The Citroën DW10BTED4 is a 1,997 cc, inline-four turbo-diesel engine produced between 2008 and 2015. It forms part of the PSA DW10 family, widely used across B- and C-segment vehicles, delivering 109 kW (148 PS) and 340 Nm of torque. Featuring common-rail direct injection (up to 1,600 bar), variable geometry turbocharging (VGT), and DOHC valvetrain, it was engineered for responsive mid-range performance and improved fuel economy over earlier DW10 variants.
Fitted to models including the C4 Picasso, C5, and Relay, the DW10BTED4 was designed for balanced driving dynamics—offering strong low-end torque for urban use and stable motorway cruising. Emissions compliance was achieved through cooled 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 1476. Prolonged operation with fuel levels below ¼ tank can induce cavitation and premature wear in the Bosch CP3 pump. From 2012, revised fuel rail pressure calibration and updated pump internals were introduced to improve durability.
Production years 2008–2015 meet Euro 5 emissions standards (VCA UK Type Approval #VCA/EMS/5678).
The Citroën DW10BTED4 is a 1,997 cc inline-four turbo-diesel engineered for medium-duty passenger and light commercial applications (2008–2015). It combines common-rail direct injection with variable geometry turbocharging and SCR-AdBlue technology to deliver responsive torque and reduced NOx emissions. Designed to meet Euro 5 standards, it balances real-world efficiency with regulatory compliance.
| 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 | 109 kW (148 PS) @ 3,600 rpm | |
| Torque | 340 Nm @ 2,000 rpm | |
| Fuel system | Bosch CP3 common-rail (up to 1,600 bar), piezo injectors | |
| Emissions standard | Euro 5 with SCR-AdBlue | |
| Compression ratio | 16.7:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | Single VGT (Honeywell GT1544V) | |
| Timing system | Timing belt (replaced at 150,000 km or 8 years) | |
| Oil type | PSA B71 2290 (5W-30) | |
| Dry weight | 178 kg |
The VGT and SCR system deliver strong mid-range torque and low NOx output but require strict adherence to service intervals to prevent DPF saturation and EGR clogging. PSA B71 2290 (5W-30) oil is essential to maintain turbo and injector longevity. Frequent short trips increase soot accumulation, necessitating periodic highway runs for passive DPF regeneration. The Bosch CP3 HPFP is sensitive to low fuel levels; operation below ¼ tank risks cavitation and premature failure. AdBlue tank must be refilled every 12,000–15,000 km to prevent power derate. Timing belt replacement is mandatory at 150,000 km or 8 years, including tensioner and rollers per PSA SIB 1476.
Oil Specs: Requires PSA B71 2290 (5W-30) specification (PSA SIB 1476). Replaces ACEA B4-08 in PSA applications.
Emissions: Euro 5 certification applies to all models (2008–2015) with SCR-AdBlue (VCA Type Approval #VCA/EMS/5678).
Power Ratings: Measured under ISO 1585. Full torque requires ULSD meeting EN 590 and adequate AdBlue levels (PSA TIS Doc. D10480).
PSA Technical Information System (TIS): Docs D10480, D11205, SIB 1476
VCA Type Approval Database (VCA/EMS/5678)
ISO 1585 Road vehicles — Test method for the measurement of fuel consumption
The Citroën DW10BTED4 was used across Citroën's Berlingo, Jumpy, and C-segment platforms with transverse mounting and shared with Peugeot and Fiat Professional under platform partnerships. This engine received application-specific tuning—higher idle settings in Relay van variants and revised EGR flow in C4 Picasso—and from 2012 the updated C5 facelift adopted a recalibrated fuel map, creating interchange limits. Partnerships enabled Fiat Scudo and Opel Vivaro to use the same engine architecture. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped horizontally on the front face of the cylinder block, near the timing belt cover (PSA TIS D10480). The 8th VIN digit indicates engine type ('K' for DW10BTED4). Pre-2012 models have a silver valve cover with a black plastic cam cover; post-2012 units use all-black covers. Critical differentiation from DW10BTE: DW10BTED4 includes SCR-AdBlue hardware (dosing unit, tank, sensors). Service parts require model-year verification—fuel pumps for pre-2012 models are incompatible with post-2012 recalibrated ECUs due to pressure mapping changes (PSA SIB 1476).
The DW10BTED4's primary reliability risk is high-pressure fuel pump degradation, with elevated incidence in urban-driven vehicles with frequent low-fuel operation. PSA internal reports from 2013 noted increased HPFP failures in fleet vehicles with poor refuelling habits, while UK DVSA data links a significant portion of emissions-related MOT failures to EGR/DPF clogging in stop-start conditions. Short trips and infrequent regeneration cycles increase soot load, making driving pattern and service adherence 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 DW10BTED4.
Comprehensive technical documentation and regulatory references
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