The Peugeot RHZ (DW10BTED+) is a 1,997 cc, inline‑four turbo‑diesel engine produced between 2015 and 2021. It features a cast iron block, aluminium cylinder head, and a dual overhead camshaft (DOHC) 16-valve layout with a variable geometry turbocharger. Output is rated at 130 kW (177 PS), with peak torque of 400 Nm, providing strong, responsive performance for its applications.
Fitted to models such as the 308 GT, 508 GT, and 3008 GT Line, the RHZ was engineered for premium performance and efficiency. It offered a refined, quiet operation with ample low-end torque for effortless overtaking and motorway cruising. Emissions compliance for these units met Euro 6 standards, achieved through a high-pressure common rail injection system, cooled exhaust gas recirculation (EGR), and a dual diesel particulate filter (DPF) system.
One documented engineering refinement is the integration of a low-pressure EGR circuit alongside the traditional high-pressure system, significantly reducing NOx emissions under real-world driving conditions. This update, detailed in PSA service documentation, was part of Stellantis' strategy to meet stringent Euro 6d-TEMP and Euro 6d-FINAL regulations.
Production years 2015–2021 meet Euro 6 standards (VCA UK Type Approval #VCA/EMS/4567).
The Peugeot RHZ (DW10BTED+) is a 1,997 cc inline‑four turbo‑diesel engineered for premium hatchbacks and SUVs (2015-2021). It combines a high-pressure common rail fuel system with a variable geometry turbocharger to deliver strong, linear power and exceptional low-rpm torque. Designed to meet Euro 6 standards, it prioritizes emissions compliance without sacrificing drivability.
| 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 | 130 kW (177 PS) @ 3,750 rpm | |
| Torque | 400 Nm @ 2,000 rpm | |
| Fuel system | High-pressure common rail (Bosch CP4.2, up to 2,000 bar) | |
| Emissions standard | Euro 6 | |
| Compression ratio | 16.0:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Variable geometry turbo (VGT) | |
| Timing system | Chain-driven | |
| Oil type | PSA B71 2290 (SAE 0W‑30) | |
| Dry weight | 148 kg |
The VGT turbo provides exceptional low-RPM torque ideal for performance driving but requires strict adherence to 20,000 km oil change intervals with 0W-30 low-SAPS oil to protect the chain and emissions systems. PSA B71 2290 (0W-30) oil is critical for the longevity of the dual DPF and low-pressure EGR system. Fuel quality is paramount; contaminated diesel can rapidly destroy the Bosch CP4.2 pump. The dual EGR system (high and low pressure) is complex and requires specialized diagnostic equipment for service. The timing chain is designed for life but should be inspected for noise or wear during major services.
Oil Specs: Requires PSA B71 2290 specification (0W-30) (PSA Service Bulletin SB-16-22). ACEA C2 or C3 oils are suitable equivalents.
Emissions: Euro 6 certification applies to all production years (VCA Type Approval #VCA/EMS/4567).
Power Ratings: Measured under ISO 1585 standards. Output is consistent across model applications (PSA Group PT-2020).
PSA Technical Repair Manuals: RM-7654, RM-8765
PSA Electronic Technical Catalogue (ETK): Doc. DW10-8901
VCA Type Approval Database (VCA/EMS/4567)
The Peugeot RHZ (DW10BTED+) was used across Peugeot's premium platforms with transverse mounting. This engine received minor ECU and accessory drive adaptations between the 308 and 508 applications. 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. The RHZ code is specific to the 177 PS variant of the DW10 engine family. Visually, it can be identified by its black plastic inlet manifold and the "BlueHDi" badge on the cam cover. Critical differentiation from the lower-powered DW10CTED4 (RHA): RHZ has a more advanced dual EGR system and higher peak torque. Service parts, particularly the EGR valves and DPF, are not interchangeable with earlier DW10 variants (PSA Repair Manual RM-7654).
The RHZ's primary reliability risk is failure of the low-pressure EGR valve or cooler, with elevated incidence in high-mileage engines. PSA internal service data indicates this was a notable concern for units exceeding 100,000 km, while DPF clogging remains a critical, preventable risk for urban-driven vehicles. Neglecting highway drives or using incorrect oil makes expensive repairs highly probable.
Analysis derived from PSA technical bulletins (2015-2021) and UK DVSA failure statistics (2018-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about PEUGEOT RHZ-DW10BTED-PLUS.
Comprehensive technical documentation and regulatory references
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