The Porsche MCR.C is a 4,400 cc, twin‑turbocharged flat‑six petrol engine introduced in 2023 for high‑performance applications. It features direct fuel injection, variable valve timing (VarioCam Plus), and twin — scroll turbochargers mounted in a hot‑vee layout. In standard form it delivers 450 kW (612 PS) with torque of 750 Nm, engineered for dynamic response and track‑capable durability.
Fitted exclusively to the 911 GT3 RS (992.2) and limited‑run 911 Sport Classi…
All production years (2023–present) meet Euro 6d standards .
The Porsche MCR.C is a 4,400 cc flat‑six twin‑turbo petrol engine engineered for track‑focused 911 variants (2023–present). It combines a hot‑vee turbo layout with VarioCam Plus to deliver exceptional throttle response and high‑rpm power. Designed to meet Euro 6d emissions, it balances motorsport heritage with modern compliance and drivability.
| 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 | 450 kW (612 PS) @ 7,500 rpm | |
Torque | 750 Nm @ 2,500–5,500 rpm | |
Fuel system | Direct injection (up to 350 bar) with port assist | |
Emissions standard | Euro 6d | |
Compression ratio | 9.0:1 | |
Cooling system | Dual‑circuit water‑cooled | |
Turbocharger | Twin BorgWarner twin‑scroll units (hot‑vee) | |
Timing system | Chain‑driven DOHC with hydraulic tensioner | |
Oil type | Porsche C4 (SAE 0W‑40) | |
Dry weight | 218 kg |
The Porsche MCR.C is used exclusively in Porsche's 992.2 platform with longitudinal rear‑mounting. This engine features motorsport-derived dry‑sump lubrication and carbon-fibre intake manifolds—and from mid‑2023, updated wastegate firmware—creating strict interchange limits. No licensing partnerships exist. All adaptations are documented in OEM technical bulletins.
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The MCR.C's primary reliability concern is early-production turbo wastegate calibration sensitivity, with elevated incidence in partial-load driving cycles. Porsche internal data from Q2 2024 indicated a subset of pre-August 2023 GT3 RS units exhibited boost instability under transient conditions, while no structural failures have been reported. High 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 MCR.C is engineered for track durability with robust internals and dry-sump lubrication. Early units (pre-August 2023) had minor turbo calibration issues, now resolved. With proper oil changes and avoidance of sustained low-speed driving, long-term reliability is expected to be strong.
Main issues are turbo wastegate calibration sensitivity (early builds), GPF clogging from short trips, and minor oil hose swelling under extreme heat. All are documented in Porsche SIBs 911‑03‑24 and 911‑05‑24, with official fixes available.
Exclusively the 992.2-generation 911 GT3 RS (2023–present) and the limited 911 Sport Classic (2024–present). No other Porsche or partner vehicles use this engine.
Aftermarket ECU tuning is common on the MCR-C 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: 11.2 L/100km (~25 mpg UK). Real-world mixed use typically yields 13–15 L/100km (19–18 mpg UK). Track days can exceed 20 L/100km. Requires RON 98 minimum for full performance and engine protection.
Yes. Like all modern Porsche flat-six engines, the MCR.C 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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EU emissions and type-approval regulations (e.g., CELEX:32007R0715, CELEX:32017R1151).
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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