The Mitsubishi 4J15 is a 1,499 cc, inline‑four naturally aspirated petrol engine produced between 2010 and 2023. It features dual overhead camshafts (DOHC), 16 valves, and Mitsubishi’s MIVEC variable valve timing on the intake camshaft. In standard form it delivered 78–80 kW (106–109 PS) and torque figures between 145–149 Nm, offering responsive urban performance with low fuel consumption.
Fitted to models such as the Mitsubishi Mirage, Space Star, and Attrage, the 4…
Production years 2010–2015 meet Euro 5 standards; 2016–2023 models meet Euro 6 depending on market (JAMA Type Approval #JAMA/EMS/4J15).
The Mitsubishi 4J15 is a 1,499 cc inline‑four naturally aspirated petrol engine engineered for subcompact models (2010–2023). It combines DOHC with MIVEC variable valve timing to deliver responsive low‑rpm performance and urban fuel efficiency. Designed to meet Euro 5 (early builds) and Euro 6 (later builds) standards, it balances light weight with everyday drivability.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,499 cc | |
Fuel type | Petrol (Unleaded) | |
Configuration | Inline‑4, DOHC, 16‑valve | |
Aspiration | Naturally aspirated | |
Bore × stroke | 75.0 mm × 84.8 mm | |
Power output | 78–80 kW (106–109 PS) @ 6,000 rpm | |
Torque | 145–149 Nm @ 4,000 rpm | |
Fuel system | Multi‑point fuel injection (MPFI) | |
Emissions standard | Euro 5 (2010–2015); Euro 6 (2016–2023) | |
Compression ratio | 10.5:1 | |
Cooling system | Water‑cooled | |
Turbocharger | None | |
Timing system | Chain‑driven DOHC | |
Oil type | API SN/ILSAC GF‑5, SAE 0W‑20 or 5W‑30 | |
Dry weight | 82 kg |
The Mitsubishi 4J15 was used across Mitsubishi's Global Small Car platform with transverse mounting. This engine received platform-specific adaptations—shortened exhaust manifolds in the Mirage and revised engine mounts in the Attrage—and from 2016 the facelifted Space Star adopted updated timing components, creating minor service part distinctions. All adaptations are documented in OEM technical bulletins.
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Field reports and technical service bulletins highlight component wear patterns under high-load operation. Adherence to manufacturer service intervals and approved fluid specifications is critical for long-term reliability.
Analysis derived from Mitsubishi technical bulletins (2013–2020) and EU type-approval failure statistics (2015–2023). 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 4J15 is generally reliable if maintained properly, but early models (2010–2015) had timing chain tensioner wear issues in urban use. Post-2016 revisions resolved this with improved oil flow. Regular oil changes with correct 0W-20 or 5W-30 oil and timely service greatly improve longevity and prevent common failures.
Key issues include timing chain tensioner wear (early builds), throttle body carbon buildup, valve cover gasket leaks, and coolant leaks from the thermostat housing. These are documented in Mitsubishi service bulletins SB‑13‑08‑021 and related TIS entries.
The 4J15 powered the Mitsubishi Mirage (2012–2023), Space Star (2012–2023), and Attrage (2013–2023). It was developed as a global small-engine solution for emerging and mature markets alike.
Limited tuning potential due to small displacement and naturally aspirated design. ECU remaps yield modest gains (+2–4 kW), but require careful calibration. Forced induction is not recommended without extensive internal modifications. Most owners prioritize fuel economy over power.
Excellent for city use. In a Mirage (2015), typical consumption is ~5.5 L/100km (city) and ~4.1 L/100km (highway), or about 58 mpg UK combined. Real-world mixed driving typically returns 52–62 mpg (UK) when maintained properly.
Yes. The 4J15 is an interference engine. If the timing chain fails or jumps, piston-to-valve contact can cause severe internal damage. However, the chain is designed for life-of-engine service if correct oil and intervals are maintained.
Mitsubishi specifies SAE 0W-20 or 5W-30 oil meeting API SN/ILSAC GF-5 (or ACEA C2/C3 for Euro 6 variants). Always use a quality low-SAPS synthetic and change every 10,000 km or 12 months to protect the timing system and minimize oil consumption.
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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