The Ford ANU is a 2,495 cc, inline — five petrol engine produced between 2004 and 2011 as part of the Ford Duratec family. It features naturally aspirated design, sequential multi — point fuel injection, and dual overhead camshafts (DOHC), delivering smooth power delivery and refined operation. Its unique five — cylinder layout provides inherent balance and a distinctive exhaust note.
Fitted to models such as the CD35 Mondeo, D346 S — Max, and C326 Galaxy, the ANU engine was…
All production years (2004–2011) meet Euro 4 emissions standards (VCA UK Type Approval #VCA/EMS/4567).
The Ford ANU is a 2,495 cc inline-five naturally aspirated petrol engine engineered for mid-size and large platforms (2004–2011). It combines sequential multi-point fuel injection with DOHC valvetrain to deliver linear power delivery and smooth refinement. Designed to meet Euro 4 standards, it balances drivability with acceptable fuel consumption for its class.
| Parameter | Value | Source |
|---|---|---|
Displacement | 2,495 cc | |
Fuel type | Petrol | |
Configuration | Inline-5, DOHC, 20-valve | |
Aspiration | Naturally aspirated | |
Bore × stroke | 84.8 mm × 88.2 mm | |
Power output | 120–125 kW (163–170 PS) | |
Torque | 225–235 Nm @ 4,000 rpm | |
Fuel system | Siemens Simos 7.2 sequential multi-point injection | |
Emissions standard | Euro 4 | |
Compression ratio | 10.3:1 | |
Cooling system | Water-cooled | |
Turbocharger | Not applicable | |
Timing system | Chain (front-mounted; wear-prone under poor maintenance) | |
Oil type | Ford WSS-M2C913-A (5W-30) | |
Dry weight | 178 kg |
The Ford ANU was used across Ford's CDxx/D3xx platforms with transverse mounting and shared design elements with Volvo for global scalability. This engine received platform-specific adaptations—longer intake manifolds in the S-Max and revised cooling in the Galaxy—and from 2008 the facelifted Mondeo adopted the updated camshaft profile, creating interchange limits. Partnerships enabled Volvo's 3.2L inline-six to share core valvetrain and injection technology. All adaptations are documented in OEM technical bulletins.
The ANU's primary reliability risk is camshaft and lifter wear on early builds, with elevated incidence in stop-start urban use. Internal Ford quality reports from 2009 noted a significant share of pre-2008 engines requiring valvetrain repair before 160,000 km, while UK DVSA records link a notable portion of emissions-related MOT failures to EGR clogging in city-driven vehicles. Cold-start cycles and short-trip driving increase cam and lifter stress, making oil quality and interval adherence critical.
Analysis derived from Ford technical bulletins (2007–2011) and UK DVSA failure statistics (2012–2023). 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 ANU delivers smooth power and refined operation, but early models (2004–2007) had reliability concerns, especially camshaft and lifter wear. Later revisions (post-2008) improved valvetrain durability, so well-maintained examples can be quite robust. Regular servicing and using high-quality oil (5W-30 Ford WSS-M2C913-A) greatly aid longevity.
The biggest issues are camshaft and lifter wear (leading to ticking noise or misfires), intake carbon buildup affecting EGR and throttle bodies, and oil leaks from gaskets. Other complaints include throttle body malfunctions and occasional injector faults. These are well-documented in Ford service bulletins, particularly SIB 08M07 for valvetrain concerns.
This 2.5L petrol was used in several Ford models from 2004–2011, including the Mondeo (2.5 Duratec), S-Max (2.5 Duratec), and Galaxy (2.5 Duratec). Volvo also used the engine (as the base for the 3.2L inline-six) in S80 from 2007–2010. Shared architecture enables cross-platform serviceability with proper documentation.
Yes. The ANU is moderately tunable. ECU remaps typically gain +20–30 kW safely on stage 1, as the stock internals handle increased load well. Aftermarket upgrades (exhaust, intake) can support further gains. Enthusiasts frequently remap S-Max and Galaxy models for improved throttle response. Tuning should be done carefully to avoid overloading the valvetrain.
Moderate. In a Mondeo 2.5 Duratec (125 kW) from around 2008, typical consumption is ~10.8 L/100km (city) and ~6.9 L/100km (highway), or about 35 mpg UK combined. Real-world figures depend on load and driving style, but expect 30–38 mpg (UK) on mixed roads for a healthy ANU with proper maintenance.
Yes. The ANU series (like most modern Fords) is an interference engine. This means if the timing chain fails, pistons can strike open valves, causing catastrophic internal damage. That's why chain maintenance and oil quality are critical—any timing-related noise should be investigated immediately.
Ford specifies a 5W-30 synthetic oil meeting Ford WSS-M2C913-A (or newer) spec. Always use a quality oil designed for naturally aspirated petrol engines and change it every 15,000 km to ensure proper camshaft lubrication and prevent lifter wear.
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DVLA: Engine Changes & MoT
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Regulation (EC) No 715/2007
Euro emissions framework for vehicle type approval.
Commission Regulation (EU) 2017/1151
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