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e-Skyactiv D 3.3 vs 2.5 dCi YD25: which engine is more reliable?

According to our risk index, the e-Skyactiv D 3.3 carries less risk than the 2.5 dCi YD25: 21/100 (low risk) versus 59/100 (high risk). The e-Skyactiv D 3.3 has 2 documented serious faults, the main one being «Stalling and restart failures due to control unit software»; the 2.5 dCi YD25 has 3 documented serious faults, the main one being «Timing chain wear and failure».

Risk index

e-Skyactiv D 3.3

21

Low risk · 2 serious faults

Lower risk

Risk index

2.5 dCi YD25

59

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

10 sourcesHow we work

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.[1][2][3]

See the 2 of the e-Skyactiv D 3.3 faults

Is the 2.5 dCi YD25 reliable?

The 2.5 dCi YD25 in the Navara D40 and Pathfinder R51 is tough, but it has one documented weak point: the lower timing chain, whose failure can destroy the engine. Check its condition, as well as the EGR and the turbo.[4][5][6]

See the 4 of the 2.5 dCi YD25 faults

Side-by-side comparison

Comparison of e-Skyactiv D 3.3 and 2.5 dCi YD25
e-Skyactiv D 3.32.5 dCi YD25
Technical data
TypeEngineEngine
FuelDieselDiesel
Displacement3,283 cm³2,488 cm³
Timing—Chain
Power254 hp144–190 hp
Productionsince 2022[7][8]2005–2015[4][9][10]
Reliability
Risk index (what is it?)21Low risk59High risk
Documented faults24
Of high or critical severity23
Worst severityHigh severityCritical severity
Main faults
  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
  1. Critical severity: Timing chain wear and failure
  2. High severity: Turbocharger failure
  3. Medium severity: EGR valve clogged with carbon
Most expensive documented repairNo reliable dataNo reliable data
Which versions to buy
BuyRecommended versionsNoneNone
With cautionVersions to be cautious about
  • 3.3 e-Skyactiv D 254 (T3-VPTS, 2022-present)[1][2][3]
  • 2.5 dCi 144 and 174 hp (YD25DDTi, 2005-2010)[4][5]
  • 2.5 dCi 190 hp (YD25DDTi, 2010-2015)[4][5]
  • 2.5 YD25DDTi 133 hp (Navara D22 / NP300, from 2001)[4][5]
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

e-Skyactiv D 3.3

2.5 dCi YD25

Other comparisons

With the e-Skyactiv D 3.3

With the 2.5 dCi YD25

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. DVSA – base de llamadas a revisión (Mazda CX-60)DVSA (Reino Unido) · Official body · consulted 29 October 2026
  2. 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
  3. 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
  4. Tips for buying a second-hand pickup: Nissan NavaraFarmers Weekly Interactive · Motoring press · consulted 5 October 2026
  5. YD25 Engine Guide: Specs, Reliability, Problems & Buying TipsAutopartswd · Technical documentation · consulted 5 October 2026
  6. Nissan Navara ProblemeCarwiki.de · Other source · consulted 5 October 2026 · in German
  7. Skyactiv (apartado Skyactiv-D 3.3)Wikipedia (inglés) · Other source · consulted 29 October 2026
  8. Mazda CX-60 3.3 e-Skyactiv D MHEV 254ps AWD HomuraPractical Caravan · Motoring press · consulted 29 October 2026
  9. Nissan YD engineWikipedia · Other source · consulted 5 October 2026
  10. Nissan NavaraWikipedia · Other source · consulted 5 October 2026