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 engine was engineered for refined highway cruising and strong low-end torque. Emissions compliance was achieved through a diesel particulate filter (DPF) and selective catalytic reduction (SCR) with AdBlue injection, allowing it to meet stringent Euro 5 standards, with some later variants achieving Euro 6.
One documented concern is premature failure of the high-pressure fuel pump, which can cause hard starting and loss of power. This issue, highlighted in Peugeot Service Bulletin 7021 D 12, is often linked to fuel contamination or extended service intervals. Peugeot addressed this by revising pump internals and updating fuel filter service schedules.
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 variable geometry turbo provides strong, flat torque ideal for towing and highway cruising but requires strict adherence to 20,000 km oil and fuel filter change intervals to protect the high-pressure fuel system. PSA B71 2290 (5W-30) oil is critical for protecting the turbocharger and chain system. The Bosch CP4.2 pump is sensitive to fuel contamination; using poor-quality diesel can lead to premature failure per SIB 7021 D 12. The SCR/AdBlue system requires regular top-ups and can trigger limp mode if depleted. EGR valves and coolers require periodic cleaning to maintain emissions compliance.
Oil Specs: Requires PSA B71 2290 specification (Peugeot Owner's Manual). Equivalent to ACEA C2/C3.
Emissions: Euro 5 certification applies to pre-2015 models; Euro 6 for 2015-2018 (VCA Type Approval #VCA/EMS/5681).
Power Ratings: Measured under SAE J1349 standards. Output consistent across applications with correct fuel (EN 590) (Peugeot TIS Doc. M45678).
Peugeot Technical Information System (TIS): Docs M45678, M45679, SIB 7021 D 12
VCA Type Approval Database (VCA/EMS/5681)
SAE International: J1349 Engine Power Certification Standards
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.
Locate the engine code stamped on the front face of the cylinder block, near the gearbox flange (Peugeot TIS M45678). The 8th VIN digit often corresponds to the engine type ('H' for RHM in many 508/3008 models). Critical differentiation from the non-SCR DW10BTED4: RHM (DW10ATED4) has a visible AdBlue tank and injector in the exhaust system. Service parts, particularly fuel pumps and injectors, require production date and emissions standard verification for compatibility (Peugeot SIB 7021 D 12).
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.
Find answers to most commonly asked questions about PEUGEOT RHM-DW10ATED4.
Comprehensive technical documentation and regulatory references
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PEUGEOT Official Site
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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
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