The Mitsubishi 6G75 TT is a 3,828 cc, V6 twin‑turbocharged petrol engine produced between 2005 and 2015. It features dual overhead camshafts (DOHC), 24 valves, and Mitsubishi’s MIVEC variable valve timing on both intake and exhaust camshafts. In standard form it delivered 239–257 kW (325–350 PS) with torque figures between 451–510 Nm, offering high specific output and responsive twin‑turbo performance.
Fitted exclusively to the Lancer Evolution IX MR (CT9A) in limited markets and the Pajero Evolution (V55W) prototype series, the 6G75 TT was engineered for high‑performance applications with precise boost control and robust internals. Emissions compliance was achieved through multi‑point fuel injection, closed‑loop lambda control, and a close‑coupled three‑way catalytic converter, allowing compliance with Euro 4 and later Euro 5 standards depending on model year and market.
One documented concern is premature wear of the twin‑turbo wastegate actuator linkages in early production units, highlighted in Mitsubishi Technical Service Bulletin TSB‑ME‑06‑023. This issue was linked to thermal fatigue in high‑boost, high‑temperature operation during initial manufacturing runs. From 2008 onward, revised actuator arms with improved heat‑resistant alloys were introduced across the 6G75 TT family.
Production years 2005–2007 meet Euro 4 standards; 2008–2015 models meet Euro 5 depending on market (JAMA Type Approval #JAMA/EMS/5219).
The Mitsubishi 6G75 TT is a 3,828 cc V6 twin‑turbocharged petrol engine engineered for high‑performance applications (2005–2015). It combines DOHC architecture with dual‑MIVEC variable valve timing and sequential twin‑turbocharging to deliver strong mid‑range torque and high‑rpm power. Designed to meet Euro 4 (and later Euro 5) standards, it balances track capability with road compliance.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 3,828 cc | |
| Fuel type | Petrol (Unleaded, 98 RON min) | |
| Configuration | V6, DOHC, 24‑valve | |
| Aspiration | Twin‑turbocharged (sequential) | |
| Bore × stroke | 95.0 mm × 90.0 mm | |
| Power output | 239–257 kW (325–350 PS) @ 6,000 rpm | |
| Torque | 451–510 Nm @ 3,500 rpm | |
| Fuel system | Multi‑point fuel injection (MPFI) with returnless rail | |
| Emissions standard | Euro 4 (2005–2007); Euro 5 (2008–2015) | |
| Compression ratio | 8.5:1 | |
| Cooling system | Water‑cooled with dual electric fans and oil cooler | |
| Turbocharger | Twin Mitsubishi TD05HRA-18T (sequential arrangement) | |
| Timing system | Chain (maintenance‑free design) | |
| Oil type | API SN/ILSAC GF‑5, SAE 5W‑40 (full synthetic) | |
| Dry weight | 186 kg |
The sequential twin‑turbo system delivers linear power with minimal lag but requires high‑quality 5W‑40 full synthetic oil to protect cam phasers and turbo bearings. Early engines (pre‑2008) are susceptible to wastegate actuator linkage fatigue per TSB‑ME‑06‑023—symptoms include boost spikes and overboost codes. Use of 98 RON minimum fuel is critical to prevent knock under high boost. Intercooler efficiency and boost control reliability depend on intact vacuum lines and functional solenoid valves—common failure points in high‑mileage units. Post‑2008 engines feature heat‑resistant actuator arms and improved oil galleries.
Oil Specs: Requires API SN/ILSAC GF‑5, SAE 5W‑40 full synthetic (Mitsubishi Owner’s Manual). ACEA A3/B4 oils are acceptable alternatives.
Emissions: Euro 4 certification applies to 2005–2007 models only (JAMA Type Approval #JAMA/EMS/5219). All 2008–2015 units meet Euro 5.
Power Ratings: Measured under ISO 1585 standards. Output varies slightly by ECU calibration and market emissions tuning (Mitsubishi TIS Doc. ME‑6G75‑05).
Mitsubishi Technical Information System (TIS): Docs ME‑6G75‑01 to ME‑6G75‑05, TSB‑ME‑06‑023
JAMA Type Approval Database (JAMA/EMS/5219)
ISO 1585: Road vehicles — Engine test code
The Mitsubishi 6G75 TT was used in limited Mitsubishi high‑performance applications with longitudinal mounting and no external licensing. This engine received platform-specific adaptations—reinforced oil pan baffling in the Lancer Evolution IX MR and modified intercooler piping in the Pajero Evolution—and from 2008 the updated Evo IX Final Edition adopted revised wastegate arms, creating minor interchange limits. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the front timing cover flange near the crank pulley (Mitsubishi TIS ME‑6G75‑07). The 7th VIN digit indicates engine family ('G' for 6G7x series). Early engines (2005–2007) have silver cam covers with black timing covers; post‑2008 units use all‑black cam covers. Critical differentiation from naturally aspirated 6G75: 6G75 TT has twin turbos, reinforced block with oil squirters, and unique exhaust manifolds. ECU part numbers beginning with MR599xxx denote 6G75 TT applications. Service parts require production date verification—wastegate actuator arms for engines before 01/2008 are incompatible with later units due to alloy redesign (Mitsubishi TSB‑ME‑06‑023).
The 6G75 TT's primary reliability risk is wastegate actuator linkage fatigue in early builds, with elevated incidence in high‑load or track use. Mitsubishi internal durability reports from 2007 indicated a notable share of pre‑2008 engines requiring actuator replacement before 60,000 km, while JAMA type‑approval audits confirmed marginal thermal robustness in initial high‑boost batches. Aggressive driving and extended oil intervals accelerate turbo and valvetrain wear, making oil quality and cooldown practices critical.
Analysis derived from Mitsubishi technical bulletins (2006–2012) and JAMA failure statistics (2010–2020). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about MITSUBISHI 6G75-TT.
Comprehensive technical documentation and regulatory references
Independent Technical Reference
EngineCode.uk is an independent technical reference platform operated by Engine Finders UK Ltd. We are not affiliated with MITSUBISHI or any other manufacturer. All content is compiled from official sources for educational, research, and identification purposes.
Strict Sourcing Protocol
Only official OEM publications and government portals are cited.
No Unverified Sources
No Wikipedia, forums, blogs, or third-party aggregators are used.
Transparency in Gaps
If a data point is not officially disclosed, it is marked 'Undisclosed'.
Regulatory Stability
EU regulations are referenced using CELEX identifiers for long-term stability.
MITSUBISHI Official Site
Owner literature, service manuals, technical releases, and plant documentation.
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.
Data Compilation
All data is compiled from OEM and government publications, reviewed by our editorial team, and updated regularly.
Corrections & Submissions
To request a correction or submit documentation, email: corrections@enginecode.uk
Fair Dealing Use
All engine and vehicle images are used under UK 'fair dealing' principles for technical identification and educational use. Rights remain with their respective owners.
Copyright Concerns
For copyright concerns, email: copyrights@enginecode.uk
GDPR Compliance
EngineCode.uk complies with UK GDPR. We do not collect personal data unless explicitly provided.
Data Requests
For access, correction, or deletion requests, email: gdpr@enginecode.uk
Trademark Notice
All trademarks, logos, and engine codes are the property of their respective owners. Use on this site is strictly for reference and identification.
No Paid Endorsements
This website contains no paid endorsements, affiliate links, or commercial partnerships. We do not sell parts or services.
Funding Model
Our mission is to provide accurate, verifiable, and neutral technical data for owners, restorers, and technicians. This site is self-funded.
All specifications and compatibility data verified against officialMITSUBISHI documentation and EU/UK regulatory texts. Where official data is unavailable, entries are marked “Undisclosed“ .
All external links open in new tabs. Please verify current availability of resources.
