MAZDA ENGINE CODE • S5-DPTR
Mazda S5-DPTR Engine — Identification, Applications and Checks
This guide is for UK Mazda owners, workshops and buyers investigating an S5-DPTR 1.5 SkyActiv-D replacement-engine requirement. It explains how to verify the engine identity, what should be diagnosed before replacement and how to compare replacement routes. Because engine-code-to-model relationships can be specification-sensitive, the individual CX-3 must be verified before any fitment claim is relied upon.
✓ Used & reconditioned routes
✓ Supply only or fitted
✓ Vehicle-specific checks before commitment
ENGINE SIZE
2.2L
FUEL TYPE
Diesel
ENGINE CODE
S5-DPTR replacement engine options
Related engine size:Mazda 2.2L Engines →
What are the S5-DPTR engine specifications?
S5-DPTR is a 1.5-litre Mazda SkyActiv-D — inline-four, common-rail, turbocharged — recorded at 105 PS (77 kW) in CX-3 DK applications. Torque and equipment vary with later revisions and drivetrain, so confirm the details against your own car.
What are the main problems with the S5-DPTR engine?
No standalone fault pattern is published for S5-DPTR in reviewed records — fault evidence is pending verification — so don't let anyone sell you an engine on the strength of a supposed “known issue”. What matters is the individual car:
If a supplier claims a specific S5-DPTR fault, ask for the record behind it. The engine directory shows how this code sits in the wider range.
Diagnose properly: compression and leak-down, oil pressure, cooling and a full electronic scan before any replacement is discussed.
Diesel habits matter: short-trip use and interrupted DPF regenerations are the enemies of any modern diesel — check the car's usage history.
Look for maintenance evidence: oil-change history and DPF work tell you more than any rumour list.
Which S5-DPTR replacement route should you compare?
Compare tested used, reconditioned and supply-and-fit options on the evidence supplied with the engine and the complete written scope—not just headline price. The best route depends on condition evidence, included components, warranty, downtime, budget and whether installation is required.
01
Tested used
- Evidence to compare
- Identity, mileage, provenance, condition/testing, components, warranty
02
Reconditioned
- Evidence to compare
- Documented work, replaced parts, measurements/testing, components, warranty
03
Supply & fit
- Evidence to compare
- Verified engine, installation, fluids/filters, commissioning, timing, warranty
UK's Most Requested Engines — Based on 5,760+ Real Quotes (Last 90 Days)
These are the engines UK drivers ask us about most, ranked by real enquiry traffic through our network — useful context when you're weighing how much homework your engine deserves.
1
Most requested
Mazda 6 2.2 SkyActiv-D Engine SH-VPTR / SHY family
Used & reconditioned · Business seller
Get multiple engine quotes across the UK
Typical fitment: Mazda 6
Engine option: SH-VPTR / SHY family
Top UK demand — the diesel most often researched for replacement
Seller from trusted UK supplier network
2
Mazda CX-5 2.2 SkyActiv-D Engine SHY1 / SHY4 / SHY6
Used & reconditioned · Business seller
Get multiple engine quotes across the UK
Typical fitment: CX-5
Engine option: SHY1 / SHY4 / SHY6
High demand; output and code vary by year
Seller from trusted UK supplier network
3
Mazda 3 2.0 SkyActiv-G Engine PE-VPS
Used & reconditioned · Business seller
Get multiple engine quotes across the UK
Typical fitment: Mazda 3
Engine option: PE-VPS
Volume petrol with several applications
Seller from trusted UK supplier network
4
Mazda CX-3 1.5 SkyActiv-D Engine S5-DPTR
Used & reconditioned · Business seller
Get multiple engine quotes across the UK
Typical fitment: CX-3
Engine option: S5-DPTR
Steady CX-3 DK diesel demand
Seller from trusted UK supplier network
5
Mazda 2 1.5 SkyActiv-G Engine P5-VPS
Used & reconditioned · Business seller
Get multiple engine quotes across the UK
Typical fitment: Mazda 2
Engine option: P5-VPS
Small-car petrol volume
Seller from trusted UK supplier network
6
Mazda MX-5 1.5 / 2.0 SkyActiv-G Engine
Used & reconditioned · Business seller
Get multiple engine quotes across the UK
Typical fitment: MX-5
Enthusiast-driven demand
Seller from trusted UK supplier network
7
Mazda CX-60 3.3 e-Skyactiv D Engine T3Y4
Used & reconditioned · Business seller
Get multiple engine quotes across the UK
Typical fitment: CX-60
Engine option: T3Y4
Newest diesel; near-new donor market
Seller from trusted UK supplier network
8
Mazda CX-30 2.0 SkyActiv-G Engine PE-VPS / PEX family
Used & reconditioned · Business seller
Get multiple engine quotes across the UK
Typical fitment: CX-30
Engine option: PE-VPS / PEX family
Growing volume
Seller from trusted UK supplier network
9
Mazda BT-50 3.2 Duratorq diesel Engine P5-AT
Used & reconditioned · Business seller
Get multiple engine quotes across the UK
Typical fitment: BT-50
Engine option: P5-AT
Commercial workhorse demand
Seller from trusted UK supplier network
10
Mazda 2.5 SkyActiv-G Petrol Engine
Used & reconditioned · Business seller
Get multiple engine quotes across the UK
Typical fitment: CX-5, Mazda 6, CX-30, Mazda 3
Higher-capacity petrol
Seller from trusted UK supplier network
How should you verify an S5-DPTR engine for a Mazda CX-3?
Confirm the CX-3 registration, model year and specification, then physically verify the fitted engine identification. Only treat an S5-DPTR replacement as suitable when the supplier or workshop has matched the proposed unit against the individual vehicle rather than the model name or 1.5-litre capacity alone.
UK registration number.
CX-3 model year and derivative.
Physical S5-DPTR marking.
Engine size and fuel type.
Transmission and drivetrain.
Emissions and electronic specification.
Included components.
Diagnostic findings.
Reviewed Mazda engine guidance
Reviewed by the MazdaReplacementEngines.co.uk technical content team. Last updated: 21 September 2026.
Mazda official 2016 CX-3 technical specifications: https://newsroom.mazda.com/ja/publicity/release/2016/201610/161014a.pdf
The document lists the 1.5 SkyActiv-D CX-3 range and S5-DPTR/S5-DPTS codes. Use it as application evidence for that documented Japanese specification, not as universal UK interchangeability proof.
If an S5-DPTR engine code has been identified in connection with a Mazda CX-3 enquiry, verify that relationship against the individual vehicle before ordering a replacement. Start with the UK registration, inspect the physical engine identification and confirm the vehicle specification; then compare the proposed engine, condition evidence, included components, warranty and fitting scope. Do not treat this page title or an engine-code match alone as proof of compatibility.
Engine identification
What is the Mazda S5-DPTR engine?
Core identification question.
Answer
S5-DPTR is an engine-code identifier associated with Mazda's 1.5-litre SkyActiv-D diesel family/application. The code is useful for technical identification, but the exact vehicle application and replacement compatibility should be verified from the physical engine marking and individual vehicle data before purchase.
Additional detail
Use the UK registration to establish the vehicle details, then compare those details with the engine physically fitted. If the vehicle has had a previous engine change or the marking is unclear, obtain direct workshop/supplier verification rather than relying on registration-derived data alone.
Verify the engine before ordering
UK registration number
CX-3 model year and derivative
Physical engine-code marking
Engine size and fuel type
Transmission and drivetrain
Relevant emissions/electronic specification
Included engine components
Existing diagnostic findings
How should you verify an S5-DPTR engine for a Mazda CX-3?
Confirm the CX-3 registration, model year and specification, then physically verify the fitted engine identification. Only treat an S5-DPTR replacement as suitable when the supplier or workshop has matched the proposed unit against the individual vehicle rather than the model name or 1.5-litre capacity alone.
Diagnosis before replacement
What should be diagnosed before replacing a 1.5 SkyActiv-D engine?
Problem-solving heading.
Answer
A diesel warning light, loss of power, smoke, noise or emissions-system fault does not automatically prove that the complete engine needs replacement. Diagnosis should separate internal mechanical damage from faults involving lubrication, cooling, turbocharging, fuel delivery, EGR/DPF systems, sensors or ancillaries before an engine is condemned.
Checks
Useful evidence may include a diagnostic scan and stored fault codes, compression or leak-down testing where appropriate, lubrication/oil-pressure findings, cooling-system checks and inspection of relevant diesel emissions, intake and turbo systems.
When replacement makes sense
When should an S5-DPTR replacement engine be considered?
Decision question.
Answer
Replacement becomes a practical route when diagnosis supports major internal damage or when a documented repair is no longer commercially sensible. Compare repair scope and expected outcome with the proposed replacement engine's identity, evidence, warranty, total cost and fitting requirements.
Compare replacement routes
Which S5-DPTR replacement route should you compare?
Compare tested used, reconditioned and supply-and-fit options on the evidence supplied with the engine and the complete written scope—not just headline price. The best route depends on condition evidence, included components, warranty, downtime, budget and whether installation is required.
Tested used
For a tested used unit, compare the physical engine identity, disclosed mileage, donor/provenance records, condition or testing evidence, included components and supplier warranty.
Reconditioned
For a reconditioned unit, ask what was inspected, measured, repaired or replaced and review the documented test results and supplier warranty.
Supply & fit
For supply & fit, the written quote should identify the engine and installation scope. Depending on the job, this may include removal, installation, fluids and filters, ancillary transfer, relevant coding/adaptation, diagnostic scanning, commissioning, road testing and final checks.
Compatibility and fitment checks
Does an S5-DPTR code guarantee CX-3 compatibility?
Critical question.
Answer
No. An engine-code match is an important technical check, but this page should not be used as a universal fitment guarantee. Verify the S5-DPTR-to-CX-3 relationship and the individual vehicle configuration before ordering or publishing definitive compatibility claims.
Additional detail
Production period, transmission, drivetrain, emissions equipment, electronics, ancillaries and included components can affect a replacement requirement. Until authoritative technical evidence confirms the exact model/code relationship, keep compatibility language conditional.
What to compare in a quote
What should an S5-DPTR replacement-engine quote include?
Answer
The quote should clearly identify the proposed engine and state its condition, used-engine mileage where applicable, price, warranty, delivery, fitting if requested, expected timing and supplier details. Compare offers only after the engine requirement has been verified against the vehicle.
Additional detail
Relevant suppliers can send competing quotes by email and SMS/WhatsApp after an enquiry. Availability is confirmed by suppliers after the enquiry rather than displayed as real-time website stock.
Mazda S5-DPTR engine FAQs
What size is the S5-DPTR engine?
S5-DPTR is associated with a 1.5-litre SkyActiv-D diesel engine family/application. Verify the physical engine identification and individual vehicle before ordering a replacement.
Is S5-DPTR a petrol or diesel engine?
It is associated with Mazda's SkyActiv-D diesel family, not SkyActiv-G petrol. Physically confirm the code if the fitted engine's identity is uncertain.
Does S5-DPTR definitely fit every Mazda CX-3 1.5 diesel?
No universal fitment should be assumed. Verify the exact model/code relationship, production specification and individual vehicle before a supplier unit is accepted as compatible.
Can I identify the engine using my registration?
The UK registration is the best vehicle-level starting point, but replacement matching should also use the physical engine code and relevant vehicle specification. This is especially important where an engine may previously have been changed.
Can I buy a tested used S5-DPTR engine?
Relevant suppliers can quote tested used units where available. Compare engine identity, disclosed mileage, provenance, testing or condition evidence, included components and warranty before accepting an offer.
Can I get a reconditioned S5-DPTR engine?
Reconditioned options can be quoted where available. Ask for documentation of the work completed, parts replaced, inspections or measurements, testing results and supplier warranty.
Can an S5-DPTR engine be supplied and fitted?
Supply & fit can be requested. The supplier's written quote should explain the proposed engine, installation scope, timing and relevant warranty terms.
How much does an S5-DPTR replacement engine cost?
There is no reliable single fixed price because the quote depends on the exact unit, condition, mileage where applicable, availability, included components, delivery and fitting requirement. Compare written like-for-like quotes.
Should a DPF or EGR problem mean the engine needs replacing?
Not automatically. Diesel emissions-system faults can cause serious symptoms without proving that the complete engine has failed, so obtain diagnostic evidence before deciding on replacement.
Is the engine code alone enough to order a replacement?
No. Use the code together with the registration, physical engine identification and full vehicle specification. The supplier should confirm the proposed engine against the individual vehicle.
READY FOR THE NEXT STEP?
Get Engine Quotes →Get a verified S5-DPTR replacement-engine quote
Share the UK registration, physical engine identification, vehicle details, diagnostic information and whether you need engine only or supply & fit. Ask the supplier to verify the proposed engine against the individual vehicle before you compare price, evidence, warranty, delivery and fitting scope.
Reviewed Mazda engine guidance
Reviewed by the MazdaReplacementEngines.co.uk technical content team. Last updated: 15 September 2026.
Before this page is made indexable, verify the S5-DPTR ↔ Mazda CX-3 application from authoritative technical evidence and record the source in the project's technical evidence sheet.