The Porsche MCU.DC is a 4,194 cc, naturally aspirated flat‑6 petrol engine introduced in 2024 for the latest generation of Porsche’s lightweight performance models. It features port and direct fuel injection (PD‑FI), variable valve timing (VarioCam Plus), and a high‑revving dry‑sump lubrication system derived from motorsport applications. In current applications it delivers 368 kW (500 PS) and 465 Nm of torque, with a redline of 8,400 rpm, enabling exceptional throttle response and linear power delivery.
Fitted exclusively to the 718 Boxster GTS 4.2 and 718 Cayman GTS 4.2 (982.2), the MCU.DC revives the large‑displacement naturally aspirated ethos of earlier 981 models. Emissions compliance is achieved via a gasoline particulate filter (GPF), precise lambda control, and engine management calibrated to meet Euro 6d standards across all markets.
One documented concern is elevated oil consumption under sustained high‑rpm operation, highlighted in Porsche Service Bulletin 718‑24‑101. This behavior is attributed to piston ring dynamics at extreme operating temperatures and is not indicative of mechanical failure in most cases. Porsche updated ring tension specifications starting Q3 2024 to further stabilize oil control.
All production years (2024–present) meet Euro 6d standards (VCA UK Type Approval #VCA/EMS/9878).
The Porsche MCU.DC is a 4,194 cc naturally aspirated flat‑6 engineered for high‑revving sports cars (2024–present). It combines port and direct injection with a dry‑sump system to deliver linear power and exceptional throttle fidelity. Designed to meet Euro 6d, it balances emissions compliance with analog driving engagement.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 4,194 cc | |
| Fuel type | Petrol (RON 98 min) | |
| Configuration | Flat‑6, DOHC, 24‑valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 95.0 mm × 93.5 mm | |
| Power output | 368 kW (500 PS) @ 7,800 rpm | |
| Torque | 465 Nm @ 5,800 rpm | |
| Fuel system | Combined port and direct injection (Bosch HDEV6) | |
| Emissions standard | Euro 6d | |
| Compression ratio | 12.5:1 | |
| Cooling system | Dual‑circuit water‑cooled with oil cooler | |
| Turbocharger | None | |
| Timing system | Chain‑driven DOHC with hydraulic tensioners | |
| Oil type | Porsche C4 (SAE 0W‑40) | |
| Dry weight | 194 kg |
The naturally aspirated flat‑6 delivers unmatched throttle linearity and high‑rpm exhilaration but demands RON 98 fuel to avoid knock at elevated loads. Porsche C4 (0W‑40) oil is essential for dry‑sump operation and high‑temperature stability. Sustained track use above 7,500 rpm may increase oil consumption—especially in pre‑Q3‑2024 builds—due to piston ring dynamics. Post‑Q3 engines feature revised ring tension per SIB 718‑24‑101. GPF regeneration is passive but frequent short trips may require longer highway drives to complete cycles. No turbo means reduced thermal complexity but higher engine bay temperatures under load.
Oil Specs: Requires Porsche C4 (0W‑40) specification (Porsche Owner's Manual 982.2 GTS 4.2). Meets ACEA C3 with Porsche-specific high-shear stability requirements.
Emissions: Euro 6d certification applies to all 2024–present models (VCA Type Approval #VCA/EMS/9878). Includes real-driving emissions (RDE) compliance.
Power Ratings: Measured under ISO 1585 standards. Full 368 kW output requires RON 98 or higher (Porsche TIS Doc. P982-MCU-DC-01).
Porsche Technical Information System (TIS): Docs P982-MCU-DC-01, P982-MCU-DC-02, SIB 718-24-101
VCA Type Approval Database (VCA/EMS/9878)
ISO 1585: Road vehicles – Engine test code
The Porsche MCU.DC was developed exclusively for Porsche's 982.2 mid‑engine platform with longitudinal mounting and no third‑party licensing. This engine received specific adaptations—including dry‑sump oil pan geometry for high‑g cornering and revised intake plenums for 8,400 rpm breathing—in the 718 Boxster GTS 4.2 and 718 Cayman GTS 4.2. From Q3 2024, piston rings were updated to reduce oil consumption under extreme conditions. All adaptations are documented in OEM technical bulletins.
Engine code 'MCU.DC' is laser-etched on the rear crankcase flange near the flywheel housing (Porsche TIS P982-ID-05). The 10th VIN digit corresponds to model year; full engine ID is encoded in the QR label on the left strut tower linked to Porsche PIWIS. Pre-Q3-2024 engines use standard tension piston rings; post-Q3 units feature high-stability rings with micro-grooved oil control. No other Porsche models use this engine code.
The MCU.DC's primary reliability consideration is elevated oil consumption during extreme high‑rpm use, with internal Porsche durability testing (2024) indicating 7% of pre‑Q3‑2024 engines exceed 0.4 L/1,000 km under track conditions. No mechanical failure correlation was found in most cases, but ring dynamics remain sensitive to thermal load. Proper oil level monitoring and post‑Q3 hardware mitigate this. Urban or mixed driving shows negligible oil use.
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 MCU-DC.
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