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 applications. Emissions compliance is achieved via gasoline particulate filters (GPF), twin catalytic converters, and precise lambda control, meeting Euro 6d standards under EU Regulation (EU) 2018/858.
One documented concern is premature wear of the high-pressure fuel pump (HPFP) cam follower under sustained high-load conditions. This issue is referenced in Porsche Technical Bulletin 9YP/04/21, which recommends inspection of the cam follower and HPFP at 80,000 km for track or aggressive-use vehicles.
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 twin twin-scroll turbos deliver immense low-end torque with minimal lag, but the direct injection system is sensitive to carbon buildup on intake valves due to lack of fuel wash. Use only high-detergent premium fuel and consider intake cleaning every 60,000 km. The high-pressure fuel pump relies on a cam-driven follower prone to wear under high-load conditions—inspect per SIB 9YP/04/21 at 80,000 km in performance use. Porsche C4 0W-40 oil is mandatory to protect the gasoline particulate filter (GPF). Allow 1-minute cooldown after hard driving to prevent turbo bearing coking.
Oil Specs: Requires ACEA C4 0W-40 oil (Porsche C4 spec) per PT‑2022. Non-C4 oils risk GPF clogging and warranty denial.
Emissions: Euro 6d certification confirmed for all 2020–present MCN.CC engines (EU Regulation (EU) 2018/858, VCA Type Approval #VCA/EMS/9YPG).
Power Ratings: Measured under DIN 70020. Output verified for Cayenne Turbo GT (Porsche PT‑2022).
Porsche Technical Information System (TIS): Docs P9YP‑MCNCC, SIB 9YP/04/21
EU Regulation (EU) 2018/858 on vehicle emissions
Porsche Parts Catalogue (ETK) 2023 Edition
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.
Locate the engine code stamped on the left-side engine block near the exhaust manifold—“MCN.CC” confirms this variant. The Cayenne Turbo GT features unique aerodynamic bodywork, center-lock wheels, and active rear spoiler. MCN.CC is differentiated from earlier MCN.C by higher boost, revised intercooling, and Euro 6d compliance hardware including GPF. Do not confuse with Audi’s C8-based V8 engines, which share architecture but use different calibration and emissions tuning.
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.
Find answers to most commonly asked questions about PORSCHE MCN-CC.
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