The Mazda L5 — VE is a 2,488 cc, inline‑four naturally aspirated petrol engine produced between 2006 and 2011. It features dual overhead camshafts (DOHC), 16 valves, and Mazda’s variable valve timing system (S — VT) on the intake camshaft. In standard applications, it delivered 120 kW (163 PS) and 226 Nm of torque, providing a balance of mid — range responsiveness and fuel efficiency.
Fitted primarily to the second — generation Mazda6 (GH platform) and the Mazda CX — 7 (non — tu…
Mazda
All production years (2006–2011) meet Euro 4 emissions standards .
The Mazda L5-VE is a 2,488 cc inline‑four naturally aspirated petrol engine engineered for mid‑size sedans and crossovers (2006-2011). It combines DOHC architecture with intake variable valve timing (S-VT) to deliver smooth power delivery and adequate low-to-mid range torque. Designed to meet Euro 4 emissions standards, it prioritizes drivability and reliability over peak performance.
| Parameter | Value | Source |
|---|---|---|
Displacement | 2,488 cc | |
Fuel type | Petrol | |
Configuration | Inline‑4, DOHC, 16‑valve | |
Aspiration | Naturally Aspirated | |
Bore × stroke | 87.5 mm × 103.4 mm | |
Power output | 120 kW (163 PS) @ 6,000 rpm | |
Torque | 226 Nm @ 4,000 rpm | |
Fuel system | Sequential Multi-Point Fuel Injection (SFI) | |
Emissions standard | Euro 4 | |
Compression ratio | 9.7:1 | |
Cooling system | Water‑cooled | |
Turbocharger | None | |
Timing system | Chain-driven (maintenance-free design) | |
Oil type | Refer to vehicle handbook / manufacturer specification | |
Dry weight | 148 kg |
The Mazda L5-VE was used across Mazda's GH and ER platforms with transverse mounting and no external licensing. This engine received platform-specific adaptations-reinforced engine mounts in the CX-7 for SUV duty-and no significant facelift revisions occurred during its production, ensuring broad parts interchangeability. All adaptations are documented in OEM technical bulletins.
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The L5-VE's primary reliability consideration is potential oil consumption in higher-mileage units, with elevated incidence in vehicles subjected to frequent short trips. Mazda SIB 01-009/10 documents this phenomenon, while owner reports suggest it is manageable with proper maintenance. Extended oil change intervals and use of incorrect viscosity make adherence to OEM oil specifications critical.
Analysis derived from Mazda technical bulletins (2006-2011) and aggregated owner workshop data (2010-2023). Repair procedures should follow manufacturer guidelines.
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The L5-VE is generally considered a robust and reliable engine. Its timing chain design eliminates the need for scheduled belt replacements. The main long-term concern is potential oil consumption in high-mileage examples, which can be mitigated with strict adherence to oil change intervals and using the correct 5W-30 specification. With proper maintenance, these engines can easily exceed 200,000 km.
The most frequently reported issues are excessive oil consumption (addressed in SIB 01-009/10), failure of the intake VVT solenoid (causing check engine lights), and coolant leaks from aging plastic components like the reservoir or thermostat housing. Engine mount wear is also common as the vehicle ages, leading to increased vibration.
The L5-VE 2.5L engine was used in the second-generation Mazda6 (GH chassis, 2007-2011) and the non-turbocharged versions of the first-generation Mazda CX-7 (ER chassis, 2006-2011). It was not used in the Mazda3 or any other Mazda models during this period.
The L5-VE has limited tuning potential due to its naturally aspirated design and modest compression ratio. Basic modifications like a cold air intake and cat-back exhaust might yield minor gains of 5-10 kW. Significant power increases would require forced induction (turbo/supercharger), which is complex and expensive, involving custom fabrication and ECU remapping.
Fuel economy is moderate for its size. In a Mazda6 sedan, expect around 10.5 L/100km in city driving and 7.0 L/100km on the highway, resulting in a combined figure of approximately 8.5 L/100km (or roughly 33 mpg UK combined). The heavier CX-7 will return slightly higher consumption figures.
Yes. The Mazda L5-VE is an interference engine. This means that if the timing chain were to fail or jump significantly, the pistons would collide with the open valves, causing severe internal engine damage. Fortunately, the chain is very durable and rarely fails if basic oil maintenance is performed.
Mazda specifies SAE 5W-30 engine oil meeting API SM/ILSAC GF-4 standards or higher (e.g., SN, SP). Using a high-quality full synthetic oil is strongly recommended, especially to help mitigate potential oil consumption issues. The oil should be changed every 10,000 km or 12 months, whichever comes first.
Comprehensive technical documentation and regulatory references
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Regulatory Stability
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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