The Mazda PEXP is a 2,488 cc, inline‑four turbocharged petrol engine produced from 2021 to present. It features Skyactiv — G technology with a 10.5:1 compression ratio, direct fuel injection, and a twin — scroll turbocharger, delivering 187–189 kW (253–256 PS) and 434 Nm of torque for strong, linear acceleration and effortless overtaking. The twin — scroll turbo design minimizes lag, providing responsive power delivery across the rev range.
Fitted exclusively to the CX…
Mazda
Production years 2021–Present meet Euro 6d standards for all markets .
The Mazda PEXP is a 2,488 cc inline‑four turbocharged petrol engine engineered for premium mid-size SUVs (2021-Present). It combines Skyactiv-G technology with a twin-scroll turbocharger to deliver strong, responsive performance and high torque. Designed to meet stringent Euro 6d emissions standards, it balances power with refinement for the CX-60 and CX-70.
| Parameter | Value | Source |
|---|---|---|
Displacement | 2,488 cc | |
Fuel type | Petrol | |
Configuration | Inline‑4, DOHC, 16‑valve | |
Aspiration | Turbocharged (Twin-Scroll) | |
Bore × stroke | 89.0 mm × 100.0 mm | |
Power output | 187–189 kW (253–256 PS) | |
Torque | 434 Nm @ 2,000–4,500 rpm | |
Fuel system | Direct Injection | |
Emissions standard | Euro 6d | |
Compression ratio | 10.5:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Twin-Scroll Turbocharger | |
Timing system | Chain-driven camshafts | |
Oil type | Refer to vehicle handbook / manufacturer specification | |
Dry weight | Not specified in available OEM docs |
The Mazda PEXP was developed for Mazda's new rear-wheel-drive-based Large Product Group platform with longitudinal mounting. This engine is exclusive to premium SUVs and features specific calibration for the mild-hybrid system. All adaptations are documented in OEM technical bulletins.
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The PEXP's primary reliability consideration is maintaining the gasoline particulate filter (GPF) and using correct oil specifications. As a new engine, long-term data is limited, but Mazda's internal design reviews indicate robust mechanical reliability. Adherence to specified oil grades and driving patterns that allow for passive GPF regeneration are critical for sustained performance.
Analysis derived from Mazda technical bulletins (2021-Present) and preliminary field data. Repair procedures should follow manufacturer guidelines.
The most common questions about engine codes, what they mean, how to find them and how this database works
As a relatively new engine, long-term data is still emerging. However, its design is based on proven Skyactiv-G principles with robust components. The main considerations are proactive GPF maintenance and strict adherence to the specified 0W-20 oil. With proper care, it is expected to be very reliable.
Early reports and service bulletins highlight potential issues with the GPF clogging on short trips, turbocharger actuator/wastegate sticking, and minor intake valve carbon buildup. Oil dilution can occur under specific short-trip, cold-weather conditions. These are common characteristics of modern turbocharged direct-injection engines.
The PEXP 2.5T engine is currently used in the Mazda CX-60 (2021-Present) and CX-70 (2024-Present) premium SUVs. It is the top-tier petrol engine for these models, often paired with all-wheel drive and a mild-hybrid system.
Yes, ECU remapping is possible and can yield significant power and torque gains, often 20-30 kW extra. The engine's robust internals and twin-scroll turbo have headroom for safe tuning. However, this may impact emissions compliance, fuel economy, and potentially void the manufacturer's warranty.
Fuel economy is reasonable for its performance and size. Expect approximately 8.5-9.5 L/100km (30-33 mpg UK) combined in the CX-60. Real-world figures are highly dependent on driving style, with aggressive driving or frequent short trips significantly increasing consumption, especially if GPF regeneration is triggered often.
Yes. The Mazda PEXP is an interference engine. If the timing chain were to fail or jump significantly, the pistons would contact the valves, causing severe internal engine damage. Fortunately, the timing chain is designed to last the engine's lifetime under normal conditions.
Mazda mandates API SP (or ILSAC GF-6) specification 0W-20 viscosity oil. Using the correct low-viscosity oil is crucial for fuel economy, emissions system (particularly GPF) protection, and overall engine longevity. Do not substitute with thicker oils.
Comprehensive technical documentation and regulatory references
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Regulatory Stability
EU regulations are referenced using CELEX identifiers for long-term stability.
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)
UK type-approval authority for automotive products.
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.
GOV.UK: Vehicle Approval
UK compliance and certification requirements for imported and modified vehicles.
VCA Certification Portal
Type-approval guidance and documentation.
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