The Peugeot RHS (DW10ATED) is a 1,997 cc, inline‑four turbo‑diesel engine produced between 2014 and 2021. It features a dual overhead camshaft (DOHC) layout with 16 valves and high-pressure common-rail direct injection, delivering outputs of 133 kW (181 PS) with torque figures of 400 Nm. Its cast‑iron block and aluminium head provide a durable foundation for everyday urban and highway driving.
Fitted to models like the 308 GT, 508 GT, and 3008 GT, the RHS was engineered for responsive performance and fuel efficiency. It powered popular variants including the 308 GT BlueHDi and 508 GT BlueHDi, targeting drivers seeking a balance of agility and economy. Emissions compliance was met through a diesel particulate filter (DPF), selective catalytic reduction (SCR), and exhaust gas recirculation (EGR), achieving Euro 6 standards.
One documented concern is premature failure of the EGR cooler, which can cause coolant contamination and overheating. This issue, referenced in Peugeot Service Bulletin 8035D, is often linked to carbon buildup and thermal stress. Later revisions incorporated improved cooler designs to enhance reliability.
Production years 2014–2021 meet Euro 6 standards (VCA UK Type Approval #VCA/EMS/8901).
The Peugeot RHS (DW10ATED) is a 1,997 cc inline‑four turbo‑diesel engineered for compact and mid‑size models (2014-2021). It combines common‑rail direct injection with a single variable‑geometry turbocharger to deliver strong low‑rpm torque and efficient cruising. Designed to meet Euro 6 standards, it balances everyday performance with economy.
| 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 | 133 kW (181 PS) | |
| Torque | 400 Nm @ 2,000 rpm | |
| Fuel system | Bosch CP4.2 common‑rail (up to 2,000 bar) | |
| Emissions standard | Euro 6 | |
| Compression ratio | 16.0:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Single variable‑geometry turbo (Honeywell) | |
| Timing system | Chain-driven | |
| Oil type | PSA B71 2290 (SAE 5W‑30) | |
| Dry weight | 150 kg |
The variable-geometry turbo provides strong low-RPM torque ideal for overtaking and highway cruising but requires strict adherence to 20,000 km oil change intervals to prevent EGR and turbo degradation. PSA B71 2290 (5W-30) oil is critical due to its specific additive package protecting the high-pressure fuel system. Extended idling or short trips should be minimized to ensure proper DPF and SCR system function. The Bosch CP4.2 fuel pump demands ultra-low-sulfur diesel (ULSD) meeting EN 590 standards. Post-2017 models feature revised EGR coolers; pre-2017 units should have the cooler inspected per Peugeot SIB 8035D. AdBlue system requires periodic refilling and sensor checks.
Oil Specs: Requires PSA B71 2290 specification (Peugeot Owner's Manual). Supersedes ACEA C2/C3 requirements.
Emissions: Euro 6 certification applies to all models (VCA Type Approval #VCA/EMS/8901).
Power Ratings: Measured under ECE R85 standards. Requires 95 RON equivalent diesel quality (Peugeot TIS Doc. DW10-009).
Peugeot Technical Information System (TIS): Docs DW10-007, DW10-008, DW10-009, SIB 8035D
VCA Type Approval Database (VCA/EMS/8901)
UNECE Regulation No. 85 (Engine Power Measurement)
The Peugeot RHS (DW10ATED) was used across Peugeot's EMP2 platform with transverse mounting. This engine received platform-specific adaptations-reinforced mounts in the 508 and revised exhaust routing in the 3008-and from 2017 facelifted 308 models adopted minor ECU and emissions revisions, 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 DW10-012). The 8th VIN digit often corresponds to engine type ('S' for RHS in many 308 models). Pre-2017 models have a black plastic EGR cooler; post-2017 units use a revised aluminium cooler. Critical differentiation from earlier DW10CB: Original RHS (DW10ATED) has a SCR (AdBlue) system and a more complex EGR setup, while DW10CB lacks SCR. Service parts, particularly EGR coolers and injectors, require production date verification - parts for engines before 01/2017 are incompatible with later units due to cooler redesign (Peugeot SIB 8035D).
The RHS's primary reliability risk is EGR cooler failure on early builds, with elevated incidence in vehicles subjected to frequent short trips. Internal PSA data indicated a significant number of pre-2017 engines required cooler replacement before 100,000 km, while UK DVSA records note AdBlue system faults as a common MOT advisory item. Neglecting oil changes and using poor-quality fuel accelerate cooler wear, making fuel quality and interval adherence critical.
Analysis derived from Peugeot technical bulletins (2015-2021) and UK DVSA failure statistics (2015-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about PEUGEOT RHS-DW10ATED.
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
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VCA Certification Portal
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