The Citroën DW10ATED4 is a 1,997 cc, inline — four turbo — diesel engine produced between 2008 and 2016. It features common rail direct injection, variable geometry turbocharging (VGT), and dual overhead camshafts (DOHC), delivering 120 kW (163 PS) and 340 Nm of torque. High — pressure fuel delivery enables strong low — rpm responsiveness for urban and motorway use.
Fitted to models such as the C5, C6, and Relay, the DW10ATED4 was engineered for balanced performance, refin…
Production years 2008–2016 meet Euro 5 standards .
The Citroën DW10ATED4 is a 1,997 cc inline-four turbo-diesel engineered for mid-size and commercial vehicles (2008–2016). It combines common-rail direct injection with a variable-geometry turbocharger to deliver responsive low-end torque and efficient highway cruising. Designed to meet Euro 5 emissions standards, it balances performance with regulatory compliance and real-world economy.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,997 cc | |
Fuel type | Diesel | |
Configuration | Inline-4, DOHC, 16-valve | |
Aspiration | Turbocharged (VGT) | |
Bore × stroke | 85.0 mm × 88.0 mm | |
Power output | 120 kW (163 PS) @ 4,000 rpm | |
Torque | 340 Nm @ 2,000–2,500 rpm | |
Fuel system | Delphi HP4 common-rail (up to 1,800 bar) | |
Emissions standard | Euro 5 | |
Compression ratio | 16.4:1 | |
Cooling system | Water-cooled | |
Turbocharger | Single variable-geometry turbo (Garrett GT1749V) | |
Timing system | Timing belt (interval: 180,000 km or 10 years) | |
Oil type | Refer to vehicle handbook / manufacturer specification | |
Dry weight | 178 kg |
The Citroën DW10ATED4 was used across Citroën's C5/C6/Relay platforms with longitudinal mounting and shared with Peugeot and Fiat under platform agreements. This engine received platform-specific adaptations—reinforced mounts in the Relay and revised EGR calibration in the C6—and from 2013, the facelifted C5 adopted revised SCR dosing logic, creating interchange limits. Partnerships allowed Fiat's Ducato to use the same base engine. All adaptations are documented in OEM technical bulletins.
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The DW10ATED4's primary reliability risk is high-pressure fuel pump (HPFP) failure, with elevated incidence in urban fleets with low fuel discipline. PSA internal reports from 2013 indicated a significant share of pre-2012 pumps failing before 150,000 km when operated below 1/4 tank, while VCA MOT data links EGR/DPF clogging to city-driven commercial units. Frequent short trips and low fuel levels increase pump and emissions system stress, making fuel management and oil quality critical.
Analysis derived from manufacturer technical service bulletins and industry workshop records. 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 DW10ATED4 offers solid performance and economy when properly maintained. Early models (2008-2011) are prone to HPFP failure if fuel levels are frequently low. Post-2012 revisions improved pump calibration. Regular timing belt service (180,000 km), use of PSA B71 2290 oil, and consistent AdBlue refills are essential for longevity.
Key issues include HPFP failure from low fuel operation, EGR/DPF clogging in city use, timing belt neglect leading to engine damage, and AdBlue system faults in cold climates. These are documented in PSA service bulletins and field reports from fleet operators.
The DW10ATED4 was used in the Citroën C5 (2008–2016), C6 (2008–2012), and Relay (2008–2014). It was also shared with Peugeot 508 and Fiat Ducato under platform agreements. All models feature SCR/AdBlue for Euro 5 compliance.
Aftermarket ECU tuning is common on the 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.
In a C5 2.0 HDi 163, combined consumption is approximately 5.2 L/100 km (~54 mpg UK). Highway driving can achieve 4.5 L/100 km (~62 mpg UK), while city use may rise to 6.5 L/100 km (~43 mpg UK). Real-world economy depends on load and driving style.
Yes, the DW10ATED4 is an interference engine. If the timing belt fails, pistons will contact open valves, causing severe internal damage. Adhering to the 180,000 km or 10-year replacement interval is critical to avoid costly repairs.
PSA specifies B71 2290 (5W-30) low-ash synthetic oil. This is essential for protecting the HPFP, injectors, and DPF. Oil changes should occur every 15,000 km or annually to maintain engine health and emissions compliance.
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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