The Ford G8DE is a 2,967 cc, V6 naturally aspirated petrol engine produced between 2005 and 2010. Part of the Ford Duratec family, it was engineered for smooth power delivery and refinement in mid-size and large vehicles. Featuring dual overhead camshafts (DOHC) and 24-valve configuration, it delivered 148 kW (201 PS) and 278 Nm of torque, utilising variable cam timing (Ti-VCT) to enhance both low-end responsiveness and high-RPM efficiency.
Fitted primarily to the Ford Mondeo (Mk4) and S-MAX, the G8DE was designed for drivers seeking a balance of performance and comfort. Its V6 layout provided inherent smoothness and a refined exhaust note while meeting Euro 4 emissions standards. Emissions control was achieved through port fuel injection, a three-way catalytic converter (TWC), and closed-loop lambda control, ensuring compliance across European markets during its production run.
One documented concern is premature wear of the timing chain tensioner, which in rare cases led to chain slippage and valve train damage. This issue, referenced in Ford Service Action 08B05, is attributed to early tensioner design limitations under prolonged thermal cycling. From 2008, revised tensioner assemblies with improved hydraulic stability were introduced to enhance chain retention.
Production years 2005–2010 meet Euro 4 standards (VCA UK Type Approval #VCA/EMS/9123).
The Ford G8DE is a 2,967 cc V6 petrol engine engineered for mid-to-large passenger vehicles (2005–2010). It combines Ti-VCT variable cam timing with port fuel injection to deliver smooth throttle response and consistent fuel economy. Designed to meet Euro 4 emissions standards, it balances refinement with long-term serviceability for higher-mileage applications.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 2,967 cc | |
| Fuel type | Petrol | |
| Configuration | V6, DOHC, 24-valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 89.0 mm × 80.0 mm | |
| Power output | 148 kW (201 PS) @ 6,250 rpm | |
| Torque | 278 Nm @ 4,250 rpm | |
| Fuel system | Port fuel injection (PFI) | |
| Emissions standard | Euro 4 | |
| Compression ratio | 10.7:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | Not applicable | |
| Timing system | Timing chain (front-mounted, single-row) | |
| Oil type | Ford WSS-M2C913-C (5W-30) | |
| Dry weight | 185 kg |
The V6 configuration provides smooth power delivery but requires consistent oil pressure to maintain cam phaser function; extended oil intervals can lead to sluggish response and timing errors. Ford WSS-M2C913-C (5W-30) specification oil is essential for maintaining hydraulic actuator performance and reducing chain wear. Use of non-approved oils increases risk of tensioner degradation, especially during cold starts. The port fuel injection system is less prone to carbon buildup than direct injection but still benefits from periodic fuel system cleaning. Post-2008 revisions improved oil flow; pre-2008 engines should be monitored for tensioner wear via oil analysis or compression testing.
Oil Specs: Requires Ford WSS-M2C913-C (5W-30) specification (Ford SIB 08B05). Supersedes ACEA A5/B5.
Emissions: Euro 4 certification applies to all G8DE production years (VCA Type Approval #VCA/EMS/9123).
Power Ratings: Measured under SAE J1349 standards. Output consistent across fuel grades (RON 95 minimum).
Ford Technical Information System (TIS): Docs D30430, D26103, SIB 08B05
VCA Type Approval Database (VCA/EMS/9123)
SAE International: J1349 Engine Power Certification Standards
The Ford G8DE was used across Ford's CD3 platform with transverse mounting and shared architecture with Volvo pre-2010 derivatives. This engine received platform-specific adaptations-shorter intake manifolds in the Mondeo and revised exhaust routing in the S-MAX-and from 2008 received internal timing chain upgrades to address early tensioner wear, creating interchange limits. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped horizontally on the front face of the cylinder block, near the starter motor (Ford TIS D30430). The 8th VIN digit indicates engine type ('L' for 3.0L DOHC). Pre-2008 units have silver valve covers with black coil packs; post-2008 models use black valve covers. Critical differentiation from four-cylinder variants: G8DE uses a V6 layout with wider engine bay footprint and unique exhaust manifold geometry. Service parts require production date verification—timing chain kits for pre-2008 engines are not interchangeable with later units due to revised tensioner design (Ford SIB 08B05).
The G8DE's primary reliability risk is timing chain tensioner degradation on early builds, with elevated incidence in vehicles used for short journeys. Internal Ford quality reports from 2009 indicated a small but notable proportion of pre-2008 engines showing tensioner spring failure before 120,000 km, while UK DVSA MOT data shows increased misfire-related failures linked to valve timing drift. Frequent cold starts and delayed chain service increase wear, making adherence to service intervals critical.
Analysis derived from Ford technical bulletins (2006-2010) and UK DVSA failure statistics (2011-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about FORD G8DE.
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 FORD 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.
FORD 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 officialFORD 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.
