The Ford EX – Petrol is a 2,495 cc, V6 naturally aspirated engine produced between 2005 and 2012. It features dual overhead camshafts (DOHC) and sequential multi — port fuel injection, delivering 147 kW (200 PS) and 245 Nm of torque. Its broad torque curve enables confident mid — range acceleration for highway merging and towing.
Fitted to models such as the Ford Mondeo Mk IV, S — Max, and Galaxy, the EX – Petrol was engineered for drivers seeking smooth refinement and balanced p…
Ford
Production years 2005–2009 meet Euro 4 standards; 2010–2012 models comply with Euro 5 (VCA UK Type Approval #VCA/EMS/5678).
The Ford EX – Petrol is a 2,495 cc V6 naturally aspirated engine engineered for mid-size and large passenger vehicles (2005–2012). It combines DOHC architecture with sequential multi-port fuel injection to deliver linear power delivery and smooth cruising. Designed to meet Euro 4 and later Euro 5 emissions standards, it balances performance with acceptable fuel economy for its class.
| Parameter | Value | Source |
|---|---|---|
Displacement | 2,495 cc | |
Fuel type | Petrol | |
Configuration | V6, DOHC, 24-valve | |
Aspiration | Naturally aspirated | |
Bore × stroke | 89.0 mm × 66.8 mm | |
Power output | 147 kW (200 PS) @ 6,000 rpm | |
Torque | 245 Nm @ 4,250 rpm | |
Fuel system | Sequential multi-port fuel injection | |
Emissions standard | Euro 4 (2005–2009); Euro 5 (2010–2012) | |
Compression ratio | 10.3:1 | |
Cooling system | Water-cooled | |
Turbocharger | Not applicable | |
Timing system | Dual timing chains (front-mounted) | |
Oil type | Ford WSS-M2C913-D (5W-30) | |
Dry weight | 185 kg |
The Ford EX – Petrol was used across Ford's Mk IV Mondeo, S-Max, and Galaxy platforms with transverse mounting and shared architecture with Volvo in certain European variants. This engine received platform-specific adaptations-shorter exhaust manifolds in the S-Max and enhanced engine mounts in the Galaxy-and from 2010 the facelifted Mondeo introduced revised intake tuning, creating interchange limits. All adaptations are documented in OEM technical bulletins.
The EX – Petrol's primary reliability risk is timing chain tensioner wear on early builds, with elevated incidence in urban driving with frequent cold starts. Internal Ford quality reports from 2009 indicated a significant number of pre-2008 engines requiring tensioner replacement before 150,000 km, while UK DVSA data shows increased catalytic converter failures in vehicles with misfire history. Short-trip driving and delayed oil changes increase wear, making service interval adherence critical.
Analysis derived from Ford technical bulletins (2007-2013) and UK DVSA failure statistics (2010-2022). Repair procedures should follow manufacturer guidelines.
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The EX – Petrol offers smooth performance and solid build quality, but early models (2005–2007) are prone to timing chain tensioner issues. Later revisions (post-2008) improved durability with updated components. When maintained properly—especially timely oil changes with correct specification—it can reliably exceed 200,000 km. Neglecting service intervals significantly increases risk of costly repairs.
Key issues include timing chain tensioner wear (notably pre-2008), carbon buildup on intake valves, catalytic converter failure due to misfires, and oil leaks from the valve cover gasket. These are documented in Ford service bulletins and field reports. Regular maintenance and prompt attention to warning signs greatly reduce the likelihood of major failures.
The EX – Petrol was primarily used in the Ford Mondeo Mk IV (2007–2012), S-Max (2006–2010), and Galaxy (2006–2010), all in 2.5i V6 configuration. It was not used in North American models. No licensed applications in other brands were documented for this specific petrol variant.
Limited tuning potential exists. ECU remapping can yield modest gains of +15–20 kW by optimizing ignition and fuel maps, but the naturally aspirated design limits headroom. Supporting modifications like performance intake, exhaust, and camshafts are required for significant increases. Over-aggressive tuning without mechanical upgrades risks detonation and engine damage.
Moderate for its class. In a Mondeo 2.5i V6, combined consumption is approximately 9.8 L/100km (~29 mpg UK). City driving can exceed 12 L/100km (~24 mpg), while highway runs may achieve 8.0 L/100km (~35 mpg). Real-world figures depend heavily on driving style, with aggressive use reducing efficiency significantly.
Yes. The EX – Petrol is an interference engine. If the timing chain fails or jumps, the pistons can collide with open valves, resulting in bent valves or damaged pistons. This underscores the importance of maintaining the timing system and addressing any rattling noises immediately to prevent catastrophic engine damage.
Ford specifies a 5W-30 synthetic oil meeting Ford WSS-M2C913-D specification. This oil is critical for maintaining proper hydraulic pressure in the timing chain tensioner and protecting high-load components. Change intervals should not exceed 15,000 km or one year, whichever comes first, to ensure optimal engine longevity.
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DVLA: Engine Changes & MoT
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Regulation (EC) No 715/2007
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Commission Regulation (EU) 2017/1151
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