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…
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 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.
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.
The most common questions about engine codes, what they mean, how to find them and how this database works
The RHZ can be reliable long-term with meticulous maintenance. The critical factors are using the correct 0W-30 low-SAPS oil, adhering to 20,000 km service intervals, and ensuring regular DPF/AdBlue system maintenance. With proper care, these engines can exceed 150,000 km without major issues. Neglecting any of these can lead to very expensive emissions system repairs.
The top issues are low-pressure EGR valve/cooler failure, DPF clogging (from short trips), AdBlue system faults (crystallization or sensor failure), and turbo actuator wear. These are well-documented in PSA service information. The timing chain and bottom end are generally very robust.
The RHZ was primarily used in the later Phase 2 Peugeot 308 II (1.6 BlueHDi 180 GT), the second-generation Peugeot 508 II (2.0 BlueHDi 180 GT), and the second-generation Peugeot 3008 II (2.0 BlueHDi 180 GT Line). It was also fitted to the Citroën C5 Aircross. It's the 177 PS high-output variant of the DW10 family with advanced Euro 6 emissions tech.
Yes, it has good tuning potential. A simple ECU remap can safely yield 20-30 kW gains. More extensive modifications are limited by the complex emissions systems; removing or disabling the EGR or DPF is illegal for road use in most regions. The bottom end is robust, making it a solid base for a legal stage 1 tune.
Real-world fuel economy is very good for its power. Expect around 5.5-6.5 L/100km (43-51 mpg UK) in mixed driving for a 308 GT. Highway cruising can see figures closer to 4.5 L/100km (63 mpg UK). Economy suffers significantly if the DPF is clogged or the engine is misfiring.
Yes, absolutely. The RHZ is an interference engine. If the timing chain were to fail (though extremely rare), the pistons would collide with the open valves, causing severe internal damage. Fortunately, the chain is designed to last the engine's lifetime with proper oil maintenance.
Peugeot mandates oil meeting the PSA B71 2290 specification, specifically a 0W-30 low-SAPS (C2/C3) full synthetic oil. Using the correct oil is vital for protecting the dual DPF system and ensuring the longevity of the timing chain and emissions components. ACEA C2 or C3 rated oils are suitable equivalents.
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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