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 thro…
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 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.
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.
The most common questions about engine codes, what they mean, how to find them and how this database works
The MCU.DC is engineered for durability under high‑revving conditions. Early builds (pre-Q3-2024) show slightly elevated oil consumption under track use, now addressed with revised rings. With proper oil, RON 98 fuel, and adherence to service intervals, it offers excellent longevity. Dry‑sump design enhances reliability during aggressive driving.
Main concerns are elevated oil consumption in pre‑Q3 units, GPF saturation from short trips, minor valve cover seepage, and early-batch ignition coil failures. All are documented in Porsche bulletins 718‑24‑101 and 718‑24‑015. Most issues are avoidable or easily rectified with updated parts.
Exclusively the 982.2-generation 718 Boxster GTS 4.2 and 718 Cayman GTS 4.2 (2024–present). No other Porsche, third-party, or hybrid models use this engine. It replaces the turbocharged 4.0L in GTS trims to deliver a naturally aspirated driving experience.
Porsche does not support ECU tuning. The engine is already optimized for 8,400 rpm operation with minimal safety margins. Aftermarket remaps offer negligible gains and risk catalytic/GPF damage. Most owners retain factory calibration to preserve the analog character and warranty coverage.
Approximately 11.8 L/100km combined (official WLTP). Real-world mixed driving yields 10–13 L/100km; track use can exceed 22 L/100km. Official figure is 24 mpg UK combined. High displacement and rev-happy nature inherently limit efficiency despite advanced injection.
Yes. Like all modern Porsche flat‑6 engines, the MCU.DC is an interference design. Timing chain failure—though extremely unlikely due to redundant tensioners and robust design—could cause piston‑valve contact. The system is engineered for full engine life under normal conditions.
Porsche C4 (0W‑40) synthetic oil is mandatory. It ensures high-temperature film strength for the dry‑sump system and protects against oil coking at high rpm. Oil changes are recommended every 15,000 km or annually. Non-approved oils risk ring stability and bearing wear.
Comprehensive technical documentation and regulatory references
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DVLA: Engine Changes & MoT
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Regulation (EC) No 715/2007
Euro emissions framework for vehicle type approval.
Commission Regulation (EU) 2017/1151
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