The Citroën DW10ATED4 is a 1,997 cc, inline — four turbo — diesel engine produced between 2004 and 2011. It features a SOHC 8 — valve configuration with high — pressure common — rail fuel injection (Delphi Multec DCR) and a fixed — geometry turbocharger, delivering robust low — end torque and mechanical simplicity for mainstream passenger applications. In standard tune it produces 80 kW (109 PS), with peak torque of 235 Nm available from 1,750 rpm, making it well — suited for ur…
All production years (2004–2011) meet Euro 4 emissions standards .
The Citroën DW10ATED4 is a 1,997 cc inline-four turbo-diesel engineered for compact and mid-size passenger applications (2004–2011). It combines common-rail direct injection with a fixed-geometry turbocharger to deliver strong low-end torque and reliable operation. Designed to meet Euro 4 standards, it balances economy with environmental compliance.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,997 cc | |
Fuel type | Diesel | |
Configuration | Inline-4, SOHC, 8-valve | |
Aspiration | Turbocharged | |
Bore × stroke | 85.0 mm × 88.0 mm | |
Power output | 80 kW (109 PS) @ 4,000 rpm | |
Torque | 235 Nm @ 1,750–2,500 rpm | |
Fuel system | Delphi Multec DCR common-rail (up to 1,600 bar) | |
Emissions standard | Euro 4 | |
Compression ratio | 17.0:1 | |
Cooling system | Water-cooled | |
Turbocharger | Single fixed-geometry turbo (Garrett GT15) | |
Timing system | Timing belt (interval: 150,000 km or 7 years) | |
Oil type | SAE 5W-30 (ACEA B4) | |
Dry weight | 142 kg |
The Citroën DW10ATED4 was used across Citroën's C4, C5, and C6 platforms with transverse mounting and front-wheel drive layout. This engine received platform-specific adaptations—reinforced mounts in the C6 and revised ECU mapping in the C5—and from 2008 the facelifted C4 models adopted updated Delphi DCR fuel pumps with improved wear resistance, creating interchange limits. All adaptations are documented in OEM technical bulletins.
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The DW10ATED4's primary reliability risk is high-pressure fuel pump wear on early production engines, with elevated incidence in vehicles used for frequent short trips. PSA internal field reports from 2007 indicated a notable share of pumps failing before 120,000 km due to inadequate fuel lubricity, while VCA MOT data shows EGR clogging as a recurring failure point in urban-driven examples. Cold-start cycles and low-quality diesel increase fuel system stress, making fuel quality and EGR maintenance critical.
Analysis derived from manufacturer technical service bulletins and industry workshop records. Repair procedures should follow manufacturer guidelines.
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The DW10ATED4 is generally reliable with proper maintenance. Timing belt replacement every 150,000 km or 7 years is essential to prevent valve damage. Early models (pre-2008) are prone to HPFP wear if low-quality diesel is used. With correct oil, fuel, and regular servicing, these engines can exceed 250,000 km, particularly in mixed-use applications.
Key issues include high-pressure fuel pump wear (especially pre-2008), EGR valve coking in city-driven vehicles, timing belt failure, and coolant leaks from the thermostat housing. These are documented in PSA service bulletins. Regular servicing, use of quality diesel, and periodic highway driving mitigate most risks.
The DW10ATED4 was used in the Citroën C4 (2004–2011), C5 (2004–2008), and C6 (2005–2011). It was the 2.0 HDi 109 PS variant with common rail and fixed-geometry turbo. No other PSA brands received this exact calibration, though mechanically similar engines exist in Peugeot and Fiat models.
Aftermarket ECU tuning is common on the RHM-DW10ATED4 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.
Fuel consumption is excellent for a 2.0L diesel. Expect ~6.2 L/100km (city) and ~4.5 L/100km (highway), or approximately 52 mpg UK combined. Real-world figures range from 48–55 mpg (UK) depending on driving style and load. Highway efficiency is particularly strong, making it ideal for longer journeys.
Yes. The DW10ATED4 is an interference engine. If the timing belt fails or skips, the pistons can strike the open valves, causing severe internal damage. This makes strict adherence to the 150,000 km or 7-year belt replacement interval absolutely critical. Any signs of belt wear should prompt immediate replacement.
PSA specifies SAE 5W-30 oil meeting ACEA B4 standards. This viscosity ensures proper lubrication of the high-pressure fuel pump and turbocharger. Change oil every 15,000 km or annually. Avoid ACEA A5/B5 or low-SAPS oils, as they are not compatible with the older diesel engine design.
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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