The Citroën RHW (DW10ATED4) is a 1,997 cc, inline — four, turbocharged diesel engine produced between 2008 and 2018. It is part of the PSA DW engine family, derived from the Ford/PSA joint — venture DLD platform, and engineered for durability and strong low — end torque. Featuring high — pressure common — rail direct injection, variable geometry turbocharging (VGT), and DOHC 16 — valve layout, it produces 88 kW (120 PS) at 4,000 rpm and 300 Nm at 1,750 rpm, delivering robust per…
Production years 2008–2018 meet Euro 5 standards .
The Citroën RHW (DW10ATED4) is a 1,997 cc inline-four turbocharged diesel engine engineered for mid-to-large applications (2008–2018). It combines high-pressure common-rail injection with a variable geometry turbocharger to deliver strong low-RPM torque and smooth cruising. Designed to meet Euro 5 standards, it balances performance with acceptable fuel economy and emissions for executive and fleet use.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,997 cc | |
Fuel type | Diesel (EN 590 compliant, ULSD) | |
Configuration | Inline-4, DOHC, 16-valve | |
Aspiration | Turbocharged (variable geometry) | |
Bore × stroke | 85.0 mm × 88.0 mm | |
Power output | 88 kW (120 PS) @ 4,000 rpm | |
Torque | 300 Nm @ 1,750 rpm | |
Fuel system | Bosch CRS 2-20 common-rail (up to 1,800 bar) | |
Emissions standard | Euro 5 | |
Compression ratio | 16.0:1 | |
Cooling system | Water-cooled, electric thermostat | |
Turbocharger | Honeywell VGT with electronic actuator | |
Timing system | Timing belt (DOHC) | |
Oil type | Total Rubia TIR 5W-30 | |
Dry weight | 165 kg |
The Citroën RHW (DW10ATED4) was used across Citroën's PF3/PF4 platforms with longitudinal mounting and shared with Peugeot and Ford derivatives. This engine received platform-specific adaptations-reinforced mounts in the C6 and revised intake manifolds in the Jumpy-and from 2012 the facelifted C5 adopted updated ECU mapping and SCR calibration, creating interchange limits. All adaptations are documented in OEM technical bulletins.
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The DW10ATED4 delivers strong torque and good efficiency, but pre-2012 models have known EGR cooler concerns. Later revisions (post-2012) improved thermal management. Well-maintained engines with regular oil changes using correct specification (5W-30) can exceed 200,000 km. Drivers should prioritize coolant quality and avoid short trips to prevent DPF and EGR issues.
Primary issues include EGR cooler cracking (especially pre-2012), DPF clogging, timing belt failure if neglected, and high-pressure fuel pump failure. These are documented in PSA service bulletins and linked to coolant quality, fuel standards, and driving patterns. Regular maintenance and use of EN 590 diesel are essential to mitigate risks.
The DW10ATED4 was used in the C5 (2.0 HDi 120), C6 (2.0 HDi 120), and Jumpy (2.0 HDi 120) from 2008 to 2018. It was also shared with Peugeot (508, Boxer) and Ford (Transit Custom) under the DLD-420 designation. All models are Euro 5 compliant.
Yes, the DW10ATED4 responds well to ECU remapping, with stage 1 tunes typically adding +30–40 kW. However, stock turbos and fuel systems are near their limits, so supporting mods (intercooler, exhaust) are recommended. Over-tuning without cooling upgrades risks turbo or CRS 2-20 pump failure.
Official combined figures range from 5.1–5.8 L/100 km (~55–49 mpg UK). Real-world consumption is typically 6.0–7.0 L/100 km (~47–40 mpg UK), depending on driving style. The C5 and C6 achieve best economy on motorways. Using EN 590 diesel ensures optimal efficiency and prevents fuel system damage.
Yes. The DW10ATED4 is an interference engine. If the timing belt fails or skips, pistons will contact open valves, resulting in catastrophic engine damage. Any timing-related rattles must be investigated immediately. Replacement of the belt kit at recommended intervals is critical.
PSA specifies Total Rubia TIR 5W-30 (or equivalent meeting PSA B71 2290). This low-SAPS oil is essential for turbocharger and DPF system protection. Oil must be changed every 15,000 km or annually to prevent sludge, coking, and premature wear.
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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