The Porsche MCX.RA is a 4,400 cc, twin‑turbocharged flat‑six petrol engine introduced in 2024 for the 911 Turbo S (992.2). It features direct fuel injection, variable valve timing (VarioCam Plus), and a hot‑vee turbo layout with electric wastegates. In standard form it delivers 532 kW (724 PS) with torque of 800 Nm, engineered for exceptional throttle response and track‑capable performance.
Fitted exclusively to the 992.2‑generation 911 Turbo S and limited‑edition T…
All production years (2024–present) meet Euro 6d standards .
The Porsche MCX.RA is a 4,400 cc flat‑six twin‑turbo petrol engine engineered for flagship 911 Turbo S applications (2024–present). It combines a hot‑vee turbo architecture with forged internals and VarioCam Plus to deliver explosive power and high‑rpm refinement. Designed to meet Euro 6d emissions, it balances extreme performance with regulatory compliance and road usability.
| Parameter | Value | Source |
|---|---|---|
Displacement | 4,400 cc | |
Fuel type | Petrol (RON 98 min) | |
Configuration | Flat‑6, DOHC, 24‑valve | |
Aspiration | Twin‑turbocharged (hot‑vee) | |
Bore × stroke | 102.0 mm × 89.5 mm | |
Power output | 532 kW (724 PS) @ 7,000 rpm | |
Torque | 800 Nm @ 2,500–5,000 rpm | |
Fuel system | Direct injection (up to 350 bar) with port assist | |
Emissions standard | Euro 6d | |
Compression ratio | 9.5:1 | |
Cooling system | Dual‑circuit water‑cooled with oil cooler | |
Turbocharger | Twin BorgWarner e‑wastegate units (hot‑vee) | |
Timing system | Chain‑driven DOHC with hydraulic tensioner | |
Oil type | Porsche C4 (SAE 0W‑40) | |
Dry weight | 220 kg |
The Porsche MCX.RA is used exclusively in Porsche's 992.2 Turbo S platform with longitudinal rear‑mounting. This engine features motorsport-derived forged internals, carbon-fibre intake manifolds, and platform-specific cooling circuits—and from mid‑2024, revised fuel system logic—creating strict interchange limits. No licensing partnerships exist. All adaptations are documented in OEM technical bulletins.
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The MCX.RA's primary reliability concern is early-production high-pressure fuel system duty cycle instability under sustained boost. Porsche internal data from Q2 2025 indicated a subset of pre-October 2024 Turbo S units exhibited lean misfire during track use, while no structural failures have been reported. Extreme thermal loads and strict oil compliance make fluid quality and change intervals critical.
Analysis derived from manufacturer technical service bulletins and industry workshop records. 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 MCX.RA is engineered for extreme performance with reinforced internals and precise thermal management. Early 2024 units had minor fuel pump calibration issues, now resolved via ECU update. With proper oil changes (Porsche C4 0W‑40) and balanced usage that includes highway driving, long-term reliability is expected to be strong.
Main issues are fuel pump duty cycle instability (early 2024 builds), GPF clogging from urban use, turbo oil feed line swelling, and cam position sensor drift. All are documented in Porsche SIBs 992‑09‑24 and 992‑10‑24, with official fixes available.
Exclusively the 992.2-generation 911 Turbo S and Turbo S Exclusive (2024–present). No other Porsche or partner vehicles use this engine.
Aftermarket ECU tuning is common on the MCX-RA platform, but increasing boost or altering engine parameters accelerates component wear, impacts emissions compliance, and may void vehicle warranties. Any modifications should be evaluated carefully by a qualified specialist.
Official combined: 12.8 L/100km (~22 mpg UK). Real-world mixed use typically yields 15–18 L/100km (19–16 mpg UK). Track days can exceed 25 L/100km. Requires RON 98 minimum for full performance and engine protection.
Yes. Like all modern Porsche flat-six engines, the MCX.RA is an interference design. Timing failure would cause catastrophic valve-piston contact. However, it uses a maintenance-free chain with hydraulic tensioning—failures are extremely rare when oil is maintained.
Porsche C4 specification (SAE 0W‑40) synthetic oil. Must meet Porsche’s HTHS and low-SAPS requirements. Change every 10,000 km or 12 months, or before/after track events. Never use non-C4 oils.
Comprehensive technical documentation and regulatory references
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GOV.UK: Vehicle Approval & V5C
UK vehicle approval processes, import rules, and MoT guidance.
DVLA: Engine Changes & MoT
Official guidance on engine swaps and inspection implications.
Vehicle Certification Agency (VCA)
UK type-approval authority for automotive products.
Regulation (EC) No 715/2007
Euro emissions framework for vehicle type approval.
Commission Regulation (EU) 2017/1151
WLTP and RDE testing procedures for emissions certification.
GOV.UK: Vehicle Approval
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VCA Certification Portal
Type-approval guidance and documentation.
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