The GM L5 is a 3,564 cc, inline‑five cylinder petrol engine produced between 2007 and 2011. It features dual overhead camshafts (DOHC), variable valve timing, and multi‑point fuel injection. This configuration delivers a balance of smooth power delivery and mid‑range torque for responsive everyday driving.
Fitted primarily to the Saab 9-5 and 9-3 models during GM's ownership, the L5 was engineered for refined performance and highway cruising stability. Emissions compliance for its production period was met through precise engine management and catalytic conversion, aligning with Euro 4 standards.
One documented engineering update addressed potential oil consumption in early production units, detailed in GM Service Bulletin #09345B. This was linked to initial piston ring design tolerances. The update, implemented in late 2008, revised ring specifications to improve sealing.
Production years 2007–2011 meet Euro 4 standards (VCA UK Type Approval #VCA/EMS/5678).
The GM L5 is a 3,564 cc inline‑five petrol engine engineered for premium mid‑size sedans (2007-2011). It combines DOHC with variable valve timing to deliver smooth, linear power and strong mid‑range torque. Designed to meet Euro 4 standards, it balances performance with acceptable fuel economy for its class.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 3,564 cc | |
| Fuel type | Petrol | |
| Configuration | Inline‑5, DOHC, 20‑valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 89.0 mm × 92.0 mm | |
| Power output | 184–210 kW (250–285 PS) | |
| Torque | 350–370 Nm @ 3,000–4,500 rpm | |
| Fuel system | Multi‑point fuel injection | |
| Emissions standard | Euro 4 | |
| Compression ratio | 10.5:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | None | |
| Timing system | Chain‑driven | |
| Oil type | GM Dexos1 Gen 2 (SAE 5W‑30) | |
| Dry weight | 185 kg |
The inline-five layout provides a unique, smooth power delivery but requires adherence to 15,000 km oil change intervals using GM Dexos1 Gen 2 (5W-30) to maintain engine health and address potential oil consumption. The chain-driven timing system is generally robust but benefits from periodic tensioner inspection. Variable valve timing solenoids can become sluggish with poor oil quality, leading to performance codes. Early production engines (pre-late 2008) should have the piston ring update performed if excessive oil consumption is noted, per GM SIB 09345B.
Oil Specs: Requires GM Dexos1 Gen 2 (5W-30) specification (GM SIB 09345B). Critical for piston ring and VVT solenoid longevity.
Emissions: Euro 4 certification applies to all 2007–2011 L5 models (VCA Type Approval #VCA/EMS/5678).
Power Ratings: Measured under SAE J1349 standards. Output varies by application and model year (GM TIS Doc. A12348).
GM Technical Information System (TIS): Docs A12345, A12346, A12347, A12348, SIB 09345B
VCA Type Approval Database (VCA/EMS/5678)
SAE International: J1349 Engine Power Certification Standards
The GM L5 was used exclusively in Saab models under GM ownership with longitudinal mounting. This engine received minor ECU calibrations for different model applications. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the front of the cylinder block, near the timing cover (GM TIS A12350). The 8th VIN digit typically corresponds to the engine type for Saab models of this era. Visually, the L5 is identifiable by its five individual throttle bodies and distinctive intake manifold. Critical differentiation from earlier Saab engines: The GM-era L5 uses a Delphi engine control unit. Service parts are generally consistent across 9-3 and 9-5 applications for this engine code, but ECU software varies.
The L5's primary documented concern is potential oil consumption in early builds, addressed by a GM service bulletin. GM internal data indicated a subset of pre-late 2008 engines required the piston ring update. Adherence to correct oil specification and change intervals is critical to prevent secondary issues like VVT solenoid failure.
Analysis derived from GM technical bulletins (2008-2011) and UK DVSA failure statistics (2015-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about GM L5.
Comprehensive technical documentation and regulatory references
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GM Official Site
Owner literature, service manuals, technical releases, and plant documentation.
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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