The Peugeot RHZ (DW10ATED) is a 1,997 cc, inline‑four turbo‑diesel engine produced between 2001 and 2006. It features an aluminium block and head with double overhead camshafts (DOHC) and 16 valves. This unit delivered 80 kW (109 PS) and 250 Nm of torque, utilising a fixed — geometry turbocharger for dependable low — end response and efficient cruising.
Fitted to models such as the Peugeot 406, 607, and Citroën C5, the RHZ was engineered for refined, long — distance comfort a…
Production years 2001–2006 meet Euro 3 standards .
The Peugeot RHZ (DW10ATED) is a 1,997 cc inline‑four turbo‑diesel engineered for mid-size sedans and estates (2001-2006). It combines high-pressure common-rail direct injection with a fixed-geometry turbocharger to deliver robust low-RPM torque and smooth power delivery. Designed to meet Euro 3 standards, it prioritises durability and cost-effective ownership.
| 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 | 80 kW (109 PS) @ 4,000 rpm | |
Torque | 250 Nm @ 1,750 rpm | |
Fuel system | Siemens VDO high-pressure common-rail (up to 1,350 bar) | |
Emissions standard | Euro 3 | |
Compression ratio | 18.0:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Fixed-geometry turbo (Garrett) | |
Timing system | Chain-driven (front-mounted) | |
Oil type | PSA B71 2290 (SAE 10W‑40) | |
Dry weight | 142 kg |
The Peugeot RHZ (DW10ATED) was used across PSA Group's PF3 platform with transverse mounting and shared with Citroën. This engine received minor ECU mapping variations between models-for instance, slightly different boost curves in the 406 versus the 607-but core mechanical components remain interchangeable. All adaptations are documented in OEM technical bulletins.
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The RHZ (DW10ATED)'s primary reliability risk is high-pressure fuel pump failure, with elevated incidence in engines subjected to poor fuel quality. Peugeot Technical Note 0118 B documents this issue, while general owner feedback highlights injector seal leaks as a common cause of performance issues. Neglecting preventative maintenance on the fuel system makes adherence to the service schedule critical.
Analysis derived from Peugeot technical bulletins (2001-2006) and general owner-reported failure data. 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 with meticulous maintenance, particularly regarding fuel quality and filter changes. Its main weakness is the high-pressure fuel pump, which is sensitive to contamination. Many examples exceed 200,000 km with proper care, making it a durable engine for its time, though it demands attention to preventative maintenance.
The most critical issues are high-pressure fuel pump failure and injector seal leaks. Other frequent problems include clogged EGR valves and sticking turbocharger wastegates. These are well-documented in Peugeot service notes and require prompt attention to avoid costly damage.
This 2.0L diesel engine was primarily used in the Peugeot 406 (2001-2004) and 607 (2001-2006). It was also shared with Citroën, powering the C5 (2001-2004). It's a key engine in PSA's early-2000s mid-size car lineup.
Aftermarket ECU tuning is common on the RHZ-DW10ATED platform, but increasing boost or altering engine parameters accelerates component wear, impacts emissions compliance, and may void vehicle warranties. Any modifications should be evaluated carefully by a qualified specialist.
Real-world fuel economy is excellent. In a Peugeot 406, expect around 6.5 L/100km (43 mpg UK) in mixed driving. Highway cruising can return 5.0-5.5 L/100km (51-56 mpg UK). City driving will be higher, around 8.5 L/100km (33 mpg UK). Figures vary with driving style and vehicle condition.
Yes, absolutely. It is an interference engine. If the timing chain jumps or breaks (though rare), the pistons will collide with the open valves, causing severe internal damage. While the chain is generally robust, any unusual noise should be investigated.
Peugeot specifies oil meeting the PSA B71 2290 standard. A high-quality 10W-40 semi-synthetic or fully synthetic oil is recommended. Using the correct specification is crucial for engine longevity. Change intervals should not exceed 20,000 km or 12 months.
Comprehensive technical documentation and regulatory references
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Regulatory Stability
EU regulations are referenced using CELEX identifiers for long-term stability.
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
Type-approval guidance and documentation.
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