Skip to content
MotorFiable
en

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

According to our risk index, the 1.7 CDTI carries less risk than the 2.0 BlueHDi: 36/100 versus 45/100 (both moderate risk). The 1.7 CDTI has 3 documented serious faults, the main one being «Dual-mass flywheel and clutch wear»; the 2.0 BlueHDi has 2 documented serious faults, the main one being «DPF clogging on short journeys».

Risk index

1.7 CDTI

36

Moderate risk · 3 serious faults

Lower risk

Risk index

2.0 BlueHDi

45

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

16 sourcesHow we work

Is the 1.7 CDTI reliable?

The 1.7 CDTI (Isuzu, 2003-2015) is a simple, widely used diesel, but it has built up accounts of soot-fouled EGR valves and injectors, a clogged diesel particulate filter (DPF) with oil dilution, wear of the dual-mass flywheel and clutch, and of the Hitachi-brand alternator; it also requires the timing belt to be changed every 150,000 km or 6 years to avoid a serious failure.[1][2][3][4][5][6][7]

See the 5 of the 1.7 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 1.7 CDTI and 2.0 BlueHDi
1.7 CDTI2.0 BlueHDi
Technical data
TypeEngineEngine
FuelDieselDiesel
Displacement1,686 cm³1,997 cm³
TimingTiming belt (dry)Timing belt (dry)
Power100–130 hp150–180 hp
Production2003–2015[1][12][13]2013–2021[14][15][16]
Reliability
Risk index (what is it?)36Moderate risk45Moderate risk
Documented faults54
Of high or critical severity32
Worst severityCritical severityHigh severity
Main faults
  1. High severity: Dual-mass flywheel and clutch wear
  2. High severity: Clogged diesel particulate filter (DPF) and oil dilution
  3. Critical severity: Timing belt: risk of serious failure if not changed on time
  1. Medium severity: AdBlue (SCR) tank and pump failure
  2. High severity: DPF clogging on short journeys
  3. High severity: Injector and high-pressure pump wear
Most expensive documented repairNo reliable dataup to €1,500AdBlue (SCR) tank and pump failurePublished figure[10][11]
Which versions to buy
BuyRecommended versionsNoneNone
With cautionVersions to be cautious about
  • 1.7 CDTI 100-101 hp (Z17DTH, 2003-2007)[6][7]
  • 1.7 CDTI 110 hp (Z17DTJ/A17DTJ/A17DTC/A17DTE, 2007-2014)[6][7]
  • 1.7 CDTI 125 hp (Z17DTR/A17DTR, 2006-2013)[2][3]
  • 1.7 CDTI 130 hp (A17DTS, 2010-2015)[6][7]
  • 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 avoidNoneNone

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

Cars that each one is fitted to

1.7 CDTI

See the 7 models with the 1.7 CDTI

2.0 BlueHDi

See the 13 models with the 2.0 BlueHDi

Other comparisons

With the 1.7 CDTI

With the 2.0 BlueHDi

Compare other engines

That is the comparison you are viewing: change one of the two engines.

Sources

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

  1. Circle L engineWikipedia (inglés) · Other source · consulted 27 September 2026
  2. Essai complet Opel Astra (H) : fiabilité et avisFiches-auto.fr · Owners' forum · consulted 27 September 2026 · in French
  3. Essai complet Opel Zafira 2 : fiabilité et avisFiches-auto.fr · Owners' forum · consulted 27 September 2026 · in French
  4. Essai complet Opel Meriva : fiabilité et avisFiches-auto.fr · Owners' forum · consulted 27 September 2026 · in French
  5. Opel Astra H (A04): Probleme & KaufberatungGebrauchtwagenberater.de · Other source · consulted 27 September 2026 · in German
  6. Opel Meriva A: ProblemeGebrauchtwagenberater.de · Other source · consulted 27 September 2026 · in German
  7. Opel Meriva B: ProblemeGebrauchtwagenberater.de · Other source · consulted 27 September 2026 · in German
  8. Fiabilité du 2.0 HDIFiches-Auto · Motoring press · consulted 27 September 2026 · in French
  9. Fiabilité Opel Grandland X (2017-2024), pannes et témoignagesFiches-Auto · Motoring press · consulted 27 September 2026 · in French
  10. AdBlue : problèmes en pagailleFiches-Auto · Motoring press · consulted 27 September 2026 · in French
  11. 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
  12. Opel Corsa DWikipedia (alemán) · Other source · consulted 27 September 2026 · in German
  13. Opel MerivaWikipedia (alemán) · Other source · consulted 27 September 2026 · in German
  14. PSA EW/DW engineWikipedia (inglés) · Other source · consulted 27 September 2026
  15. Peugeot 308Wikipedia (inglés) · Other source · consulted 27 September 2026
  16. 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