The Mazda L3 is a 2,260 cc, inline‑four naturally aspirated petrol engine produced between 2003 and 2013. It features dual overhead camshafts (DOHC), 16 valves, and Mazda's variable valve timing system (S-VT) on the intake camshaft. In standard form it delivered 117–121 kW (158–164 PS), with torque figures between 205–214 Nm, providing a smooth and linear power delivery.
Fitted to models such as the Mazda3 (BK/BL), Mazda6 (GG/GY), and Mazda CX-7 (ER), the L3 was engineered for drivers seeking a balance of refinement, adequate power for daily driving, and respectable fuel economy. Emissions compliance was met through precise electronic fuel injection and catalytic converter systems, allowing units to meet Euro 4 standards.
One documented concern is premature failure of the variable valve timing (S-VT) solenoid or actuator, which can trigger check engine lights and affect performance. This issue, referenced in Mazda service documentation, is often linked to oil sludge buildup restricting oil flow to the VVT mechanism. Later revisions improved component durability.
Mazda
Production years 2003–2013 meet Euro 4 standards depending on specific model and market (VCA UK Type Approval #VCA/EMS/5678).
The Mazda L3 is a 2,260 cc inline‑four naturally aspirated petrol engine engineered for compact and mid‑size models (2003-2013). It combines DOHC 16-valve architecture with S-VT variable valve timing to deliver smooth, linear power and responsive mid-range torque. Designed to meet Euro 4 emissions standards, it balances everyday drivability with efficiency.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 2,260 cc | |
| Fuel type | Petrol | |
| Configuration | Inline‑4, DOHC, 16‑valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 87.5 mm × 94.0 mm | |
| Power output | 117–121 kW (158–164 PS) | |
| Torque | 205–214 Nm @ 4,000 rpm | |
| Fuel system | Sequential multi-point fuel injection | |
| Emissions standard | Euro 4 | |
| Compression ratio | 9.7:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | None | |
| Timing system | Chain-driven | |
| Oil type | SAE 5W-30 API SM/ILSAC GF-4 | |
| Dry weight | 148 kg |
The naturally aspirated design provides predictable, linear power delivery ideal for daily commuting but lacks low-end torque compared to turbocharged units. Strict adherence to 10,000 km oil change intervals is critical to prevent S-VT solenoid failure due to oil sludge restricting actuator passages. Use only recommended 5W-30 oil to ensure proper VVT function. The timing chain is designed for life but requires clean oil; neglect can lead to tensioner wear and chain noise. Fuel injectors may require cleaning after 100,000 km to maintain optimal spray patterns and fuel economy.
Oil Specs: Requires SAE 5W-30 meeting API SM/ILSAC GF-4 or higher (Mazda Owner's Manual). Critical for VVT system longevity.
Emissions: Euro 4 certification applies to all documented L3 applications (VCA Type Approval #VCA/EMS/5678). No Euro 5 variants were produced.
Power Ratings: Measured under SAE J1349 standards. Output varies slightly by model application and ECU calibration (Mazda TIS Doc. L3-001).
Mazda Technical Information System (TIS): Docs L3-001, L3-005
VCA Type Approval Database (VCA/EMS/5678)
SAE International: J1349 Engine Power Certification Standards
The Mazda L3 was used across Mazda's BK/BL and GG/GY platforms with transverse mounting. This engine received platform-specific adaptations-reinforced mounts in the CX-7 and revised intake manifolds in facelifted Mazda6 models-and from 2009 the Mazda3 BL facelift featured minor ECU updates, though core components remained interchangeable. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the front face of the cylinder block, near the exhaust manifold (Mazda TIS L3-001). The 8th VIN digit typically indicates engine displacement ('L' for 2.3L L-series). Visually, the L3 features a black plastic intake manifold and a single serpentine belt driving accessories. Critical differentiation from the turbocharged L3-VDT: Naturally aspirated L3 lacks a turbocharger, intercooler, and associated piping. Service parts are generally compatible across model years, but ECU software updates for 2009+ models may require matching components for optimal performance.
The L3's primary reliability risk is S-VT variable valve timing system failure, with elevated incidence in vehicles subjected to infrequent oil changes. Mazda service bulletins document this as a common cause for check engine lights, while owner reports frequently cite rough idling or loss of power. Extended oil change intervals and use of incorrect oil viscosity make solenoid and actuator cleaning or replacement critical.
Analysis derived from Mazda technical bulletins (2005-2012) and owner-reported failure data (2010-2020). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about MAZDA L3.
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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)
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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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