDi

Moderate 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 202619 sources How we work

Is the 2.0 BlueHDi reliable?

The 2.0 BlueHDi is mechanically one of the sturdiest PSA/Stellantis diesels: in the samples available for its 150 to 180 hp versions, the turbo, DPF, EGR and injectors fail noticeably less often than on earlier generations of the same engine from before 2013. Its documented weak point is the AdBlue tank, a fault so widespread that Stellantis compensates affected owners without a definitive fix.^[1][2][3][4]

See the 4 of the 2.0 BlueHDi 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 BlueHDi and 1.9 TDI
Item	2.0 BlueHDi	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	150–180 hp	75–150 hp
Production	2013–2021^[12][13][14]	1996–2010^{[5][15][16][17][18]}
Reliability
Risk index (what is it?)	45Moderate risk	66High risk
Documented faults	4	6
Of high or critical severity	2	3
Worst severity	High severity	Critical severity
Main faults	Medium severity: AdBlue (SCR) tank and pump failure High severity: DPF clogging on short journeys High severity: Injector and high-pressure pump wear	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 €1,500AdBlue (SCR) tank and pump failurePublished figure^[3][4]	up to €1,500Premature wear of the dual-mass flywheel and clutchPublished figure^[19]
Which versions to buy
BuyRecommended versions	None	1.9 TDI rotary pump (VP37, 1996-2003)^[6]
With cautionVersions to be cautious about	2.0 BlueHDi 150/163 (DW10FC/DW10FD, 2013-2020)^[1][3][4] 2.0 BlueHDi 177/180 (DW10FC/DW10FD, 2013-2021)^[1][2]	1.9 TDI high-performance unit injector (101-150 hp, 1999-2003)^[8][19] 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 BlueHDi

See the 13 models with the 2.0 BlueHDi

1.9 TDI

See the 20 models with the 1.9 TDI

Other comparisons

With the 2.0 BlueHDi

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
Fiabilité Opel Grandland X (2017-2024), pannes et témoignagesFiches-Auto · Motoring press · consulted 27 September 2026 · in French
AdBlue : problèmes en pagailleFiches-Auto · Motoring press · consulted 27 September 2026 · in French
Stellantis amplía las compensaciones por los problemas técnicos de sus depósitos AdBlueMinisterio de Derechos Sociales, Consumo y Agenda 2030 · Official body · 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 308Wikipedia (inglés) · Other source · consulted 27 September 2026
Peugeot 308 5p GT 2.0 BlueHDi 180 S&S EAT8 (2017-2019) | Precio y ficha técnicakm77 · Motoring press · 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
Tous les problèmes sur Volkswagen Golf IVfiches-auto.fr · Motoring press · consulted 27 September 2026 · in French