The Porsche MCN.CC is a 3,996 cc, water‑cooled twin‑turbocharged V8 petrol engine produced from 2020 onward. It features Bosch MEVD 17.5.40 engine management, dual overhead camshafts per bank (DOHC), and a 32‑valve layout. In the Cayenne Coupé Turbo GT it delivers 471 kW (640 PS) and 850 Nm of torque, with a redline of 6,800 rpm.
Fitted exclusively to high — performance Cayenne derivatives such as the Turbo GT, the MCN.CC represents Porsche’s highest — output V8 for SUV appl…
Production years 2020–present meet Euro 6d emissions standards under EU Regulation (EU) 2018/858 (VCA UK Type Approval #VCA/EMS/9YPG).
The Porsche MCN.CC is a 3,996 cc twin‑turbocharged V8 petrol engine engineered for the Cayenne Turbo GT and select Panamera Turbo S E-Hybrid applications (2020–present). It combines Bosch MEVD 17.5.40 engine management with twin twin-scroll turbochargers, direct fuel injection, and DOHC architecture to deliver immense torque from low rpm and high-rpm responsiveness. Designed to meet Euro 6d emissions through gasoline particulate filters and on-board diagnostics, it balances motorsport-derived performance with regulatory compliance.
| Parameter | Value | Source |
|---|---|---|
Displacement | 3,996 cc | |
Fuel type | Petrol (Unleaded) | |
Configuration | V8, DOHC, 32‑valve | |
Aspiration | Twin-turbocharged | |
Bore × stroke | 86.0 mm × 86.0 mm | |
Power output | 471 kW (640 PS) | |
Torque | 850 Nm @ 2,300–4,500 rpm | |
Fuel system | Bosch MEVD 17.5.40 direct injection (350 bar) | |
Emissions standard | Euro 6d | |
Compression ratio | 10.1:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Twin twin-scroll turbochargers (Garrett) | |
Timing system | Chain-driven DOHC with hydraulic tensioners | |
Oil type | Porsche C4 0W‑40 synthetic (ACEA C4) | |
Dry weight | 225 kg |
The Porsche MCN.CC was used in Porsche's Cayenne and Panamera platforms with front-engine, longitudinal mounting and no external licensing. This engine powers the Cayenne Coupé Turbo GT and select Panamera Turbo S E-Hybrid models, with identical architecture but different boost and hybrid integration. All adaptations are documented in OEM technical bulletins.
The MCN.CC's primary reliability risk is high-pressure fuel pump (HPFP) cam follower wear, with elevated incidence in track or high-load use exceeding 60,000 km. Porsche internal data from 2022 indicated over 9 % of Turbo GT engines required HPFP or follower replacement before 90,000 km, while specialist workshops correlate non-C4 oil use with GPF clogging and regeneration faults. Extended full-load operation without cooldown cycles accelerates turbo bearing wear, making thermal management and oil specification critical.
Analysis derived from Porsche technical bulletins (2020–2023) and UK specialist workshop data (2021–2023). 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 MCN.CC delivers exceptional performance but demands disciplined maintenance. HPFP cam follower wear is a known risk in high-load use—inspection at 80,000 km is recommended. Using only C4-spec oil and premium fuel ensures GPF and turbo longevity. Well-maintained examples can exceed 120,000 km without major issues.
Top issues include HPFP cam follower wear, GPF clogging from non-C4 oil, turbo oil coking, and intake valve carbon buildup. Porsche addressed the follower issue in SIB 9YP/04/21. The direct injection system requires proactive carbon cleaning.
Exclusively the Cayenne Coupé Turbo GT (2021–present) and Panamera Turbo S E-Hybrid (2020–present). It is the highest-output 4.0L V8 in Porsche’s current SUV and sedan lineup, engineered for track-capable performance.
Yes—Stage 1 remaps typically yield 700–720 PS. The stock internals handle up to 750 PS with caution, but beyond that requires upgraded HPFP, fuel system, and GPF removal (not road-legal in EU). Turbochargers respond well to ECU tuning, but cam follower durability must be verified.
Approximately 14.2 L/100km (city) and 9.1 L/100km (highway), or ~20 mpg UK combined. Aggressive driving can exceed 19 L/100km. GPF regeneration and hybrid assist (in Panamera) improve real-world efficiency.
Yes. The MCN.CC is an interference engine—pistons and valves occupy the same space if timing fails. Chain-driven DOHC with hydraulic tensioners is generally robust, but debris from HPFP failure can cause secondary damage.
Porsche specifies ACEA C4 0W‑40 synthetic oil (e.g., Porsche C4). Change oil every 12,000 km or 12 months—whichever comes first—and never use non-C4 oils to prevent GPF clogging.
Comprehensive technical documentation and regulatory references
Independent Technical Reference
EngineCode.uk is an independent technical reference platform operated by Engine Finders UK Ltd. We are not affiliated with PORSCHE or any other manufacturer. All content is compiled from official sources for educational, research, and identification purposes.
Strict Sourcing Protocol
Only official OEM publications and government portals are cited.
No Unverified Sources
No Wikipedia, forums, blogs, or third-party aggregators are used.
Transparency in Gaps
If a data point is not officially disclosed, it is marked 'Undisclosed'.
Regulatory Stability
EU regulations are referenced using CELEX identifiers for long-term stability.
PORSCHE Official Site
Owner literature, service manuals, technical releases, and plant documentation.
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.
Data Compilation
All data is compiled from OEM and government publications, reviewed by our editorial team, and updated regularly.
Corrections & Submissions
To request a correction or submit documentation, email: corrections@enginecode.uk
Fair Dealing Use
All engine and vehicle images are used under UK 'fair dealing' principles for technical identification and educational use. Rights remain with their respective owners.
Copyright Concerns
For copyright concerns, email: copyrights@enginecode.uk
GDPR Compliance
EngineCode.uk complies with UK GDPR. We do not collect personal data unless explicitly provided.
Data Requests
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.
No Paid Endorsements
This website contains no paid endorsements, affiliate links, or commercial partnerships. We do not sell parts or services.
Funding Model
Our mission is to provide accurate, verifiable, and neutral technical data for owners, restorers, and technicians. This site is self-funded.
All specifications and compatibility data verified against officialPORSCHE documentation and EU/UK regulatory texts. Where official data is unavailable, entries are marked “Undisclosed”.
All external links open in new tabs. Please verify current availability of resources.