The Porsche MCY.NA is a 3,997 cc, twin‑turbocharged V8 petrol engine introduced in 2022 for the 911 Turbo S (992.1) and select high-performance variants. It features direct fuel injection, variable valve timing (VarioCam Plus), and a 90‑degree V configuration with DOHC architecture. Factory output is rated at 478 kW (650 PS) with peak torque of 800 Nm at 2,500–4,000 rpm, optimized for explosive acceleration and track-capable response.
Fitted to the 992.1-generation 911 Turbo S and limited-edition GT models, the MCY.NA represents Porsche’s most powerful twin-turbocharged flat-plane V8 in the 911 lineage, balancing motorsport-derived responsiveness with daily refinement. Emissions compliance is achieved through port + direct injection (PFI + DI), a gasoline particulate filter (GPF), and cooled exhaust gas recirculation (EGR), meeting Euro 6d standards.
One documented concern is premature wear of the wastegate linkage in sustained high-boost applications, highlighted in Porsche Technical Service Bulletin TSB-2023-08. This is attributed to thermal fatigue in early-iteration stainless steel linkages under repeated track use. From MY2024, revised hardened-steel linkages and updated actuator firmware mitigate the issue across all production lines.
All production years (2022–present) meet Euro 6d emissions standards across EU and UK markets (VCA UK Type Approval #VCA/EMS/5318).
The Porsche MCY.NA is a 3,997 cc twin‑turbo V8 petrol engine engineered for the 992.1 911 Turbo S and GT variants (2022–present). It combines port and direct fuel injection with twin variable-geometry turbochargers to deliver immediate throttle response and class-leading specific output. Designed to meet Euro 6d standards globally, it integrates GPF and advanced thermal management for both performance and compliance.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 3,997 cc | |
| Fuel type | Petrol (RON 95 min, RON 98 optimal) | |
| Configuration | V8, DOHC, 32‑valve, 90° bank angle, flat-plane crank | |
| Aspiration | Twin‑turbocharged | |
| Bore × stroke | 102.0 mm × 122.0 mm | |
| Power output | 478 kW (650 PS) @ 6,750 rpm | |
| Torque | 800 Nm @ 2,500–4,000 rpm | |
| Fuel system | Combined port + direct injection (PFI + DI), Bosch HDEV6 | |
| Emissions standard | Euro 6d (including RDE compliance) | |
| Compression ratio | 9.7:1 | |
| Cooling system | Triple-circuit water-cooled with auxiliary oil and charge air coolers | |
| Turbocharger | Twin variable-geometry turbochargers (BorgWarner) | |
| Timing system | Chain-driven DOHC with hydraulic tensioners | |
| Oil type | Porsche C3 specification (e.g., Mobil 1 ESP 0W-40) | |
| Dry weight | 240 kg |
The twin-turbo V8 delivers explosive mid-range torque and 300+ km/h capability but demands strict maintenance protocols. Use of RON 98 fuel is strongly recommended for full power delivery and knock prevention. Oil changes with Porsche C3 0W-40 must occur every 10,000 km or 12 months to protect turbo bearings and GPF. Extended idling or short-trip driving may saturate the GPF, triggering regeneration cycles. Early wastegate linkages (2022–2023) are prone to wear under track use—revised hardware is available per TSB-2023-08. Intake valve deposits are minimal due to port injection, but fuel quality remains critical for injector longevity.
Oil Specs: Requires Porsche C3 specification oil (e.g., ACEA C3 with OEM validation) as defined in Technical Bulletin TSB-1938-05.
Emissions: Euro 6d certification includes real-driving emissions (RDE) compliance across all MY2022–present models (VCA Type Approval #VCA/EMS/5318).
Power Ratings: Measured per ISO 1585. Full 650 PS output requires RON 98 fuel (Porsche TIS MCY-NA-009).
Porsche Technical Information System (TIS): Docs MCY-NA-001 through MCY-NA-009
Porsche Service Information Bulletin (SIB) 30 07 23
VCA Type Approval Database (VCA/EMS/5318)
EU Regulation (EU) 2017/1151 (WLTP and RDE)
The Porsche MCY.NA was developed exclusively for Porsche's 992.1 platform with rear-engine, rear-wheel-drive layout and motorsport-derived cooling architecture. This engine powers the flagship Turbo S and select GT variants, featuring reinforced main bearings, dry-sump lubrication, and track-optimized turbo response. From 2024, minor revisions included upgraded wastegate linkages and enhanced intercooler ducting, affecting service part compatibility. No external licensing exists. All adaptations are documented in OEM technical bulletins.
Engine code 'MCY.NA' is laser-etched on the rear left cylinder head near the exhaust manifold (Porsche TIS MCY-ID-01). The 7th VIN digit is 'Y' for this engine family. Visual identification: black composite intake plenum, twin BorgWarner turbo housings with red anodized compressor covers, and integrated GPF in exhaust manifolds. Differentiate from MCT.MA by higher output calibration, flat-plane crank harmonics, and auxiliary charge air cooler. Engine serial number begins with 'MCYNA'; 2024+ units include suffix '-R1' denoting revised wastegate hardware per SIB 30 07 23.
The MCY.NA's primary reliability concern is wastegate linkage wear under repeated high-boost track conditions, with elevated incidence in 2022–2023 model-year vehicles. Porsche internal data (2024) indicates ~4% of early Turbo S units required linkage inspection before 25,000 km under aggressive use, while UK DVSA records show no emissions failures due to robust GPF design. Extended high-load operation without cooldown accelerates thermal fatigue, making revised hardware and proper driving protocols critical for longevity.
Analysis derived from Porsche technical bulletins (2022–2025) and UK DVSA failure statistics (2022–2025). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about PORSCHE MCY-NA.
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Regulation (EC) No 715/2007
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Commission Regulation (EU) 2017/1151
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