Short answer / Key takeaway: This guide is for UK Mazda CX-5 owners, workshop mechanics and engine buyers investigating a P5Y7 reference, engine specifications, faults or replacement options. Mazda documents a 2.5-litre SkyActiv-G petrol specification with 2,488 cc displacement, but the reviewed source does not prove P5Y7 is its engine code, so confirm the registration, physical engine identity and full vehicle specification before ordering. Then compare tested used, reconditioned or supply-and-fit quotes by evidence, components, warranty and fitting scope.
MAZDA ENGINE CODE • P5Y7
Mazda P5Y7 Engine (2.5L SkyActiv-G): Specs, Common Faults & Replacement
Use this page when P5Y7 has been supplied as part of a Mazda engine enquiry and you need to establish whether it belongs to the individual vehicle. It is designed for UK motorists, workshops and replacement-engine buyers making a compatibility, repair-versus-replacement or supplier-quote decision.
✓ Used & reconditioned routes
✓ Supply only or fitted
✓ Vehicle-specific checks before commitment
ENGINE SIZE
2.5L
FUEL TYPE
Petrol
ENGINE CODE
P5Y7 replacement engine options
Related engine size:Mazda 2.5L Engines →
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
What can an official Mazda source confirm about the 2.5 SkyActiv-G?
Mazda's CX-5 owner's-manual specification confirms a naturally aspirated SkyActiv-G 2.5 petrol engine with 2,488 cc displacement in the referenced CX-5 specification. That is useful evidence for the 2.5 SkyActiv-G engine itself, but it should not be used as proof that P5Y7 is the engine code unless a separate authoritative application record establishes that mapping.
What can an official Mazda source confirm about the 2.5 SkyActiv-G?
Mazda's CX-5 owner's-manual specification confirms a naturally aspirated SkyActiv-G 2.5 petrol engine with 2,488 cc displacement in the referenced CX-5 specification. That is useful evidence for the 2.5 SkyActiv-G engine itself, but it should not be used as proof that P5Y7 is the engine code unless a separate authoritative application record establishes that mapping.
External source
Mazda CX-5 official owner's manual — specifications: https://owners-manual.mazda.com/gen/en/cx-5/cx-5_8ft1ee17b/contents/10020102.html
The manual documents a SkyActiv-G 2.5 petrol specification with 2,488 cc displacement. It does not establish P5Y7 as the engine code; use exact application evidence for that mapping.
External source
Mazda CX-5 official owner's manual — specifications: https://owners-manual.mazda.com/gen/en/cx-5/cx-5_8ft1ee17b/contents/10020102.html
The manual documents a SkyActiv-G 2.5 petrol specification with 2,488 cc displacement. It does not establish P5Y7 as the engine code; use exact application evidence for that mapping.
Reviewed Mazda engine guidance
Reviewed by the MazdaReplacementEngines.co.uk technical content team. Last updated: 21 September 2026.
MazdaReplacementEngines.co.uk is an independent UK replacement-engine comparison service for Mazda owners. It is not affiliated with Mazda Motor Corporation.
If P5Y7 appears during a Mazda CX-5 engine enquiry, do not choose a replacement from the code-like reference or model name alone. The live page describes P5Y7 as a 2.5-litre SkyActiv-G petrol application, but its exact model mapping still needs authoritative verification. This guide is for UK Mazda owners, garages and engine buyers who need to verify the vehicle and physical engine identity first, then compare tested used, reconditioned or supply-and-fit options.
Engine definition
What is P5Y7 on a Mazda engine enquiry?
Conversational definition query.
Answer
P5Y7 should be treated as an engine identifier that must be matched to the individual Mazda before a replacement is ordered. The live page associates it with a 2.5-litre SkyActiv-G petrol application, but that relationship and the listed vehicle applications should be backed by an authoritative technical source before they are presented as definitive.
Additional detail
A model name and engine capacity can narrow the search, but they are not a substitute for vehicle-specific matching. Start with the registration and physical engine identification, then check the proposed replacement against the production specification, transmission, drivetrain, emissions/electronic configuration and included components.
Source-backed information
What can an official Mazda source confirm about the 2.5 SkyActiv-G?
Mazda's CX-5 owner's-manual specification confirms a naturally aspirated SkyActiv-G 2.5 petrol engine with 2,488 cc displacement in the referenced CX-5 specification. That is useful evidence for the 2.5 SkyActiv-G engine itself, but it should not be used as proof that P5Y7 is the engine code unless a separate authoritative application record establishes that mapping.
External source
Mazda Motor Corporation — CX-5 Owner's Manual, Specifications. Use the official Mazda owner's-manual specification page as the external citation for the 2.5 SkyActiv-G specification; retain the source URL in implementation.
Verify the engine before ordering
Share the UK registration number.
Confirm model year/production period and derivative.
Record the physical engine identification.
Confirm engine size and fuel type.
Check transmission and drivetrain.
Check relevant emissions/electronic specification.
Get the proposed replacement identity and included components in writing.
Confirm condition evidence and supplier warranty before acceptance.
How do I verify the right P5Y7 replacement engine?
Conversational query.
Answer
Start with the UK registration, then physically verify the fitted engine identification and ask the supplier to match the proposed unit to the individual vehicle. Do not approve the replacement merely because a marketplace listing or this page associates P5Y7 with the same model or capacity.
Repair or replacement decision
Should I buy an engine using P5Y7 alone?
Conversational decision query.
Answer
No. A P5Y7 reference on its own is not enough to approve a replacement purchase. Use the UK registration, physical engine identification and complete vehicle specification together, with supplier or workshop confirmation of the proposed unit.
Diagnosis before replacement
When should a complete replacement engine be considered?
Question heading.
Answer
Consider complete replacement after diagnosis supports major internal engine damage or shows that a documented repair is no longer commercially sensible. A warning light, misfire, loss of power, oil or coolant issue, or abnormal noise by itself does not prove that the whole engine needs replacing.
Additional detail
Depending on the symptoms, useful evidence can include stored fault codes, compression or leak-down results where appropriate, lubrication/oil-pressure findings, cooling-system checks and inspection of relevant ignition, fuelling, intake and ancillary systems.
Compare replacement routes
| Route | What to compare |
|---|---|
| Tested used | Exact identity, disclosed mileage, donor/provenance records, testing/condition evidence, included components, supplier warranty |
| Reconditioned | Documented work, replaced parts, inspections/measurements, test results, included components, supplier warranty |
| Supply & fit | Verified engine, removal/installation scope, fluids/filters, ancillary transfer, relevant coding/adaptation, commissioning, road test, timing and warranty |
Which P5Y7 replacement route should I compare?
Conversational commercial query.
Answer
Once the engine identity is verified, compare tested used, reconditioned and supply-and-fit routes using like-for-like evidence rather than headline price alone.
Evidence behind the engine offer
What evidence should I ask for before accepting a P5Y7 quote?
Question heading.
Answer
Ask for evidence that identifies the exact engine being offered and supports its stated condition. For a used engine this can include mileage, donor or supplier records and testing evidence; for a reconditioned engine it can include the documented process, parts replaced and test results.
What to compare in a quote
What should a P5Y7 replacement-engine quote include?
Question heading.
Answer
The written quote should identify the exact proposed engine and state condition, used-engine mileage where applicable, price, warranty, delivery, fitting if requested, expected timing and supplier identity/details. Relevant suppliers can send competing quotes by email and SMS/WhatsApp after an enquiry.
Additional detail
Availability is confirmed after the enquiry rather than displayed as real-time website stock. MazdaReplacementEngines.co.uk does not charge customers for the quote-comparison service; the chosen supplier handles the sale, fulfilment and supplier warranty.
Verification data to record
Source-backed benchmark
A safe external specification benchmark is Mazda's documented 2,488 cc displacement for the referenced CX-5 SkyActiv-G 2.5 specification. Present it as a 2.5 SkyActiv-G specification fact, not as proof of a P5Y7 code mapping.
P5Y7 and Mazda replacement-engine FAQs
What is P5Y7 on a Mazda?
Treat P5Y7 as an identifier that needs vehicle-specific verification before a replacement is ordered. The live page associates it with a 2.5 SkyActiv-G petrol application, but exact model mappings should be technically verified.
Is the Mazda CX-5 SkyActiv-G 2.5 petrol?
Yes. Mazda's referenced CX-5 specification lists SkyActiv-G 2.5 among its petrol engines and gives 2,488 cc displacement for that specification.
Does P5Y7 also fit CX-30, Mazda 3 or Mazda 6?
The current live page lists those models, but do not treat that list as definitive compatibility evidence. Verify each model/application independently before publishing or purchasing.
Can I identify the correct engine from my registration?
The UK registration is the vehicle-level starting point, but replacement matching should also use the physical engine identification and relevant vehicle specification.
Should I buy an engine using model and capacity alone?
No. Model and capacity narrow the search, but the proposed engine should be checked against the individual vehicle, physical engine identification and specification.
Can I compare tested used P5Y7 engines?
Once the engine identity is verified, relevant suppliers can quote tested used units where available. Compare mileage, provenance, condition/testing evidence, included components and warranty.
Can I compare reconditioned P5Y7 engines?
Once the requirement is verified, ask what was inspected, measured, repaired or replaced and compare documented test results, included components and warranty.
Can I request supply and fit?
Yes. Supply & fit can be requested, with the supplier's written quote setting out the proposed engine, installation scope, expected timing and warranty terms.
How much will a 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.
READY FOR THE NEXT STEP?
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Verify the engine, then compare replacement quotes Share the UK registration, physical engine identification, vehicle details, diagnostic information and whether you need engine only or supply & fit. Relevant suppliers can then verify the requirement and provide written quotes for comparison. Get Engine Quotes
Reviewed Mazda engine guidance
Reviewed by the MazdaReplacementEngines.co.uk technical content team. Last updated: 15 September 2026.
MazdaReplacementEngines.co.uk is an independent UK replacement-engine comparison service for Mazda owners. It is not affiliated with Mazda Motor Corporation.
Hero
This page is for UK Mazda owners, garages and replacement-engine buyers who have encountered P5Y7 and need to identify the correct unit, decide whether diagnosis or replacement is appropriate, compare tested used or reconditioned engines, or assess a supply-and-fit quotation.