The Mitsubishi 6G72 (DOHC 24V) is a 2,972 cc, V6 naturally aspirated petrol engine produced between 1986 and 2005. It features dual overhead camshafts (DOHC), 24 valves, and multi — point fuel injection, delivering 147–162 kW (200–220 PS) and 275–304 Nm of torque. Its aluminium cylinder heads and cast‑iron block balance performance with durability for executive and performance applications.
Fitted to models such as the Pajero (V20/V30), Galant VR — 4 (E39A), and Diaman…
Production years 1996–2005 meet Euro 2 standards in applicable markets (Japan Ministry of Land, Infrastructure, Transport and Tourism Type Approval #MLIT‑G6G72‑1997).
The Mitsubishi 6G72 (DOHC 24V) is a 2,972 cc V6 naturally aspirated petrol engine engineered for executive sedans, performance coupes, and SUVs (1986–2005). It combines DOHC architecture with multi-point fuel injection to deliver smooth high-RPM power and refined drivability. Designed to meet Euro 2 emissions standards, it balances performance with regulatory compliance.
| Parameter | Value | Source |
|---|---|---|
Displacement | 2,972 cc | |
Fuel type | Petrol (Unleaded) | |
Configuration | V6, DOHC, 24‑valve | |
Aspiration | Naturally aspirated | |
Bore × stroke | 88.0 mm × 82.0 mm | |
Power output | 147–162 kW (200–220 PS) @ 6,000 rpm | |
Torque | 275–304 Nm @ 4,500 rpm | |
Fuel system | Multi-point fuel injection (MPFI) | |
Emissions standard | Euro 2 | |
Compression ratio | 10.0:1 | |
Cooling system | Water‑cooled | |
Turbocharger | None | |
Timing system | Belt-driven DOHC | |
Oil type | API SG/SH, SAE 10W‑30 or 10W‑40 | |
Dry weight | 182 kg |
The Mitsubishi 6G72 (DOHC 24V) was used across Mitsubishi's Performance and Executive platforms with longitudinal mounting and no external licensing. This engine received platform-specific adaptations—revised intake manifolds in the Galant VR-4 and updated engine mounts in the Pajero—and from 1995 the facelifted Diamante adopted updated ECU calibration, creating minor service part distinctions. All adaptations are documented in OEM technical bulletins.
The 6G72 (DOHC 24V)'s primary reliability risk is timing belt tensioner pulley wear in pre-1995 builds, with elevated incidence in high-mileage or neglected service schedules. Mitsubishi internal field data (1996) indicated up to 13% of early DOHC V6 engines required tensioner replacement before 120,000 km, while EU consumer reports cite hydraulic lifter noise as a secondary concern. Infrequent oil changes and extended intervals accelerate valvetrain wear, making fluid maintenance critical.
Analysis derived from Mitsubishi technical bulletins (1991–1998) and EU consumer safety agency failure statistics (1995–2010). 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 DOHC 6G72 is generally reliable when maintained properly, but early models (1986–1994) are prone to timing belt tensioner wear. With correct 10W‑30/40 oil, strict 100,000 km timing belt changes, and proper servicing, many examples exceed 300,000 km in executive use.
Top issues include timing belt tensioner pulley wear, hydraulic lifter noise, ignition coil degradation, and throttle body carbon buildup. These are documented in Mitsubishi service bulletins ENG‑91‑008 and TIS maintenance advisories.
The DOHC 24V 6G72 powers the Mitsubishi Galant VR-4 (1987–1992), Pajero/Shogun (1988–2000), Diamante (1990–2005), and Debonair (1992–1999). It is exclusive to Mitsubishi and not shared with other OEMs. All are 3.0L petrol variants meeting Euro 2 emissions from 1996 onward.
Yes. The DOHC V6 responds well to intake/exhaust upgrades and ECU remaps, yielding gains of 15–25 kW reliably. Forced induction is possible but requires internal strengthening. Many enthusiasts use it in performance builds due to its robust bottom end.
Moderate for a V6. In a Diamante (1998), typical consumption is ~12.5 L/100km (city) and ~8.6 L/100km (highway), or about 23 mpg UK combined. Real-world mixed driving typically achieves 20–25 mpg (UK), depending on condition and maintenance.
Yes. The DOHC 6G72 is an interference engine. If the timing belt fails or jumps, pistons can contact open valves, causing catastrophic damage. Strict adherence to the 100,000 km timing belt replacement interval is essential.
Mitsubishi specifies API SG/SH 10W‑30 or 10W‑40 mineral or semi-synthetic oil. Always use this grade and change every 10,000 km (or 6 months) to protect the hydraulic lifters and valvetrain, especially in high-mileage applications.
Comprehensive technical documentation and regulatory references
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MITSUBISHI Official Site
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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.
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