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S5-DPTSS5-DPTR

1.5 Skyactiv-D 105 (S5-DPTS, 2015-2018) engine: faults and reliability

Mazda Skyactiv-D 1.5/1.8/2.2 (S5-DPTS, S8-DPTS, SH-VPTS) version

With caution

It has fewer published reports than the 2.2, but those available on fiches-auto.fr describe the same oil dilution pattern and the odd injector and even turbo case. Check the maintenance history before buying.[1][2]

Years
2015–2018
Power
105 hp
Faults that affect it
3
2 of high or critical severity
Cars that use it
2
in our database

5 sourcesHow we work

What changes in this version

The single-turbo 1.5 Skyactiv-D arrived as a more affordable, lighter option for the Mazda3 and the CX-3, with 105 hp. It shares the same low-compression principle as the 2.2 and, according to fiches-auto.fr, the same sensitivity to oil dilution with diesel during particulate filter regenerations.[3][4]

Engine codes of this version: S5-DPTS, S5-DPTR.

Faults of the S5-DPTS engine

The documented engine faults that affect this version and its years, from most to least important.

  1. 1High severityFrequency: CommonLubricationOil dilution with diesel during DPF regenerationsOn the Skyactiv-D (1.5, 1.8 and 2.2), particulate filter regenerations can let diesel into the sump and raise the oil level. Mazda accepts some dilution as normal, but on short urban journeys the expected margin can be exceeded and harm the lubrication of the turbo and the camshaft.
  2. 2High severityFrequency: CommonTurboTurbo wear or failure from lack of lubricationThe two-stage sequential turbo of the 2.2 Skyactiv-D appears as one of the most cited faults by CX-5, Mazda6 and Mazda3 owners, especially when the oil has lost lubricating ability through dilution or when the camshaft on 2013-2014 units sheds metal particles.
  3. 3Medium severityFrequency: CommonIntakeCarbon build-up in the intake, EGR and injectorsUrban use and short journeys encourage carbon build-up in the intake manifold, EGR valve and injectors of the Skyactiv-D, with loss of power and uneven running; it is documented on the CX-5, the Mazda6, the Mazda3, the CX-3 and the CX-30.

Cars fitted with the S5-DPTS engine

Open each car to see all its faults with this engine and what to check before buying it.

Mazda

Frequently asked questions

Is the S5-DPTS engine reliable?

Our verdict is “With caution”. It has fewer published reports than the 2.2, but those available on fiches-auto.fr describe the same oil dilution pattern and the odd injector and even turbo case. Check the maintenance history before buying.[1][2]

What faults does the S5-DPTS engine have?

The documented ones that affect this version, by importance: oil dilution with diesel during DPF regenerations (high severity), turbo wear or failure from lack of lubrication (high severity) and carbon build-up in the intake, EGR and injectors (medium severity).

Which cars use the S5-DPTS engine?

Mazda 3 III (2013–2019) and Mazda CX-3 (2016–2021).[1][2][4][5]

Are you buying a car with the S5-DPTS engine?

We will put you in touch with a partner only if you authorise it in the form.

Do you have a car with this engine? Tell us which faults you have had and at how many kilometres. Report your fault.

Sources

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

  1. Fiabilité Mazda CX-3Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
  2. Fiabilité Mazda 3 (2013-2019)Fiches-auto.fr · Motoring press · consulted 27 September 2026 · in French
  3. SkyActivWikipedia (inglés) · Other source · consulted 27 September 2026
  4. Mazda CX-3Wikipedia (inglés) · Other source · consulted 27 September 2026
  5. Mazda3Wikipedia (inglés) · Other source · consulted 27 September 2026