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1.5 BlueHDi vs e-Skyactiv D 3.3: which engine is more reliable?

According to our risk index, the e-Skyactiv D 3.3 carries less risk than the 1.5 BlueHDi: 21/100 (low risk) versus 77/100 (very high risk). The 1.5 BlueHDi has 4 documented serious faults, the main one being «Wear and breakage of the 7 mm chain between the camshafts»; the e-Skyactiv D 3.3 has 2 documented serious faults, the main one being «Stalling and restart failures due to control unit software».

Risk index

1.5 BlueHDi

77

Very high risk · 4 serious faults

Risk index

e-Skyactiv D 3.3

21

Low risk · 2 serious faults

Lower risk

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

23 sourcesHow we work

Is the 1.5 BlueHDi reliable?

The 1.5 BlueHDi has a serious weak point in engines built from October 2017 to January 2023: the 7 mm chain linking the camshafts can stretch and break. Stellantis has recalled them and covers this fault for 10 years or 240,000 km; engines built up to August 2020 can also suffer AdBlue tank failures, with partial compensation from the manufacturer.[1][2][3][4]

See the 5 of the 1.5 BlueHDi faults

Is the e-Skyactiv D 3.3 reliable?

The e-Skyactiv D 3.3 is an inline-six diesel with mild-hybrid assistance that Mazda debuted in the CX-60. It is a very recent engine: there is no in-service reliability data, and what is documented are software recalls (stalling, restarting, clutch) fixed at the official dealer.[5][6][7]

See the 2 of the e-Skyactiv D 3.3 faults

Side-by-side comparison

Comparison of 1.5 BlueHDi and e-Skyactiv D 3.3
1.5 BlueHDie-Skyactiv D 3.3
Technical data
TypeEngineEngine
FuelDieselDiesel
Displacement1,499 cm³3,283 cm³
TimingTiming belt (dry)—
Power75–130 hp254 hp
Productionsince 2017[8][9][10][11][12][13]since 2022[14][15]
Reliability
Risk index (what is it?)77Very high risk21Low risk
Documented faults52
Of high or critical severity42
Worst severityCritical severityHigh severity
Main faults
  1. Critical severity: Wear and breakage of the 7 mm chain between the camshafts
  2. Medium severity: AdBlue tank and pump failure
  3. High severity: Seizure of the high-pressure pump and injection system
  1. High severity: Stalling and restart failures due to control unit software
  2. High severity: Clutch between engine and electric motor that does not re-engage after braking
Most expensive documented repairup to €1,500AdBlue tank and pump failurePublished figure[4][16][17][18]No reliable data
Which versions to buy
BuyRecommended versions
  • 1.5 BlueHDi with 8 mm chain (from February 2023)[2][19][20]
None
With cautionVersions to be cautious about
  • 1.5 BlueHDi 75-130 with 7 mm chain (October 2017 - January 2023)[21][22][23]
  • 3.3 e-Skyactiv D 254 (T3-VPTS, 2022-present)[5][6][7]
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

1.5 BlueHDi

See the 34 models with the 1.5 BlueHDi

e-Skyactiv D 3.3

Other comparisons

With the 1.5 BlueHDi

With the e-Skyactiv D 3.3

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.

  1. 1.5 BlueHDi. Stellantis rappelle 930 000 véhicules et étend la couverture à 10 ansL'argus · Motoring press · published 3 July 2025 · consulted 26 September 2026 · in French
  2. Llaman a revisión a miles de Citroën, Opel, Peugeot, DS y Fiat en España con el motor diésel 1.5 BlueHDiMotorpasión · Motoring press · published 3 July 2025 · consulted 26 September 2026 · in Spanish
  3. Réservoir AdBlue Stellantis. Quels changements dans l'indemnisation des clients français ?L'argus · Motoring press · published 21 December 2024 · consulted 26 September 2026 · in French
  4. OCU y BEUC consiguen que Stellantis amplíe la garantía de los depósitos AdBlue defectuososOCU · Consumer association · published 27 December 2024 · consulted 26 September 2026 · in Spanish
  5. DVSA – base de llamadas a revisión (Mazda CX-60)DVSA (Reino Unido) · Official body · consulted 29 October 2026
  6. Mazda CX-60 (2022 – 2024): engine stall (Safety Gate SR/01913/25)Car-Recalls.eu · Official body · published 23 May 2025 · consulted 29 October 2026
  7. Mazda CX-60: The engine not responding to the accelerator after stopping (KBA 14131R)Car-Recalls.eu · Official body · published 11 August 2025 · consulted 29 October 2026
  8. Ford DLD engineWikipedia · Other source · consulted 26 September 2026
  9. Motor DV5Oryx Parts · Technical documentation · published 24 January 2024 · consulted 26 September 2026 · in Spanish
  10. Which Cars Have a Wet Belt? Full UK Engine List (2026)CarOkay · Other source · published 2026 · consulted 26 September 2026
  11. Opel Corsa F: Probleme mit dem Ölbad-Zahnriemen erklärtcarVertical · Other source · published 17 July 2026 · consulted 26 September 2026 · in German
  12. PSA 1.5L BlueHDi: a focus on the DV5 engineSumax · Technical documentation · published July 2025 · consulted 26 September 2026
  13. Timing Belt Kit & Water Pump for Peugeot 1.5 BlueHDi - DV5RLymm Engine Parts · Technical documentation · consulted 26 September 2026
  14. Skyactiv (apartado Skyactiv-D 3.3)Wikipedia (inglés) · Other source · consulted 29 October 2026
  15. Mazda CX-60 3.3 e-Skyactiv D MHEV 254ps AWD HomuraPractical Caravan · Motoring press · consulted 29 October 2026
  16. La OCU quiere tomar medidas ante los problemas del sistema de AdBlue de Citroën y Peugeotcoches.com · Motoring press · published 30 May 2023 · consulted 26 September 2026 · in Spanish
  17. Solución fallo AdBlue Peugeot, Citroën y Opel: evita cambiar el depósitoST Automoción · Other source · published 11 December 2025 · consulted 26 September 2026 · in Spanish
  18. Stellantis amplía las compensaciones por los problemas técnicos de sus depósitos AdBlueMinisterio de Derechos Sociales, Consumo y Agenda 2030 · Official body · consulted 26 September 2026 · in Spanish
  19. 1.5 BlueHDi. Stellantis rappelle plusieurs milliers de véhicules pour un problème d'injectionL'argus · Motoring press · published 14 March 2026 · consulted 26 September 2026 · in French
  20. Europa amplía la llamada a revisión por los graves problemas del motor 1.5 BlueHDi de StellantisAutonoción · Motoring press · consulted 26 September 2026 · in Spanish
  21. Cobertura especial para los 1.5 BlueHDi del Grupo Stellantiscoches.net · Motoring press · published 3 July 2025 · consulted 26 September 2026 · in Spanish
  22. Casse chaîne 1.5 BlueHDi. Stellantis étend sa prise en charge à 7 ans ou 180 000 kmL'argus · Motoring press · published 15 January 2025 · consulted 26 September 2026 · in French
  23. Fiabilité moteur Stellantis 1.5 BlueHDi. Une nouvelle huile pour éviter la casseL'argus · Motoring press · published 14 January 2024 · consulted 26 September 2026 · in French