The Peugeot 4HW (DW12BTED4) is a 2,179 cc, inline‑four turbo‑diesel engine produced between 2010 and 2016. It features a high — pressure common — rail injection system, a fixed — geometry turbocharger, and dual overhead camshafts. In standard form it delivered 120 kW (163 PS), with torque peaking at 340 Nm, providing strong, linear power delivery suitable for larger vehicles.
Fitted to models such as the Peugeot 508, 5008, and Partner Origin, the 4HW was engineered for ref…
All production years (2010–2016) meet Euro 5 standards (VCA UK Type Approval #VCA/EMS/9876).
The Peugeot 4HW (DW12BTED4) is a 2,179 cc inline‑four turbo‑diesel engineered for D-segment sedans and MPVs (2010-2016). It combines high-pressure common-rail injection with a fixed-geometry turbocharger to deliver strong, linear torque and refined highway performance. Designed to meet Euro 5 standards, it prioritizes durability and towing capacity for larger vehicles.
| 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) | |
Torque | 340 Nm @ 2,000 rpm | |
Fuel system | Bosch CP3 common‑rail (up to 1,600 bar) | |
Emissions standard | Euro 5 | |
Compression ratio | 16.0:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Single fixed‑geometry turbo (Honeywell) | |
Timing system | Chain-driven | |
Oil type | PSA B71 2290 (SAE 5W‑40) | |
Dry weight | 185 kg |
The Peugeot 4HW (DW12BTED4) was used across Peugeot's D-segment platforms with transverse mounting. This engine received platform-specific adaptations-reinforced engine mounts in the Partner Origin for commercial use-and maintained consistent core architecture throughout its production. All adaptations are documented in OEM technical bulletins.
The 4HW (DW12BTED4)'s primary reliability risk is dual-mass flywheel (DMF) failure, with elevated incidence in vehicles used for towing or high-mileage commuting. PSA internal data indicated a notable number of pre-2013 engines required flywheel replacement, while UK DVSA records show EGR-related faults are common in high-mileage examples. Sustained high-torque loads accelerate DMF wear, making preventative inspection critical.
Analysis derived from PSA technical bulletins (2010-2016) and UK DVSA failure statistics (2016-2024). 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 4HW is a robust and torquey engine when maintained correctly. The main concern is the dual-mass flywheel on early models (2010-2012), which PSA addressed via a service bulletin. Later models are more reliable. Using the correct 5W-40 oil and avoiding constant heavy towing significantly improves longevity and prevents turbo and EGR issues.
The most common issues are dual-mass flywheel failure (early models), EGR valve/clogging, turbo oil feed line leaks, and injector seal leaks. These are well-documented in PSA service bulletins and owner reports, with the DMF being the most significant potential repair cost due to clutch replacement labor.
This 2.2L diesel was used in the Peugeot 508 (P83, 2010-2016), 5008 (P84, 2010-2016), and Partner Origin (M59, 2012-2016). It was also shared with Citroën (e.g., C5, C8) as part of the PSA Group's engine strategy for larger vehicles requiring more torque.
Yes, ECU remapping is common and can safely increase power to around 180-200 PS and torque to 400-420 Nm. The engine and turbo have good headroom. However, aggressive tuning significantly increases stress on the DMF and clutch, so a DMF upgrade is highly recommended alongside any remap.
Good for its size and power. In a 508 2.2 HDi 163, expect around 5.5-6.0 L/100km (51-47 mpg UK) combined. Real-world figures vary: city driving yields ~7.0 L/100km (40 mpg UK), while highway cruising can achieve ~4.8 L/100km (59 mpg UK). DMF or EGR issues will reduce economy.
Yes. Like virtually all modern engines, the 4HW is an interference design. If the timing chain were to fail (though rare), the pistons would collide with the valves, causing catastrophic engine damage. Fortunately, the chain is very durable with proper oil maintenance.
Peugeot mandates a 5W-40 oil meeting the PSA B71 2290 specification. This is crucial for protecting the turbocharger and maintaining engine cleanliness. Using the wrong oil can lead to increased sludge and accelerated wear. Change intervals should not exceed 20,000 km or one year.
Comprehensive technical documentation and regulatory references
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DVLA: Engine Changes & MoT
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Regulation (EC) No 715/2007
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