The Porsche MCW.JA is a 2,894 cc, twin‑turbocharged inline‑six petrol engine introduced in 2024 for the all‑electric‑hybrid 911 GTS e-Hybrid (992.2) and limited‑production variants. It features direct fuel injection, variable valve timing (VarioCam Plus), and a 90‑degree inline layout with DOHC architecture. Factory output is rated at 368 kW (500 PS) with peak torque of 590 Nm at 2,300–5,000 rpm, augmented by an electric motor to deliver combined system output of 470 kW (680 PS).
Fitted exclusively to the 992.2‑generation 911 GTS e-Hybrid (992.2), the MCW.JA represents Porsche’s first electrified flat‑six–derived inline powertrain, optimized for seamless torque fill and regenerative performance under hybrid architecture. 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 engineering adaptation is enhanced oil cooling for sustained high‑load hybrid operation, highlighted in Porsche Technical Service Bulletin TSB-2024-05. This addresses thermal stress from frequent electric torque boost and engine restart cycles, ensuring bearing and turbo durability under aggressive hybrid usage profiles.
All production years (2024–present) meet Euro 6d emissions standards across EU and UK markets (VCA UK Type Approval #VCA/EMS/6429).
The Porsche MCW.JA is a 2,894 cc twin‑turbo inline‑six petrol engine engineered for the 992.2 911 GTS e-Hybrid (2024–present). It combines port and direct fuel injection with twin-scroll turbochargers and hybrid-electric augmentation to deliver instantaneous torque and precise throttle response. Designed to meet Euro 6d standards with full hybrid integration, it bridges performance and regulatory compliance in Porsche’s electrification strategy.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 2,894 cc | |
| Fuel type | Petrol (RON 95 min, RON 98 optimal) | |
| Configuration | Inline-6, DOHC, 24‑valve | |
| Aspiration | Twin‑turbocharged | |
| Bore × stroke | 85.0 mm × 85.5 mm | |
| Power output | 368 kW (500 PS) @ 6,500 rpm | |
| Torque | 590 Nm @ 2,300–5,000 rpm | |
| Fuel system | Combined port + direct injection (PFI + DI), Bosch HDEV6 | |
| Emissions standard | Euro 6d (including RDE compliance) | |
| Compression ratio | 10.5:1 | |
| Cooling system | Dual-circuit water-cooled with enhanced oil cooler and hybrid-integrated thermal management | |
| Turbocharger | Twin-scroll turbochargers (BorgWarner) | |
| Timing system | Chain-driven DOHC with hydraulic tensioners | |
| Oil type | Porsche C3 specification (e.g., Mobil 1 ESP 0W-40) | |
| Dry weight | 198 kg |
The twin-scroll inline-six delivers seamless torque delivery enhanced by electric motor fill, ideal for both track and daily use. Strict adherence to 10,000 km or 12-month oil changes with C3-spec oil is critical for turbo and bearing health under frequent hybrid restart cycles. RON 98 fuel optimizes output and knock margin. The integrated GPF requires varied driving to maintain passive regeneration; repeated short trips may trigger active cycles. Enhanced oil cooling (per TSB-2024-05) mitigates thermal stress but cooldown after sustained high-load use remains recommended.
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 MY2024–present models (VCA Type Approval #VCA/EMS/6429).
Power Ratings: Measured per ISO 1585. Full 500 PS output requires RON 98 fuel for optimal performance (Porsche TIS MCW-JA-009).
Porsche Technical Information System (TIS): Docs MCW-JA-001 through MCW-JA-009
Porsche Service Information Bulletin (SIB) 32 04 24
VCA Type Approval Database (VCA/EMS/6429)
EU Regulation (EU) 2017/1151 (WLTP and RDE)
The Porsche MCW.JA was developed exclusively for Porsche's 992.2 platform with rear-engine hybrid integration and performance-oriented thermal architecture. This engine is reserved for the 911 GTS e-Hybrid and features hybrid-specific mounts, reinforced oil circuits, and twin-scroll turbos. From launch, minor revisions included updated oil cooler routing and revised PCV calibration, creating service part distinctions. No licensing partnerships exist. All adaptations are documented in OEM technical bulletins.
Engine code 'MCW.JA' is laser-etched on the upper forward face of the cylinder block near the intake manifold (Porsche TIS MCW-ID-01). The 7th VIN digit is 'W' for this engine family. Visual identification: black composite intake with twin-scroll turbo housings, hybrid high-voltage conduit routed along the right bank, and absence of alternator belt (replaced by 400V electric machine). Differentiate from MA2.2x (3.0L turbo flat-six) by inline configuration and hybrid ancillaries. Engine serial number begins with 'MCWJA' followed by production digits; all units include hybrid integration from production start.
The MCW.JA's primary reliability consideration is thermal management under frequent hybrid torque transitions, with elevated thermal load on main bearings and oil circuits. Porsche internal data (2025) indicates <1% of early units showed elevated oil degradation under extreme track-hybrid use, while UK DVSA records show no emissions or GPF failures due to robust RDE compliance. Aggressive launch control usage combined with rapid electric restarts increases thermal cycling, making oil quality and cooldown protocols critical for longevity.
Analysis derived from Porsche technical bulletins (2024–2025) and UK DVSA failure statistics (2024–2025). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about PORSCHE MCW-JA.
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