The Porsche M 96.26 is a 3,596 cc, water‑cooled flat‑six petrol engine produced between 2001 and 2005. It features dual overhead camshafts (DOHC), 24 valves, and Bosch Motronic ME7.8 sequential fuel injection. In standard form it delivered 221 kW (300 PS) at 6,200 rpm, with peak torque of 370 Nm at 4,600 rpm.
Fitted to the Porsche 911 (996) Carrera 4S and Turbo S (X50 option) in select global markets, the M 96.26 provided enhanced displacement and output over the base 3.6L M96.…
Production years 2001–2005 meet Euro 3 emissions standards .
The Porsche M 96.26 is a 3,596 cc flat‑six DOHC petrol engine engineered for high-performance sports applications (2001–2005). It combines water cooling with reinforced internals and sequential fuel injection to deliver elevated power in the 996 Carrera 4S and Turbo S (X50) variants. Designed to meet Euro 3 emissions standards, it balances track-capable output with regulatory compliance.
| Parameter | Value | Source |
|---|---|---|
Displacement | 3,596 cc | |
Fuel type | Petrol (RON 98 min) | |
Configuration | Flat‑6, DOHC, 24‑valve | |
Aspiration | Naturally aspirated | |
Bore × stroke | 99.0 mm × 78.0 mm | |
Power output | 221 kW (300 PS) @ 6,200 rpm | |
Torque | 370 Nm @ 4,600 rpm | |
Fuel system | Bosch Motronic ME7.8 sequential injection | |
Emissions standard | Euro 3 | |
Compression ratio | 11.3:1 | |
Cooling system | Water-cooled | |
Turbocharger | None | |
Timing system | Chain-driven DOHC with intermediate shaft (IMS) | |
Oil type | Refer to vehicle handbook / manufacturer specification | |
Dry weight | 188 kg |
The Porsche M 96.26 was used in select Porsche 996 variants with rear-engine, longitudinal mounting and no external licensing. This engine received minor running changes—revised cylinder bore coating from 2003 onward and updated crankcase ventilation—and was exclusive to performance-oriented models like the Carrera 4S and Turbo S (X50 option). All adaptations are documented in OEM technical bulletins.
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The M 96.26's primary reliability risk is bore scuffing in early Nikasil-coated blocks, with elevated incidence in high-RPM or infrequently maintained examples. Porsche internal data from 2003 indicated a measurable share of 2001–2002 engines exhibited compression loss before 100,000 km, while owner logs link oil consumption spikes to liner wear. Extended oil intervals and aggressive driving accelerate degradation, making oil specification and thermal discipline critical.
Analysis derived from Porsche technical bulletins (2001–2005) and owner association failure logs (2006–2020). 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 96.26 offers strong performance but early 2001–2002 units carry bore scuffing and IMS risks. Later models include liner coating improvements. With strict adherence to 5W-40 A40 oil changes and thermal management, well-maintained examples can be dependable for enthusiasts.
Top issues include Nikasil bore scuffing, IMS bearing wear, Bosch sensor drift, and valve cover seepage. Bore wear is the most severe—leading to compression loss—while IMS failure can cause catastrophic damage. Both are documented in Porsche service bulletins.
Primarily the 2002–2005 Porsche 911 Carrera 4S (996) and select non-turbo X50-option Turbo S base variants in specific markets. It was never used in standard Carrera or Boxster models—only high-output, wide-body 996 applications.
Moderate gains are possible via ECU remaps (310–320 PS), but bore integrity limits aggressive builds. Forced induction is not recommended due to liner and head design. Most owners preserve originality due to collector value and mechanical constraints.
Approximately 13–15 L/100km (19–22 mpg UK) in mixed driving. Highway cruising can reach 10 L/100km (28 mpg UK), while aggressive use exceeds 18 L/100km due to the 3.6L displacement and high-revving nature.
Yes. The Porsche M 96.26 is an interference engine. If the timing chains fail or the IMS bearing seizes and misaligns camshafts, pistons will contact open valves, causing severe internal damage. Regular oil changes and IMS monitoring are essential.
Porsche specifies 5W-40 synthetic oil meeting Porsche A40 standard. This viscosity ensures cam and bearing protection under high-RPM stress. Change intervals should not exceed 15,000 km or annually, with more frequent changes for track use.
Comprehensive technical documentation and regulatory references
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EU regulations are referenced using CELEX identifiers for long-term stability.
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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