1.6 CDTI vs 2.0 BlueHDi: which engine is more reliable?

According to our risk index, the 1.6 CDTI carries less risk than the 2.0 BlueHDi: 36/100 versus 45/100 (both moderate risk). The 1.6 CDTI has 1 documented serious fault, the main one being «Noise and early wear of the timing chain and its tensioner»; the 2.0 BlueHDi has 2 documented serious faults, the main one being «DPF clogging on short journeys».

Risk index

1.6 CDTI

Moderate risk · 1 serious fault

Lower risk

Risk index

2.0 BlueHDi

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 27 September 202616 sources How we work

Is the 1.6 CDTI reliable?

The Opel/Vauxhall 1.6 CDTI (2013-2020, 95-160 hp) has no design fault acknowledged by the manufacturer, but it has built up reports of early wear of the timing chain and its tensioner, two episodes (2016 and 2018) of German investigation into a possible EGR valve shut-off, and AdBlue system faults on its Euro 6 versions.^{[1][2][3][4][5][6][7]}

See the 3 of the 1.6 CDTI faults

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.^{[8][9][10][11]}

See the 4 of the 2.0 BlueHDi faults

Side-by-side comparison

Comparison of 1.6 CDTI and 2.0 BlueHDi
Item	1.6 CDTI	2.0 BlueHDi
Technical data
Type	Engine	Engine
Fuel	Diesel	Diesel
Displacement	1,598 cm³	1,997 cm³
Timing	Chain	Timing belt (dry)
Power	95–160 hp	150–180 hp
Production	2013–2020^[1][12]	2013–2021^[13][14][15]
Reliability
Risk index (what is it?)	36Moderate risk	45Moderate risk
Documented faults	3	4
Of high or critical severity	1	2
Worst severity	High severity	High severity
Main faults	High severity: Noise and early wear of the timing chain and its tensioner Medium severity: Suspected software shut-off of the EGR valve (emissions investigation) Medium severity: AdBlue (SCR) system failure on Euro 6 versions	Medium severity: AdBlue (SCR) tank and pump failure High severity: DPF clogging on short journeys High severity: Injector and high-pressure pump wear
Most expensive documented repair	up to €2,000AdBlue (SCR) system failure on Euro 6 versionsPublished figure^[7][16]	up to €1,500AdBlue (SCR) tank and pump failurePublished figure^[10][11]
Which versions to buy
BuyRecommended versions	None	None
With cautionVersions to be cautious about	1.6 CDTI 95 hp (B16DTE/B16DTU, 2014-2018)^[5][6] 1.6 CDTI 108-110 hp (B16DTL/B16DTN/B16DTU/D16DTI, 2014-2019)^[6] 1.6 CDTI 120-122 hp (B16DTJ/B16DTC, 2014-2018)^[2][3][4] 1.6 CDTI Turbo ecoFLEX 134-136 hp (B16DTH, 2013-2020)^[2][6] 1.6 BiTurbo CDTI ecoFLEX 150-160 hp (B16DTR/D16DTR, 2015-2019)^[5][12]	2.0 BlueHDi 150/163 (DW10FC/DW10FD, 2013-2020)^[8][10][11] 2.0 BlueHDi 177/180 (DW10FC/DW10FD, 2013-2021)^[8][9]
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

1.6 CDTI

See the 7 models with the 1.6 CDTI

2.0 BlueHDi

See the 13 models with the 2.0 BlueHDi

Other comparisons

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With the 2.0 BlueHDi

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Sources

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

GM Medium Diesel engineWikipedia (inglés) · Other source · consulted 27 September 2026
Opel, acusada de desconectar la válvula EGR de su modelo Zafira ¿aumentando las emisiones de NOx?Motorpasión · Motoring press · published 19 May 2016 · consulted 27 September 2026 · in Spanish
Opel está de nuevo en el punto de mira por las emisiones con 60.000 coches afectadosMotorpasión · Motoring press · published 16 July 2018 · consulted 27 September 2026 · in Spanish
La Fiscalía alemana registra las instalaciones de Opel en el marco de una investigación sobre emisionesMotorpasión · Motoring press · published 15 October 2018 · consulted 27 September 2026 · in Spanish
Fiabilité Opel Astra 5 (K) - avis et pannes des propriétairesFiches-auto.fr · Owners' forum · consulted 27 September 2026 · in French
Fiabilité Opel Mokka X - avis et pannes des propriétairesFiches-auto.fr · Owners' forum · consulted 27 September 2026 · in French
El aditivo de AdBlue que debes usar para evitar una reparación de 2.000 euros en tu coche diéselAutopista.es · Motoring press · published 1 April 2026 · consulted 27 September 2026 · in Spanish
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
Opel Astra KWikipedia (alemán) · Other source · consulted 27 September 2026 · in German
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
Twin dosing en diésel: el fallo que dispara una avería de más de 1.000 euros en el tallerMotor16 · Motoring press · published 22 September 2026 · consulted 27 September 2026 · in Spanish