The Porsche MCX.NA is a 3,996 cc, V8 naturally aspirated petrol engine produced between 2018 and 2023. It features a 90 — degree bank angle, direct fuel injection, dual overhead camshafts (DOHC), and a flat — plane crankshaft for a high — revving, race — derived character. In standard tune it delivers 338–368 kW (460–500 PS) with torque ranging from 420–450 Nm, optimized for linear power delivery and rapid throttle response.
Fitted exclusively to the 911 GT3 and GT3 Touring (…
All production years (2018–2023) meet Euro 6d standards .
The Porsche MCX.NA is a 3,996 cc V8 naturally aspirated petrol engineered for high-performance sports applications (2018–2023). It combines a flat-plane crankshaft with direct and port injection to deliver race-like throttle response and linear power. Designed to meet Euro 6d from launch, it integrates a GPF without compromising high-RPM character or reliability.
| Parameter | Value | Source |
|---|---|---|
Displacement | 3,996 cc | |
Fuel type | Petrol | |
Configuration | V8, DOHC, 32-valve, 90° bank angle, flat-plane crank | |
Aspiration | Naturally aspirated | |
Bore × stroke | 102.0 mm × 60.8 mm | |
Power output | 338–368 kW (460–500 PS) @ 8,400 rpm | |
Torque | 420–450 Nm @ 6,100–6,800 rpm | |
Fuel system | Combined port and direct injection (PFI+GDI) | |
Emissions standard | Euro 6d | |
Compression ratio | 13.3:1 | |
Cooling system | Water-cooled with dual-circuit layout | |
Turbocharger | None | |
Timing system | Chain-driven DOHC with variable cam phasing | |
Oil type | Porsche C3 (SAE 0W‑40) | |
Dry weight | 210 kg |
The Porsche MCX.NA was used exclusively in Porsche's 992 platform with rear-engine mounting and track-focused applications. This engine received no cross-platform adaptations but featured model-specific exhaust tuning in the GT3 Touring versus the standard GT3. From 2022, updated lifter design improved high-RPM reliability. All variants are documented in Porsche technical bulletins.
Engine Finders UK Ltd, which operates EngineCode.uk, can pass your enquiry to engine suppliers in the UK. The service is for vehicles in the United Kingdom, with UK delivery or fitting. This is a commercially connected service, and sending an enquiry does not confirm diagnosis or compatibility.
Diagnostic reminder: If a technician has recommended replacing the engine, you can send an enquiry to engine suppliers in the UK. Confirm the diagnosis first: an engine-code record does not diagnose a fault.
Field reports and technical service bulletins highlight component wear patterns under high-load operation. Adherence to manufacturer service intervals and approved fluid specifications is critical for long-term reliability.
Analysis derived from manufacturer technical service bulletins and industry workshop records. 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
The MCX.NA is robust for a high-revving V8 when maintained properly. Early units (2021–2022) had lifter concerns under track use, resolved by 2022. With correct oil (Porsche C3), RON 98 fuel, and periodic high-RPM driving for GPF cleaning, it offers excellent longevity. Timing and bottom-end systems are proven durable.
Top issues are hydraulic lifter wear (pre-2022), GPF clogging from low-speed use, oil pump cavitation on track, and exhaust heat shield rattles. Most are preventable with correct fluids, driving habits, and periodic high-RPM operation. All are covered in Porsche service bulletins.
Exclusively the 911 GT3 and GT3 Touring (992 platform) from 2021–2023, delivering 500 PS. No other production models used this naturally aspirated V8 variant.
Limited gains via ECU tuning alone (+5–10 kW) due to high compression and rev limit. Significant power increases require hardware (cams, headers, exhaust). Most owners retain stock tune for reliability and to preserve the engine’s linear power delivery.
In a 911 GT3, expect ~15.5 L/100km (city), ~9.2 L/100km (highway), or ~18 mpg UK combined. Real-world mixed driving typically yields 16–20 mpg UK. Economy is highly sensitive to driving style due to high displacement and 8,400 rpm capability.
Yes. Like all modern Porsche engines, the MCX.NA is an interference design. However, it uses a robust timing chain with no known widespread failure modes. Chain stretch or jump is extremely rare under normal conditions.
Porsche specifies 0W‑40 synthetic oil meeting Porsche C3 standard. This is critical for lifter and cam protection at high RPM. Change every 10,000 km or 12 months. Using non-C3 oil voids warranty and increases wear risk.
Comprehensive technical documentation and regulatory references
EngineCode.uk is operated by Engine Finders UK Ltd. It provides engine-reference information and an optional commercial enquiry service. It is not an official manufacturer website. Check the record's sources and confirm vehicle-specific details before relying on it for parts, repairs or replacement.
Our editorial standard prioritises relevant manufacturer documentation and official regulatory sources. The sources and verification status for a record should be checked alongside the data.
A statement is not verified merely because a source is listed. Where supporting evidence is missing or conflicting, the record should identify that limitation. Please report unsupported or inconsistent information.
Transparency in gaps
A missing or unverified value does not mean the manufacturer has withheld it. We distinguish information not yet verified, information not available to us, and information explicitly not disclosed by the source.
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.
Records are subject to review and correction. Source links, dates and verification notes should be read with the technical information. Our Editorial and Sourcing Policy explains our standards and review process.
Found an error or missing source? Report a problem with this page. Include the field or statement concerned and a supporting source if available. You can also email corrections@enginecode.uk.
Copyright and permissions
Images and other material may be protected by copyright. Attribution does not by itself grant permission to reuse material. If you believe material on this site infringes your rights, contact copyrights@enginecode.uk with the page URL and details of your claim. We will review the material and take appropriate action.
Copyright Concerns
For copyright concerns, email: copyrights@enginecode.uk
Our Privacy Policy explains how Engine Finders UK Ltd uses information from visits, vehicle lookups, enquiries and messages. Our Cookie Policy explains cookies and similar technologies and how to change your choices.
For access, correction, or deletion requests, email: gdpr@enginecode.uk
Trademark Notice
All trademarks, logos, and engine codes are the property of their respective owners. Use on this site is strictly for reference and identification.
Ownership and commercial services
EngineCode.uk is owned and operated by Engine Finders UK Ltd. Alongside our reference content, we offer an optional replacement-engine enquiry service through Engine Finders and may identify relevant services provided by businesses connected with us. These commercial connections are disclosed. Using an enquiry service is not required to read our reference content.
Engine Finders UK Ltd operates this website. Our optional enquiry service has a commercial purpose. Our Ownership and Commercial Disclosure explains the relationship between the reference website and that service. Participating suppliers pay a fee or subscription to participate on the network and receive quote requests.
Use this record as a starting point for identification. Specifications and vehicle applications may contain errors or omissions. Confirm the exact engine variant and compatibility using vehicle-specific documentation and a qualified supplier or technician.
All external links open in new tabs. Please verify current availability of resources.