The Citroën 9HR (DV6C) is a 1,560 cc, inline-four turbocharged diesel engine produced between 2004 and 2018. It belongs to the PSA DV family (also known as the Ford/PSA DW10 series), co-developed with Ford for transverse applications in compact and mid-size vehicles. Featuring a cast-iron block, aluminium head, and common-rail direct injection, it delivers strong low-end torque with improved refinement over earlier HDi units. In standard tune, it produces 80 kW (109 PS) and 240 Nm of torque.
Fitted to models such as the Citroën C4, C5, and Berlingo, as well as the Peugeot 307 and 308, the DV6C was engineered for balanced performance, fuel economy, and emissions compliance. It prioritizes smooth drivability and long-distance comfort, making it ideal for fleet and family use. Emissions compliance was achieved through exhaust gas recirculation (EGR), diesel particulate filter (DPF), and selective catalytic reduction (SCR) in later models, meeting Euro 4 and Euro 5 standards.
One documented concern is high-pressure fuel pump (HPFP) failure due to internal wear, particularly in high-mileage or poorly maintained units. This issue, highlighted in PSA Service Bulletin SIB-ENG-2010-05, can lead to hard starting, power loss, and engine shutdown. From 2010, revised lubrication pathways and updated fuel filtration were introduced to improve pump longevity in later production runs.
Production years 2004–2009 meet Euro 4 standards; 2010–2018 models comply with Euro 5 (VCA UK Type Approval #VCA/EMS/9012).
The Citroën 9HR (DV6C) is a 1,560 cc inline-four turbocharged diesel engine designed for compact and mid-size vehicles (2004–2018). It combines common-rail injection with a variable geometry turbocharger to deliver responsive torque and improved efficiency. Designed to meet Euro 4 and Euro 5 emissions standards, it balances performance with low running costs.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,560 cc | |
| Fuel type | Diesel | |
| Configuration | Inline-4, DOHC, 16-valve | |
| Aspiration | Turbocharged | |
| Bore × stroke | 75.0 mm × 88.3 mm | |
| Power output | 80 kW (109 PS) @ 4,000 rpm | |
| Torque | 240 Nm @ 1,750–2,500 rpm | |
| Fuel system | Bosch CRS 2-20 common-rail (up to 1,600 bar) | |
| Emissions standard | Euro 4 (2004–2009); Euro 5 (2010–2018) | |
| Compression ratio | 16.7:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | Garrett variable geometry turbo (VNT25) | |
| Timing system | Rubber timing belt (interval: 120,000 km or 8 years) | |
| Oil type | Total Rubia TIR 5W-30 | |
| Dry weight | 148 kg |
The common-rail VGT setup provides strong low-RPM torque ideal for urban and motorway driving but requires adherence to 120,000 km timing belt intervals to prevent valve/piston contact. Total Rubia TIR 5W-30 oil is critical due to its low-SAPS formulation and compatibility with DPF/SCR systems. The Bosch HPFP demands ultra-low-sulfur diesel (EN 590) to prevent internal wear; contaminated fuel accelerates pump failure. DPF regeneration requires regular highway runs to prevent clogging. Post-2010 models feature revised fuel pump lubrication and enhanced EGR cooling, improving reliability. Cold-start idling should be minimized to reduce EGR soot buildup.
Oil Specs: Requires Total Rubia TIR 5W-30 or equivalent meeting PSA B71 2300. Supersedes ACEA C3.
Emissions: Euro 4 applies to 2004–2009 models; Euro 5 certification confirmed for 2010–2018 (VCA Type Approval #VCA/EMS/9012).
Power Ratings: Measured under ECE R85 standards. Output requires EN 590 diesel for optimal injection performance (PSA TIS DV-ENG-04).
PSA Technical Information System (TIS): Docs DV-ENG-01, DV-ENG-02, SIB-ENG-2010-05
VCA Type Approval Database (VCA/EMS/9012)
ISO 8854: Road vehicles — European emissions standards
The Citroën 9HR (DV6C) was used across Citroën's B/C-segment platforms with transverse mounting and shared with Peugeot under the DV engine program. This engine received platform-specific calibrations-adapted EGR flow in the C5 and revised DPF regeneration logic in the Grand C4 Picasso-and from 2010 the facelifted C4 II adopted Euro 5-compliant SCR injection and updated ECU mapping, creating interchange limits. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped vertically on the left-side engine block near the transmission bellhousing (PSA TIS DV-ENG-05). The 8th VIN digit indicates engine type ('C' for DV6C). Pre-2010 models have black plastic timing covers with standard EGR routing; post-2010 units feature SCR injection near the exhaust manifold. Critical differentiation: DV6C uses a Bosch CRS 2-20 common-rail system with Garrett VNT25 turbo, while the earlier DW10TD uses a Delphi system. Service parts require model-year verification—fuel pumps and ECUs from Euro 4 and Euro 5 models are not interchangeable (PSA SIB-ENG-2010-05).
The DV6C's primary reliability risk is high-pressure fuel pump failure on high-mileage or poorly maintained units, with elevated incidence in stop-start urban use. PSA internal quality reports from 2012 indicated a significant number of pre-2010 units requiring HPFP replacement before 150,000 km, while UK DVSA MOT records show increased DPF-related failures in short-trip examples. Extended service intervals and low-quality fuel accelerate degradation, making service adherence and fuel quality critical.
Analysis derived from PSA technical bulletins (2010–2015) and UK DVSA failure statistics (2014–2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about CITROEN 9HR-DV6C.
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