The Peugeot RHM (DW10ATED4) is a 1,997 cc, inline‑four turbo‑diesel engine produced between 2010 and 2018. It features a dual overhead camshaft (DOHC) design with 16 valves and high — pressure common rail direct injection, delivering 120 kW (163 PS) and 340 Nm of torque. Its cast‑iron block and aluminium cylinder head construction provide durability while supporting advanced emissions control systems.
Fitted to premium models like the 508, 3008, and 5008, the RHM engin…
Production years 2010–2014 meet Euro 5 standards; 2015–2018 models meet Euro 6 compliance depending on market (VCA UK Type Approval #VCA/EMS/5681).
The Peugeot RHM (DW10ATED4) is a 1,997 cc inline‑four turbo‑diesel engineered for mid-size and premium SUVs (2010-2018). It combines DOHC 16-valve architecture with a variable geometry turbocharger and high-pressure common rail injection to deliver strong, flat torque and efficient long-distance performance. Designed to meet Euro 5 and Euro 6 standards, it integrates advanced emissions after-treatment for regulatory compliance.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,997 cc | |
Fuel type | Diesel | |
Configuration | Inline‑4, DOHC, 16‑valve | |
Aspiration | Turbocharged | |
Bore × stroke | 85.0 mm × 88.0 mm | |
Power output | 120 kW (163 PS) @ 3,750 rpm | |
Torque | 340 Nm @ 2,000 rpm | |
Fuel system | High-pressure common rail (Bosch CP4.2, up to 1,800 bar) | |
Emissions standard | Euro 5 (pre‑2015); Euro 6 (2015–2018) | |
Compression ratio | 16.0:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Single variable‑geometry turbo (Honeywell) | |
Timing system | Chain-driven (front-mounted) | |
Oil type | PSA B71 2290 (SAE 5W‑30) | |
Dry weight | 158 kg |
The Peugeot RHM (DW10ATED4) was used across Peugeot's premium D-segment platforms with transverse mounting. This engine received platform-specific adaptations-different ECU mappings for the 508 and 3008-and from 2015 the facelifted 508 received SCR system updates for Euro 6, creating minor software and hardware interchange limits. All adaptations are documented in OEM technical bulletins.
The RHM's primary reliability risk is high-pressure fuel pump failure, with elevated incidence in vehicles using poor-quality fuel or exceeding service intervals. Internal PSA quality reports indicated a notable failure rate for pumps in early Euro 5 models, while UK DVSA data shows DPF-related issues as a leading cause of emissions test failure. Infrequent oil changes and low-quality fuel exacerbate wear, making adherence to service schedules critical.
Analysis derived from Peugeot technical bulletins (2012-2018) and UK DVSA failure statistics (2015-2023). 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 RHM is generally robust but requires diligent maintenance, particularly for the fuel system and emissions controls. Engines that have been well-maintained with high-quality fuel and timely filter changes can be very reliable. Neglect, especially of the fuel pump and DPF, leads to expensive failures.
The most critical issues are high-pressure fuel pump failure, EGR valve/carbon buildup, DPF saturation, and turbo actuator failure. These are well-documented in Peugeot service bulletins and owner reports, often linked to fuel quality and service neglect.
This 2.0L diesel engine was used in the premium Peugeot 508 (2010-2018), 3008 (2010-2016), and 5008 (2010-2016). It was also shared with Citroën, appearing in the DS5 (2011-2018) models, often badged as 2.0 HDi 163.
Yes. The RHM responds well to ECU remapping, typically gaining 20-30 kW (27-40 PS) and improved torque. The stock internals and turbo are robust enough for moderate tuning. Pushing power significantly higher requires upgraded injectors, a stronger clutch, and potentially a larger intercooler.
Fuel economy is excellent for its performance. In a Peugeot 508, expect around 5.5 L/100km (51 mpg UK) in combined driving. In the heavier 3008 SUV, figures are closer to 6.0-6.5 L/100km (43-47 mpg UK). Real-world economy depends heavily on driving style and DPF regeneration cycles.
Yes. The RHM is an interference engine. If the timing chain fails or jumps teeth (though rare), the pistons will collide with the open valves, causing severe and expensive internal engine damage. Fortunately, the chain system is generally very durable.
Peugeot specifies oil meeting the PSA B71 2290 standard, typically a 5W-30 low-SAPS (C2/C3) fully synthetic oil. Using the correct specification is vital for protecting the emissions systems (DPF, SCR) and ensuring proper lubrication of the turbocharger and chain.
Comprehensive technical documentation and regulatory references
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Regulatory Stability
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PEUGEOT Official Site
Owner literature, service manuals, technical releases, and plant documentation.
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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