This page is for UK Mazda CX-60 owners, garages and engine buyers researching a Mazda CX-60 T3Y4 engine. Start with the registration and full vehicle specification and confirm the physical T3Y4 identification where accessible; then compare the proposed replacement by condition, provenance or reconditioning evidence, included components, warranty, delivery and fitting scope. Model name, capacity or engine-code similarity on its own must never be treated as a universal compatibility guarantee.
MAZDA ENGINE CODE • T3Y4
Mazda T3Y4 Engine (3.3 e-Skyactiv D, CX-60) — Identification, Problems and Replacement
The T3Y4 engine is Mazda's 3.3-litre e-Skyactiv D — a mild-hybrid diesel inline-six recorded at 254 PS and 550 Nm in the CX-60 254 AWD (2022) application. It's one of the newest diesels on UK roads, which changes how you buy one: donors are recent, and the electronics need checking as carefully as the mechanicals. For CX-60 owners comparing replacement options.
✓ Used & reconditioned routes
✓ Supply only or fitted
✓ Vehicle-specific checks before commitment
ENGINE SIZE
3.3L
FUEL TYPE
Diesel
ENGINE CODE
T3Y4 replacement engine options
Related engine size:Mazda 3.3L Engines →
Audience & decision context
Use this guide when a Mazda CX-60 has a suspected engine failure, when a workshop is confirming the correct replacement requirement, or when a buyer is comparing engine-only and supply-and-fit quotations. The decision is not simply which quote is cheapest: first establish that every supplier is quoting against the same verified vehicle and engine requirement, then compare the evidence and complete written scope.
Definition / entity clarity
Definition: a Mazda CX-60 T3Y4 engine page is a vehicle-and-engine identification and replacement decision page, not proof that every unit carrying a similar description will fit every Mazda CX-60. Compatibility depends on the individual vehicle specification and the replacement unit being correctly identified; unresolved differences in production period, transmission, drivetrain, emissions equipment, electronics or included components must be checked before purchase.
Original operational experience
In the MazdaReplacementEngines.co.uk quotation workflow, the UK registration is used to establish vehicle-level details before the proposed engine is checked against the individual requirement and confirm the physical T3Y4 identification where accessible. Suppliers confirm current availability after the enquiry rather than the site presenting stock as live. For a used engine, the buyer should receive the disclosed mileage and available donor, supplier or mileage-record evidence; for a reconditioned unit, ask what work was completed and what testing evidence supports it. A supply-and-fit quotation should make the removal, installation, fluids/filters, ancillary transfer, relevant coding or adaptation, diagnostics, commissioning, road test and handover scope clear where applicable.
What are the T3Y4 engine specifications?
T3Y4 is a 3.3-litre (3,283 cc) Mazda e-Skyactiv D — a longitudinal inline-six diesel with mild-hybrid technology — recorded at 254 PS and 550 Nm in the CX-60 254 AWD application. Note the turbo detail: it's one turbocharger in a twin-scroll arrangement, not a twin-turbo setup — a mix-up that costs money when parts are ordered.
Which Mazda models and years use the T3Y4 engine?
The verified application is the CX-60 254 AWD from 2022. Other CX-60 versions and every other model — including the CX-80 — need their own model-, year- and configuration-specific evidence before any fitment claim. Treat the code plus your Reg as the deciding pair, never the badge alone.
The CX-60 model hub covers the vehicle, and the 3.3L engine size guide places the e-Skyactiv D in context.
| Model | Generation / body | Engine | Output | Evidence status |
|---|---|---|---|---|
| Mazda CX-60 | 254 AWD (2022 cited) | 3.3 e-Skyactiv D | 254 PS / 550 Nm | Reviewed application record |
| Mazda CX-60 | Other versions | 3.3 e-Skyactiv D | — | Not established — verify per vehicle |
| Mazda CX-80 / other models | — | — | — | No fitment established — do not assume |
What are the main problems with the T3Y4 engine?
This is a young engine, and the honest position is that verified fault evidence is thinner than for the older 2.2 family. What records flag so far: DPF and regeneration behaviour, and AdBlue / NOx system attention on the diesel side — the usual modern-diesel themes.
If a used T3Y4 is offered, ask for the hybrid-system health records as well as the engine's. The engine directory shows where this code sits in the range.
DPF / regeneration: short-journey use punishes any modern diesel — check usage and regeneration history rather than assuming.
AdBlue / NOx systems: sensors and dosing faults can trigger warnings; diagnose before condemning the engine.
Mild-hybrid electronics: the starter-generator, battery system and calibration must be checked alongside the mechanicals — on a new engine, that's where the risk sits.
Diagnose first: a full electronic scan and mechanical checks before anyone talks about replacement.
Decision comparison table
| Compare | Tested used engine | Reconditioned engine | Supply & fit |
|---|---|---|---|
| Identity | Must match verified vehicle requirement | Must match verified vehicle requirement | Engine and vehicle requirement checked before installation |
| Evidence | Mileage/provenance plus available test/condition records | Reconditioning process, replaced/repaired parts and test results | Engine evidence plus written workshop/job scope |
| Best comparison basis | Condition, mileage, evidence, warranty, total delivered scope | Work completed, evidence, warranty, included components | Complete installed scope, responsibilities, timing and warranty |
| Do not decide on | Price alone | The word “reconditioned” alone | Headline fitted price alone |
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
Evidence checklist
Before accepting a quote, check the evidence and written scope below.
Registration, model/year and derivative are correct.
Engine size/type, fuel type and physical engine identification are reconciled.
Used mileage or reconditioning work is stated where applicable.
Provenance, inspection, testing, photographs, video or supporting records are available where supplied.
Included and excluded components are written down.
Warranty and supplier-specific return/cancellation terms are clear.
Delivery, recovery and fitting responsibilities are defined.
Price and expected timing refer to the same verified requirement.
T3Y4 engine questions
Does the T3Y4 also fit the CX-80?
No fitment is established for the CX-80 on current evidence — the verified application is the CX-60 254 AWD from 2022. Any other model needs its own verification before you consider it.
Is the 3.3 e-Skyactiv D a twin-turbo engine?
No. It uses one turbocharger in a twin-scroll arrangement — a common and expensive mix-up when manifolds or replacement units are compared. Check the parts, not the rumour.
Why do power figures vary between listings?
Output is variant-dependent. The cited 254 PS and 550 Nm belong to the CX-60 254 AWD application; match any figure to the actual vehicle paperwork.
What's different about buying a mild-hybrid diesel?
The hybrid hardware, battery electronics and calibration must be compatible with your car — so the written component schedule and OEM references matter even more than on an older diesel.
How do I know whether a Mazda CX-60 T3Y4 engine is right for my vehicle?
Start with the UK registration and full vehicle specification, then verify the fitted engine identification where accessible. Ask the supplier to resolve any mismatch before you accept the quote; a matching model name, nominal capacity or code family is not enough by itself.
Should I choose a used or reconditioned engine for my Mazda CX-60?
Neither label is automatically the better choice for every vehicle. Compare the exact match, condition evidence, used mileage where relevant, documented reconditioning work, included components, warranty, delivery/fitting scope and total written price before deciding.
Does a fault on my Mazda CX-60 mean the complete engine must be replaced?
No. Warning lights, smoke, noise, overheating, oil/coolant symptoms or loss of power can have more than one cause, so appropriate diagnostic and mechanical checks should separate internal engine damage from cooling, lubrication, fuelling, ignition, emissions, sensor, electrical or ancillary faults before replacement is authorised.
identify the individual Mazda CX-60 first, verify the proposed replacement second, and compare like-for-like written quotations only after those two steps are complete. Prefer the quote that gives you enough evidence to understand exactly what engine is being supplied, its stated condition, what is included, who is responsible for warranty/fulfilment, and what delivery or fitting work is covered.
READY FOR THE NEXT STEP?
Check My Registration →Get T3Y4 replacement quotes for your Mazda CX-60
Ready to compare? Start with your registration — it pins down the CX-60's exact specification, and quotations come back with used, reconditioned and supply-and-fit options including the hybrid-component detail. For official specifications and service documentation, cross-check against official documentation — source: Mazda UK's official resources. New to the process? How the quotation process works explains each step from registration to handover.
Reviewed Mazda engine guidance
Reviewed by the MazdaReplacementEngines.co.uk technical content team. Last updated: 21 September 2026.
If you are checking a T3Y4 engine for a Mazda CX-60, confirm the UK registration, physical engine identification and exact vehicle specification before ordering a replacement. The page is for UK CX-60 owners and workshops investigating engine faults or comparing tested used, reconditioned and supply-and-fit routes. Treat the engine code, 3.3-litre diesel description and vehicle configuration as matching evidence that must agree rather than assuming compatibility from one detail alone.
Questions about this engine
What is the Mazda T3Y4 engine and why does the exact CX-60 specification matter?
T3Y4 is the engine-code reference used on this page for the CX-60 3.3 e-SKYACTIV D application. For replacement purposes, the practical question is not only 'what is T3Y4?' but whether the proposed unit matches the individual vehicle's production specification, drivetrain, emissions/electronic configuration and relevant electrified-system requirements.
How do I check whether a T3Y4 replacement engine matches my CX-60?
Start with the UK registration, then verify the physical engine identification and the exact derivative. Before accepting a quote, confirm transmission/drivetrain, production specification, emissions and electronic requirements, included components and any coding or adaptation needed during installation.
Should I replace the T3Y4 engine or diagnose the fault first?
Diagnose the fault first unless complete engine failure has already been established. Warning lights, poor running, smoke, loss of power or starting problems can have causes outside the core engine, so diagnostic scanning and appropriate mechanical checks should support the replacement decision.
Reviewed Mazda engine guidance
Reviewed by the MazdaReplacementEngines.co.uk technical content team. Last updated: 16 September 2026.
Questions about this engine
Key Takeaway
Key takeaway: A T3Y4 replacement should be selected only after the Mazda CX-60 registration, physical engine identification and relevant 3.3 e-Skyactiv D specification have been checked together. Do not accept a unit solely because it is advertised as a CX-60 3.3 diesel engine.
What is the Mazda T3Y4 engine?
The T3Y4 is an engine-identification reference associated with the Mazda CX-60 3.3-litre e-Skyactiv D diesel application covered by this page. For replacement sourcing, the code is a useful identifier but should be verified against the individual vehicle before purchase.
How do I verify a T3Y4 replacement before buying?
Start with the UK registration, then verify the physical engine code/identification and the vehicle specification. Ask the supplier to confirm the exact proposed engine, condition, mileage where used, warranty, delivery, included components and fitting scope in writing.
Practical matching guidance
Practical matching example
Example: a request for a 'CX-60 3.3 diesel engine' is not a complete matching record. The registration and physical engine identity should first narrow the requirement; the supplier's proposed T3Y4 unit and specification can then be checked before the customer compares price and terms.
Verification data
Record the registration, production/model details, physical engine identity, 3.3 e-Skyactiv D specification, relevant transmission/electronic details, quoted condition, used mileage where applicable, warranty and supplier's exact engine description. Use cited figures only when supported by a credible source.
Scope
Audit rule
PASS checks remain unchanged. The listed FIX items are addressed below, including indexability implementation guidance.