e-Skyactiv D 3.3 vs 1.9 D (XUD and DW8): which engine is more reliable?

According to our risk index, the e-Skyactiv D 3.3 carries less risk than the 1.9 D (XUD and DW8): 21/100 (low risk) versus 32/100 (moderate 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 1.9 D (XUD and DW8) has 2 documented serious faults, the main one being «Damaged cylinder head gasket and cylinder head on the 1.9 D and TD».

Risk index

e-Skyactiv D 3.3

Low risk · 2 serious faults

Lower risk

Risk index

1.9 D (XUD and DW8)

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 2 November 202616 sources How 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 1.9 D (XUD and DW8) reliable?

Simple, long-lived indirect-injection diesels with uncommon faults. The points to watch are the cylinder head gasket, the connecting rod on the 1996-1999 1.9 TD (rare but destructive), the accessory belt on cars built up to mid-1999, and oil or injection pump leaks at high mileage.^[4][5][6][7]

See the 4 of the 1.9 D (XUD and DW8) faults

Side-by-side comparison

Comparison of e-Skyactiv D 3.3 and 1.9 D (XUD and DW8)
Item	e-Skyactiv D 3.3	1.9 D (XUD and DW8)
Technical data
Type	Engine	Engine
Fuel	Diesel	Diesel
Displacement	3,283 cm³	—
Timing	—	Timing belt (dry)
Power	254 hp	58–92 hp
Production	since 2022^[8][9]	1982–2007^{[10][11][12][13]}
Reliability
Risk index (what is it?)	21Low risk	32Moderate risk
Documented faults	2	4
Of high or critical severity	2	2
Worst severity	High severity	Critical severity
Main faults	High severity: Stalling and restart failures due to control unit software High severity: Clutch between engine and electric motor that does not re-engage after braking	High severity: Damaged cylinder head gasket and cylinder head on the 1.9 D and TD Critical severity: Connecting rod failure without warning in the 1.9 TD (XUD9 TE) Medium severity: Accessory belt failure in the 1998-1999 diesels
Most expensive documented repair	No reliable data	No reliable data
Which versions to buy
BuyRecommended versions	None	None
With cautionVersions to be cautious about	3.3 e-Skyactiv D 254 (T3-VPTS, 2022-present)^[1][2][3]	1.8 D 58-60 hp (XUD7, until 2000)^[10][14] 1.9 D 68-71 hp (XUD9 A: D9B and DJY, 1994-2000)^{[4][5][7][15]} 1.9 SD 75 hp and 1.9 TD 90-92 hp (XUD9 SD and XUD9 TE, 1994-2000)^[4][5][6] 1.9 D 69-72 hp (DW8: WJY, WJZ and DW8B, 1999-2005)^[15][16]
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

e-Skyactiv D 3.3

Mazda CX-60

1.9 D (XUD and DW8)

See the 16 models with the 1.9 D (XUD and DW8)

Other comparisons

With the e-Skyactiv D 3.3

With the 1.9 D (XUD and DW8)

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.

DVSA – base de llamadas a revisión (Mazda CX-60)DVSA (Reino Unido) · Official body · consulted 29 October 2026
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
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
Peugeot 306: fiche fiabilitéCaradisiac · Motoring press · consulted 2 November 2026 · in French
Citroën Xsara: fiche fiabilitéCaradisiac · Motoring press · consulted 2 November 2026 · in French
Peugeot 406: fiche fiabilitéCaradisiac · Motoring press · consulted 2 November 2026 · in French
Fiabilité Peugeot 306: pannes et avis des propriétairesFiches-auto.fr · Owners' forum · consulted 2 November 2026 · in French
Skyactiv (apartado Skyactiv-D 3.3)Wikipedia (inglés) · Other source · consulted 29 October 2026
Mazda CX-60 3.3 e-Skyactiv D MHEV 254ps AWD HomuraPractical Caravan · Motoring press · consulted 29 October 2026
PSA XUD engineWikipedia (en) · Other source · consulted 2 November 2026
PSA EW/DW engineWikipedia (en) · Other source · consulted 2 November 2026
PSA-XUD-MotorWikipedia (de) · Other source · consulted 2 November 2026 · in German
Citroën XsaraWikipedia (es) · Other source · consulted 2 November 2026 · in Spanish
Fiabilité Peugeot Partner: pannes et avis des propriétairesFiches-auto.fr · Owners' forum · consulted 2 November 2026 · in French
Fiabilité Citroën Berlingo: pannes et avis des propriétairesFiches-auto.fr · Owners' forum · consulted 2 November 2026 · in French
Citroën Berlingo: l'alternative ! (page Fiabilité)Caradisiac · Motoring press · consulted 2 November 2026 · in French