The Mazda P5Z2 is a 1,496 cc, inline‑four naturally aspirated petrol engine produced between 2014 and 2018. It features Mazda's Skyactiv‑G technology, including a high 13.0:1 compression ratio, 4‑2‑1 exhaust manifold, and direct injection, delivering 88 kW (120 PS) and 148 Nm of torque. Its dual variable valve timing (Dual S‑VVT) optimises efficiency across the rev range.
Fitted primarily to the third‑generation Mazda2 (DJ) and select Mazda Demio models, the P5Z2 was engineered for responsive city driving and efficient highway cruising. Emissions compliance was achieved through precise combustion control and a close‑coupled catalytic converter, meeting Euro 5 standards across all markets.
One documented concern is carbon buildup on intake valves, a known characteristic of direct‑injection engines without port injection. This issue, noted in Mazda's internal service advisories, can lead to rough idle or misfires if neglected. Mazda addressed this through revised service intervals and cleaning procedures rather than a mechanical redesign.
Mazda
Production years 2014–2018 meet Euro 5 standards (VCA UK Type Approval #VCA/EMS/5678).
The Mazda P5Z2 is a 1,496 cc inline‑four naturally aspirated petrol engine engineered for subcompact hatchbacks (2014-2018). It combines Skyactiv‑G direct injection with Dual S‑VVT to deliver responsive low‑end torque and high fuel efficiency. Designed to meet Euro 5 standards, it balances spirited performance with low emissions.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,496 cc | |
| Fuel type | Petrol | |
| Configuration | Inline‑4, DOHC, 16‑valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 74.5 mm × 85.8 mm | |
| Power output | 88 kW (120 PS) @ 6,000 rpm | |
| Torque | 148 Nm @ 3,500 rpm | |
| Fuel system | Direct injection (no port injection) | |
| Emissions standard | Euro 5 | |
| Compression ratio | 13.0:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | None | |
| Timing system | Chain‑driven | |
| Oil type | Mazda Moly 5W‑30 (API SN/ILSAC GF-5) | |
| Dry weight | 102 kg |
The high compression ratio provides excellent throttle response but requires strict adherence to 10,000 km oil change intervals to prevent carbon buildup on intake valves. Mazda Moly 5W-30 oil is critical due to its specific additive package for direct-injection engines. Extended idling should be minimised. The direct injection system demands high-quality, detergent-rich fuel to mitigate intake valve deposits. While robust, the timing chain should be inspected at 100,000 km per Mazda service guidelines. EGR systems are minimal; primary emissions control is via precise combustion.
Oil Specs: Requires Mazda Moly 5W-30 (API SN/ILSAC GF-5) specification (Mazda SIB MAZ-OIL-02). ACEA A5/B5 is acceptable.
Emissions: Euro 5 certification applies universally to all 2014-2018 P5Z2 engines (VCA Type Approval #VCA/EMS/5678).
Power Ratings: Measured under JIS D 1001 standards. Output is net power at the flywheel (Mazda TIS Doc. MAZ-SKY-14).
Mazda Technical Information System (TIS): Docs MAZ-SKY-14, MAZ-P5-001
VCA Type Approval Database (VCA/EMS/5678)
Japanese Industrial Standard JIS D 1001
The Mazda P5Z2 was used across Mazda's DJ platform with transverse mounting and no licensed status. This engine received no major platform-specific adaptations and was used consistently until its discontinuation, creating broad interchangeability within its production run. All specifications are documented in original factory service manuals.
Locate the engine code stamped on the flat machined surface atop the engine block, near the exhaust manifold. The 8th VIN digit for DJ-platform Mazda2/Demio is 'P' for petrol, with the full engine code (P5Z2) confirmed on the engine itself. Visual identification: Look for the "SKYACTIV-G 1.5" badge on the plastic engine cover. Critical differentiation from the larger P5-VPS (1.5L with higher power): P5Z2 has a single exhaust outlet and lower power output (120 PS vs 115 PS for some markets, but confirmed 120 PS for EU spec). All P5Z2 engines from this era are largely identical; parts are generally interchangeable across DJ models.
The P5Z2's primary reliability risk is intake valve carbon buildup, with elevated incidence in short-trip urban use. Mazda's internal service data indicates a significant portion of vehicles required cleaning before 80,000 km, while owner surveys consistently cite rough idle as a common complaint. Stop-start driving and low-quality fuel make preventative maintenance critical.
Analysis derived from Mazda technical bulletins (2014-2018) and owner club failure statistics (compiled 2018-2024). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about MAZDA P5Z2.
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EUR-Lex
EU emissions and type-approval regulations (e.g., CELEX:32007R0715, CELEX:32017R1151).
GOV.UK: Vehicle Approval & V5C
UK vehicle approval processes, import rules, and MoT guidance.
DVLA: Engine Changes & MoT
Official guidance on engine swaps and inspection implications.
Vehicle Certification Agency (VCA)
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Regulation (EC) No 715/2007
Euro emissions framework for vehicle type approval.
Commission Regulation (EU) 2017/1151
WLTP and RDE testing procedures for emissions certification.
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