The Peugeot RHH (DW10CTED4) is a 1,997 cc, inline‑four turbocharged diesel engine produced between 2010 and 2018. It features double overhead camshafts (DOHC), 16 valves, and a high — pressure common — rail fuel system with a variable geometry turbocharger (VGT). In standard specification, it delivered 120 kW (163 PS) and 340 Nm of torque, providing strong low — end pull for everyday drivability.
Fitted to models such as the 308, 508, and Partner, the RHH engine was enginee…
Production years 2010–2018 meet Euro 5 standards (VCA UK Type Approval #VCA/EMS/7890).
The Peugeot RHH (DW10CTED4) is a 1,997 cc inline‑four turbocharged diesel engine engineered for compact and mid‑size vehicles (2010-2018). It combines a high-pressure common-rail injection system with a variable geometry turbocharger to deliver strong, accessible torque and efficient highway cruising. Designed to meet Euro 5 standards, it balances performance with stringent emissions control.
| 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 | |
Compression ratio | 16.0:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Single variable-geometry turbo (Honeywell) | |
Timing system | Chain-driven (upper camshafts) | |
Oil type | ACEA C2 (e.g., SAE 5W-30) | |
Dry weight | 158 kg |
The Peugeot RHH (DW10CTED4) was used across Peugeot's PF2/PF3 platforms with transverse mounting. This engine received platform-specific adaptations-reinforced engine mounts in the 508 and revised ECU mapping for the Partner. All adaptations are documented in OEM technical bulletins.
The RHH's primary reliability risk is high-pressure fuel pump failure, with elevated incidence in vehicles using poor-quality fuel. Peugeot service bulletins document this issue, while general owner reports highlight DPF regeneration problems as a common secondary concern. Adherence to correct fuel quality and driving patterns is critical for mitigating these risks.
Analysis derived from Peugeot technical bulletins (2012-2017) 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 RHH engine can be very reliable if its known weaknesses are managed. The critical factor is using only high-quality, ultra-low-sulfur diesel to prevent fuel pump failure. Regular oil changes with the correct ACEA C2 specification and ensuring the DPF regenerates properly through highway driving are also essential for long-term health.
The most common and critical issue is failure of the high-pressure fuel pump. Other frequent problems include DPF clogging due to driving habits, EGR valve sticking from carbon buildup, and turbocharger actuator failure. These are well-documented in Peugeot service information.
This 2.0L HDi diesel engine was used in the Peugeot 308 (2010-2018), the Peugeot 508 (2011-2018), and the Peugeot Partner van (2010-2018). It was the higher-output 163 PS variant of the DW10 engine family for these models during the Euro 5 era.
Yes, significant gains are possible. An ECU remap can yield around 30-40 kW (40-55 PS) and 70-100 Nm more torque by optimizing fuel and boost maps. The engine's internals are generally robust enough to handle this. However, tuning increases stress on the turbo, clutch, and fuel system, so ensure these components are in excellent condition first.
Real-world fuel economy is very good. In a Peugeot 308, expect around 5.5-6.5 L/100km (43-51 mpg UK) in mixed driving. Highway cruising can see figures closer to 4.5-5.0 L/100km (56-63 mpg UK). City driving will be higher, around 7.0-8.0 L/100km (35-40 mpg UK), especially if DPF regeneration is frequent.
Yes. The RHH is an interference engine. If the timing chain were to fail or jump significantly, the pistons would collide with the open valves, causing severe internal engine damage. While the chain is generally robust, any unusual noise should be investigated.
Peugeot specifies an oil meeting ACEA C2 standards. A 5W-30 viscosity grade is typically recommended. This low-SAPS (Sulphated Ash, Phosphorus, Sulphur) oil is crucial for protecting the DPF and ensuring its longevity. Using the wrong oil can lead to premature DPF clogging.
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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