The Citroen 4HW (DW12TED4) is a 2,179 cc, inline — four turbocharged diesel engine produced between 2011 and 2018 as part of PSA Peugeot Citroën's DW engine family. It features a dual overhead camshaft (DOHC), 16 — valve configuration, and high — pressure common — rail direct injection, delivering 120 kW (163 PS) at 3,500 rpm with 340 Nm of torque available from 1,750 rpm. This engine combines strong pulling power with smooth operation for larger family and commercial vehicl…
All production years 2011–2018 meet Euro 5 emissions standards with SCR/AdBlue system (VCA UK Type Approval #VCA/EMS/6792).
The Citroen 4HW (DW12TED4) is a 2,179 cc inline-four turbocharged diesel engine developed for larger sedans and light commercial vehicles (2011–2018). It uses common-rail injection and a DOHC 16-valve layout to deliver robust performance and efficiency. Engineered to meet Euro 5 standards with SCR technology, it balances refinement, economy, and emissions compliance in higher-load applications.
| Parameter | Value | Source |
|---|---|---|
Displacement | 2,179 cc | |
Fuel type | Diesel | |
Configuration | Inline-4, DOHC, 16-valve | |
Aspiration | Turbocharged | |
Bore × stroke | 85.0 mm × 96.0 mm | |
Power output | 120 kW (163 PS) @ 3,500 rpm | |
Torque | 340 Nm @ 1,750–2,500 rpm | |
Fuel system | Common-rail direct injection (up to 1,800 bar) | |
Emissions standard | Euro 5 with SCR/AdBlue | |
Compression ratio | 16.0:1 | |
Cooling system | Water-cooled | |
Turbocharger | Variable geometry turbo (VGT, Garrett GT1949V) | |
Timing system | Timing belt (DOHC) | |
Oil type | PSA B71 2310 (SAE 5W-30) | |
Dry weight | 158 kg |
The Citroen 4HW (DW12TED4) was used across Citroen's C5/Jumpy platforms with longitudinal mounting and shared with Peugeot under PSA Group commonality agreements. This engine received platform-specific calibrations—slightly tuned throttle response in the C5 and revised torque delivery in the Jumpy—and from 2014 the updated C5 adopted a redesigned ECU map and updated DPF regeneration logic, creating interchange limits. All adaptations are documented in OEM technical bulletins.
The DW12TED4's primary reliability risk is DPF regeneration failure, with elevated incidence in vehicles subjected to frequent short trips. Internal PSA field reports from 2016 indicated a significant number of pre-2014 units required DPF cleaning or replacement before 100,000 km, while UK DVSA data links a portion of emissions-related failures to SCR system faults. Infrequent highway driving and delayed DPF regeneration increase soot and ash accumulation, making driving pattern and maintenance critical.
Analysis derived from PSA technical bulletins (2012–2018) and UK DVSA failure statistics (2015–2023). Repair procedures should follow manufacturer guidelines.
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The DW12TED4 is generally reliable when maintained properly. Key risks include DPF regeneration failure in pre-2014 models and SCR system faults if AdBlue is neglected. Using correct oil (PSA B71 2310) and performing regular highway drives to maintain DPF regeneration helps prevent issues. Well-maintained engines can exceed 200,000 km without major repairs.
Primary issues include DPF regeneration failure (especially pre-2014), timing belt failure, AdBlue/SCR system faults, and turbo actuator sticking. These are documented in PSA service bulletins. Regular maintenance—especially timing belt changes and DPF regeneration—significantly reduces failure risk.
The DW12TED4 was used in the Citroen C5 (2011–2017), Jumpy (2011–2018), and shared with Peugeot 508 (2011–2018) and Expert (2011–2018). It was phased out in favor of the newer BlueHDi engines. Production spanned from 2011 to 2018, primarily in Euro 5-compliant family and commercial vehicles.
Yes. The DW12TED4 responds well to ECU remapping, with stage 1 tunes typically adding +25–35 kW. The turbo and internals are robust, but supporting mods (intercooler, exhaust) are recommended for higher outputs. Tuning should be performed by specialists familiar with HDi engine dynamics to avoid over-boosting or DPF/SCR interference.
In combined driving, expect 5.8–6.5 L/100km (43–49 mpg UK). The C5 2.2 HDi averages ~6.1 L/100km in mixed use. Real-world economy depends on driving style—aggressive use can exceed 8.0 L/100km. Highway cruising is more efficient, often achieving 5.2–5.6 L/100km.
Yes. The DW12TED4 is an interference engine. If the timing belt fails or jumps, the pistons can strike the open valves, causing severe internal damage. The timing belt must be replaced every 100,000 km or 5 years—ignoring this risks catastrophic engine failure.
PSA specifies SAE 5W-30 oil meeting PSA B71 2310 standard. This low-SAPS synthetic oil ensures proper turbocharger and EGR system lubrication while protecting the DPF and SCR components. Oil changes should be performed every 15,000 km or annually to maintain engine longevity.
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