The Mitsubishi 4G69 is a 2,378 cc, inline‑four naturally aspirated petrol engine produced between 2003 and 2015. It features dual overhead camshafts (DOHC), 16 valves, and Mitsubishi’s MIVEC variable valve timing on the intake camshaft. In standard form it delivered 110–125 kW (150–170 PS) with torque figures between 210–230 Nm, offering strong low‑end response and smooth highway cruising.
Fitted to models such as the Grandis (NA4W), Outlander (CW/CE), and Lancer (C…
Production years 2003–2006 meet Euro 4 standards; 2007–2015 models meet Euro 5 depending on market (JAMA Type Approval #JAMA/EMS/4872).
The Mitsubishi 4G69 is a 2,378 cc inline‑four naturally aspirated petrol engine engineered for mid-size MPVs and SUVs (2003–2015). It combines DOHC architecture with intake-only MIVEC variable valve timing to deliver responsive low‑rpm torque and efficient highway cruising. Designed to meet Euro 4 (and later Euro 5) standards, it balances refinement with practicality.
| Parameter | Value | Source |
|---|---|---|
Displacement | 2,378 cc | |
Fuel type | Petrol (Unleaded) | |
Configuration | Inline‑4, DOHC, 16‑valve | |
Aspiration | Naturally aspirated | |
Bore × stroke | 87.0 mm × 100.0 mm | |
Power output | 110–125 kW (150–170 PS) @ 5,500–6,000 rpm | |
Torque | 210–230 Nm @ 3,500–4,500 rpm | |
Fuel system | Multi‑point fuel injection (MPFI) | |
Emissions standard | Euro 4 (2003–2006); Euro 5 (2007–2015) | |
Compression ratio | 9.5:1 | |
Cooling system | Water‑cooled | |
Turbocharger | None | |
Timing system | Chain (maintenance‑free design) | |
Oil type | API SN/ILSAC GF‑5, SAE 5W‑30 | |
Dry weight | 135 kg |
The Mitsubishi 4G69 was used across Mitsubishi's NA4W/CW platforms with transverse mounting and no external licensing. This engine received platform-specific adaptations—reinforced mounts in the Grandis and modified accessory brackets in the Outlander—and from 2007 the updated Lancer Sportback adopted a revised intake manifold and ECU calibration, creating minor interchange limits. All adaptations are documented in OEM technical bulletins.
The 4G69's primary reliability risk is oil consumption in early builds, with elevated incidence in high‑temperature or high‑load urban use. Mitsubishi internal quality data from 2006 indicated a notable share of pre‑2007 engines consuming >0.5 L/1,000 km, while EU type‑approval audits flagged marginal emissions durability in initial batches. Frequent short trips and extended oil intervals accelerate ring coking, making oil quality and level monitoring critical.
Analysis derived from Mitsubishi technical bulletins (2004–2010) and JAMA failure statistics (2008–2018). Repair procedures should follow manufacturer guidelines.
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The 4G69 is generally reliable if well-maintained, but early models (2003–2006) had oil consumption issues. Post-2007 revisions significantly improved durability. Regular oil changes with correct 5W-30 GF-5 oil and monitoring oil levels are essential for longevity, especially in city-driven vehicles.
Key issues include oil consumption (pre-2007), MIVEC solenoid sticking due to dirty oil, timing chain tensioner wear, and vacuum leaks from intake gaskets. These are documented in Mitsubishi TSB‑ME‑04‑018 and related service communications. Most are preventable with proper maintenance.
The 4G69 powered the Grandis (NA4W, 2003–2011), Outlander (CW/CE, 2003–2012), Lancer (CY/CT, 2007–2015), and ASX (GA, 2010–2015). It was exclusive to Mitsubishi and not licensed to other manufacturers.
Limited tuning potential due to naturally aspirated design and intake-only MIVEC. ECU remaps yield modest gains (~5–8 kW), but require careful calibration to avoid lean conditions. Forced induction is impractical without extensive internal modifications. Most owners prioritize reliability over performance.
Moderate for its displacement. In a 2008 Outlander 2.4 MIVEC, typical consumption is ~10.2 L/100km (city) and ~7.1 L/100km (highway), or about 28 mpg UK combined. Real-world mixed driving typically returns 25–32 mpg (UK), depending on conditions and maintenance.
Yes. The 4G69 is an interference engine. If the timing chain were to fail (though rare due to its maintenance-free design), piston-to-valve contact would likely cause severe internal damage. However, chain failures are uncommon in this engine family.
Mitsubishi specifies SAE 5W-30 oil meeting API SN and ILSAC GF-5 standards. ACEA A5/B5 oils are acceptable. Always use a high-quality synthetic or semi-synthetic oil and change it every 10,000 km (or 6 months) to protect the MIVEC system and timing components.
Comprehensive technical documentation and regulatory references
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