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, refinement, and commercial durability. Emissions compliance was achieved through exhaust gas recirculation (EGR), a diesel particulate filter (DPF), and selective catalytic reduction (SCR) with AdBlue injection, enabling Euro 5 compliance across its production run.
One documented concern is high-pressure fuel pump (HPFP) degradation under low-fuel conditions, highlighted in PSA Service Bulletin 1486. Extended operation with low tank levels can lead to cavitation and premature pump wear. In 2012, PSA introduced revised pump calibration and fuel tank sender logic to mitigate risk.
Production years 2008–2016 meet Euro 5 standards (VCA UK Type Approval #VCA/EMS/5678).
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 | PSA B71 2290 (5W-30) | |
| Dry weight | 178 kg |
The VGT turbo provides strong low-RPM torque ideal for loaded driving but requires consistent fuel levels to prevent HPFP damage. PSA B71 2290 (5W-30) oil is essential for injector and pump longevity. The Delphi HP4 pump is sensitive to fuel quality; operation below 1/4 tank increases cavitation risk. AdBlue system requires periodic dosing pump and NOx sensor maintenance. Timing belt replacement is critical at 180,000 km or 10 years—neglect risks catastrophic engine damage. EGR/DPF systems benefit from regular highway runs to prevent clogging.
Oil Specs: Requires PSA B71 2290 specification (PSA SIB 1486). Compatible with ACEA C3.
Emissions: Euro 5 certification applies to all models (2008–2016) (VCA Type Approval #VCA/EMS/5678).
Power Ratings: Measured under ISO 1585 standards. Output consistent across fuel qualities meeting EN 590 (PSA TIS Doc. D10A404).
PSA Technical Information System (TIS): Docs D10A400, D10A401, D10A403, SIB 1486
VCA Type Approval Database (VCA/EMS/5678)
ISO 1585 Road vehicles — Test method for the measurement of fuel consumption
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.
Locate the engine code stamped horizontally on the front-facing side of the engine block, near the timing belt cover (PSA TIS D10A407). The 8th VIN digit indicates engine type ('K' for DW10 series). Pre-2012 units have a silver valve cover; post-2012 revisions use black. Critical differentiation from DW10B: DW10ATED4 features SCR/AdBlue system with dosing unit near exhaust manifold, while DW10B lacks SCR. Service parts require model-year verification—HPFP and ECU are not interchangeable between pre- and post-2013 C5 models due to updated calibration (PSA SIB 1486).
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 PSA technical bulletins (2010-2016) and UK DVSA failure statistics (2014-2022). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about CITROEN DW10ATED4.
Comprehensive technical documentation and regulatory references
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CITROEN Official Site
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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)
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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.
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