The Porsche M 96.76 is a 3,600 cc, water‑cooled flat‑six petrol engine produced between 2003 and 2005. It featured Bosch Motronic ME 7.8 electronic fuel injection, dual overhead camshafts (DOHC), and a 24‑valve layout. In the 996 Turbo S and GT2 it delivered 382 kW (520 PS) and 680 Nm of torque, with a redline of 6,500 rpm.
Fitted exclusively to the 996 — generation 911 GT2 and limited — edition Turbo S, the M 96.76 was Porsche’s highest — output variant of the water — cooled M 96 ser…
Production years 2003–2005 meet Euro 4 emissions standards under EU Regulation 715/2007 .
The Porsche M 96.76 is a 3,600 cc flat‑six twin‑turbocharged petrol engine engineered for the 996 GT2 and Turbo S (2003–2005). It combines Bosch Motronic ME 7.8 engine management with twin K24 turbochargers and DOHC architecture to deliver extreme performance with Euro 4 compliance. Designed as the ultimate evolution of the M 96 lineage, it balances race-derived outputs with road-legal emissions standards through water-cooling and advanced catalyst systems.
| Parameter | Value | Source |
|---|---|---|
Displacement | 3,600 cc | |
Fuel type | Petrol (Unleaded) | |
Configuration | Flat‑6, DOHC, 24‑valve | |
Aspiration | Twin-turbocharged | |
Bore × stroke | 100.0 mm × 76.4 mm | |
Power output | 382 kW (520 PS) | |
Torque | 680 Nm @ 3,500 rpm | |
Fuel system | Bosch Motronic ME 7.8 sequential electronic injection | |
Emissions standard | Euro 4 | |
Compression ratio | 8.5:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Twin K24 turbochargers (air-to-air intercooled) | |
Timing system | Chain-driven DOHC with hydraulic tensioners | |
Oil type | Refer to vehicle handbook / manufacturer specification | |
Dry weight | 198 kg |
The Porsche M 96.76 was used exclusively in Porsche's 996 GT2 and limited-run 996 Turbo S platforms with rear-engine, longitudinal mounting and no external licensing. This engine featured reinforced internals, revised turbochargers, and a modified exhaust over the standard M 96/70. Only 1,370 GT2 and 1,500 Turbo S units were produced globally, creating high collectibility and strict parts traceability. All adaptations are documented in OEM technical bulletins.
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The M 96.76's primary reliability risk is cylinder bore scoring due to Nikasil liner sensitivity under extreme thermal cycling, with elevated incidence in track or hot‑climate use. Porsche internal data from 2005 indicated over 8 % of GT2 engines showed early scoring signs before 50,000 km, while specialist workshops correlate insufficient warm-up with accelerated wear. Extended full-load operation without cooldown cycles exacerbates thermal stress, making thermal management and oil quality critical.
Analysis derived from Porsche technical bulletins (2003–2005) and European specialist workshop data (2005–2023). 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 M 96.76 delivers exceptional performance but demands disciplined thermal management. Bore scoring is a known risk in high-load use—proper warm-up, cooldown, and non-ethanol fuel are essential. Well-maintained, low-stress examples can exceed 100,000 km, but track-driven engines often require rebuilds earlier.
Top issues include cylinder bore scoring, turbo oil coking, ME 7.8 sensor drift, and intercooler leaks. Porsche addressed thermal concerns in SIB 996/10/03. The Nikasil-lined block remains its Achilles’ heel under extreme conditions.
Exclusively the 996-generation 911 GT2 (2003–2005) and limited-edition Turbo S (2004–2005). Only ~2,900 units were built globally. All are rear-engine, high-performance coupés—the GT2 is RWD; the Turbo S is AWD.
Aftermarket ECU tuning is common on the M-96-76 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.
Approximately 18.5 L/100km (city) and 12.0 L/100km (highway), or ~15 mpg UK combined. Aggressive driving can exceed 25 L/100km. The twin-turbo setup prioritizes power over efficiency.
Yes. The M 96.76 is an interference engine—pistons and valves occupy the same space if timing fails. Chain-driven DOHC with hydraulic tensioners is generally robust, but debris from bore scoring can cause secondary valvetrain damage.
Porsche specifies 10W‑60 synthetic oil meeting ACEA A3/B3 standards (e.g., Porsche Longlife). Change oil every 10,000 km or 12 months—whichever comes first—and always allow proper warm-up before load application.
Comprehensive technical documentation and regulatory references
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EUR-Lex
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
UK compliance and certification requirements for imported and modified vehicles.
VCA Certification Portal
Type-approval guidance and documentation.
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