The Mitsubishi 6B33 is a 3,828 cc, V6 naturally aspirated petrol engine produced between 2007 and 2014. It features dual overhead camshafts (DOHC), 24 valves, and Mitsubishi’s MIVEC variable valve timing on the intake camshafts. In standard form it delivered 184–206 kW (250–280 PS) with torque figures between 343–366 Nm, optimized for smooth highway performance and refined towing capability.
Fitted to models such as the Pajero/Montero (V80/V90) and Delica D:5 (long —…
All production years (2007–2014) meet Euro 4 standards depending on market (JAMA Type Approval #JAMA/EMS/7341).
The Mitsubishi 6B33 is a 3,828 cc V6 naturally aspirated petrol engine engineered for full-size SUVs and premium MPVs (2007–2014). It combines DOHC 24-valve architecture with MIVEC variable valve timing to deliver smooth power delivery and strong low-end torque. Designed to meet Euro 4 emissions standards, it balances refinement with robust off-road capability.
| Parameter | Value | Source |
|---|---|---|
Displacement | 3,828 cc | |
Fuel type | Petrol (Unleaded, min. 95 RON) | |
Configuration | V6, DOHC, 24‑valve | |
Aspiration | Naturally aspirated | |
Bore × stroke | 95.0 mm × 90.0 mm | |
Power output | 184–206 kW (250–280 PS) @ 5,500–6,000 rpm | |
Torque | 343–366 Nm @ 3,500–4,500 rpm | |
Fuel system | Sequential multi-point fuel injection (SFI) | |
Emissions standard | Euro 4 (2007–2014) | |
Compression ratio | 10.5:1 | |
Cooling system | Water‑cooled | |
Turbocharger | None | |
Timing system | Chain-driven DOHC with MIVEC (intake only) | |
Oil type | Mitsubishi Motors Genuine Oil 5W‑30 (API SM/ILSAC GF-4) | |
Dry weight | 182 kg |
The Mitsubishi 6B33 was used across Mitsubishi's V80/D5L premium SUV platforms with longitudinal mounting and no external licensing. This engine received platform-specific adaptations-reinforced engine mounts in the Pajero and revised cooling ducts in the Delica D:5 LWB-and from 2011 the facelifted Pajero adopted updated piston ring packs, creating minor interchange limits. All adaptations are documented in OEM technical bulletins.
The 6B33's primary reliability risk is oil consumption in early builds (2007–2010), with elevated incidence in high-temperature or high-RPM usage. Mitsubishi internal data cited in TSB-ME-11-008 noted measurable oil use (>0.5 L/1,000 km) in a subset of pre-2011 engines exceeding 100,000 km, while JAMA field reports confirmed blue smoke complaints in fleet vehicles. Extended high-load operation and infrequent oil changes increase ring land wear, making oil grade and interval adherence critical.
Analysis derived from Mitsubishi technical bulletins (2011–2013) and JAMA failure statistics (2012–2016). Repair procedures should follow manufacturer guidelines.
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The 6B33 is generally reliable when maintained properly, though early models (2007–2010) had oil consumption issues. Post-2010 revisions resolved most concerns. Using correct 5W-30 oil and adhering to service intervals ensures longevity beyond 250,000 km.
Key issues include oil consumption (pre-2011), MIVEC actuator sludge, timing chain tensioner wear, and intake manifold vacuum leaks. All are documented in Mitsubishi service bulletins and often linked to oil quality or service neglect.
The 6B33 powered the Pajero/Montero (V80/V90, 2007–2014) and Delica D:5 Long Wheelbase (2007–2011) globally. It was not licensed to other manufacturers and is exclusive to Mitsubishi’s premium SUV lineup.
Modest gains are possible via ECU remap (+10–15 kW), leveraging the robust internals and MIVEC system. Forced induction is not recommended due to stock cooling and fuel system constraints. Focus on drivability rather than significant power increases.
Typical for a 3.8L V6 SUV. In a Pajero 3.8 V6, expect ~14.2 L/100km (city) and ~10.1 L/100km (highway), or 20–28 mpg UK combined. Real-world mixed driving typically yields 22–26 mpg UK with conservative driving.
Yes. The 6B33 is an interference engine. If the timing chain fails or jumps, piston-to-valve contact can cause catastrophic damage. Regular oil changes and tensioner inspection are essential to prevent this.
Mitsubishi specifies 5W-30 synthetic oil meeting API SM/ILSAC GF-4 and Mitsubishi Motors Genuine Oil standards. Always use this grade to ensure proper MIVEC and chain lubrication, especially in hot climates.
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