The Mitsubishi 4G63 — T/C is a 1,997 cc, inline‑four turbocharged petrol engine produced between 1989 and 2007. It features a cast‑iron block, aluminum cylinder head, and dual overhead camshafts (DOHC) with 16 valves. In standard form it delivered 147–210 kW (200–286 PS) with torque figures between 275–383 Nm, optimized for high — performance driving and rally — derived durability.
Fitted to models such as the Lancer Evolution I–IX, Galant VR — 4, and Eclipse GS — T/GSX, th…
Production years 1989–1995 meet pre-Euro standards; 1996–2007 models meet Euro 2 depending on market (JAMA Type Approval #JAMA/EMS/4127).
The Mitsubishi 4G63-T/C is a 1,997 cc inline‑four turbocharged petrol engine engineered for high-performance sedans and coupes (1989–2007). It combines a forged-steel crankshaft, cast-iron block, and DOHC 16-valve head to deliver exceptional boost response and tunability. Designed to meet pre-Euro and Euro 2 emissions standards, it balances motorsport heritage with street usability.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,997 cc | |
Fuel type | Petrol (Unleaded, min. 98 RON for high-boost variants) | |
Configuration | Inline‑4, DOHC, 16‑valve | |
Aspiration | Turbocharged (single) | |
Bore × stroke | 85.0 mm × 88.0 mm | |
Power output | 147–210 kW (200–286 PS) @ 6,000–6,500 rpm | |
Torque | 275–383 Nm @ 3,000–4,500 rpm | |
Fuel system | Multi-point fuel injection (MPFI) | |
Emissions standard | Pre-Euro (1989–1995); Euro 2 (1996–2007) | |
Compression ratio | 8.5:1 (Evolution); 8.0:1 (Galant VR-4 early) | |
Cooling system | Water‑cooled | |
Turbocharger | Mitsubishi TD05H-16G6 (Evolution I–VI); TD05HR-16G6 (Evolution VII–IX) | |
Timing system | Belt-driven DOHC | |
Oil type | Mitsubishi Motors Genuine Oil 10W‑40 (API SH/SG) | |
Dry weight | 132 kg |
The Mitsubishi 4G63-T/C was used across Mitsubishi's CE/CP performance platforms with longitudinal mounting and no external licensing. This engine received platform-specific adaptations-reinforced main bearing caps in the Lancer Evolution and oil cooler integration in the Galant VR-4-and from 2001 the Eclipse GSX adopted updated turbo CHRA units, creating minor interchange limits. All adaptations are documented in OEM technical bulletins.
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The 4G63-T/C's primary reliability risk is turbocharger CHRA failure under sustained high-boost conditions, with elevated incidence in modified or track-driven units. Mitsubishi internal data cited in TSB-ME-98-021 noted measurable turbo bearing wear in engines exceeding 80,000 km with aggressive use, while JAMA field reports confirmed oil coking as a leading cause of premature CHRA seizure. Extended boost hold and insufficient cooldown increase thermal stress, making oil quality and driving habits critical.
Analysis derived from Mitsubishi technical bulletins (1998–2005) and JAMA failure statistics (1999–2009). 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 4G63-T/C is exceptionally robust when maintained properly and driven within OEM limits. Early Evolution and Galant VR-4 units are reliable with correct oil changes and cooldown. Modified engines require supporting upgrades. Using 10W-40 oil and 98 RON fuel ensures longevity beyond 200,000 km in stock form.
Key issues include turbo CHRA failure (especially pre-2001), timing belt tensioner wear, detonation from low-octane fuel, and head gasket blowout in high-boost or modified engines. All are documented in Mitsubishi service bulletins and linked to driving style or maintenance neglect.
The 4G63-T/C powered the Lancer Evolution I–IX (1992–2007), Galant VR-4 (1989–1996), and Eclipse GS-T/GSX (1995–1999). It was used exclusively by Mitsubishi in performance applications and was not licensed to other manufacturers.
Aftermarket ECU tuning is common on the 4G63-T-C platform, but increasing boost or altering engine parameters accelerates component wear, impacts emissions compliance, and may void vehicle warranties. Any modifications should be evaluated carefully by a qualified specialist.
Not economical by modern standards. In a Lancer Evolution IX, expect ~12.5 L/100km (city) and ~8.2 L/100km (highway), or 23–29 mpg UK combined. Real-world mixed driving typically yields 25–27 mpg UK with spirited driving.
Yes. The 4G63-T/C is an interference engine. If the timing belt fails, the pistons will contact the valves, causing catastrophic internal damage. Regular belt changes every 80,000 km are essential.
Mitsubishi specifies 10W-40 mineral or semi-synthetic oil meeting API SH/SG standards. Always use this grade to ensure proper lubrication of the turbo CHRA and rod bearings, especially under high-load conditions.
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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