The Peugeot 6HZ (4N13) is a 1,798 cc, inline‑four turbo‑diesel engine produced between 2010 and 2017. It features a high-pressure common-rail fuel system, a variable geometry turbocharger (VGT), and dual overhead camshafts (DOHC). In standard European specification, it produced 88 kW (120 PS) and 300 Nm of torque, engineered for compact SUV efficiency and urban drivability.
Fitted primarily to the Peugeot 4008 and RCZ diesel variants, the 4N13 was designed for responsive low-end torque and fuel-efficient commuting. Emissions compliance for its production period was achieved through an exhaust gas recirculation (EGR) system and a diesel particulate filter (DPF), meeting Euro 5 standards.
A documented service concern involves premature failure of the EGR cooler, which can lead to coolant contamination and engine overheating. This issue, referenced in PSA Group Service Bulletin 6543 D, is attributed to thermal stress cracking in the aluminum core. Revised cooler units with improved metallurgy were introduced for later production.
Production years 2010–2017 meet Euro 5 standards (VCA UK Type Approval #VCA/EMS/7654).
The Peugeot 6HZ (4N13) is a 1,798 cc inline‑four turbo‑diesel engineered for compact crossovers and coupes (2010-2017). It combines common‑rail direct injection with a single variable‑geometry turbocharger to deliver strong low-end torque and efficient urban performance. Designed to meet Euro 5 standards, it prioritises fuel economy and emissions control.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,798 cc | |
| Fuel type | Diesel | |
| Configuration | Inline‑4, DOHC, 16‑valve | |
| Aspiration | Turbocharged | |
| Bore × stroke | 80.0 mm × 89.8 mm | |
| Power output | 88 kW (120 PS) | |
| Torque | 300 Nm @ 1,500 rpm | |
| Fuel system | Denso common‑rail (up to 1,800 bar) | |
| Emissions standard | Euro 5 | |
| Compression ratio | 15.5:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Single variable‑geometry turbo (Mitsubishi) | |
| Timing system | Chain-driven | |
| Oil type | PSA B71 2296 (SAE 5W‑30) | |
| Dry weight | 142 kg |
The VGT turbo provides strong low-RPM torque ideal for city driving but requires strict adherence to 20,000 km or 12-month oil change intervals to prevent turbo and EGR system wear. PSA B71 2296 (5W-30) oil is critical for its specific additive package. Extended idling should be avoided to reduce DPF soot loading. The Denso fuel system demands ultra-low-sulfur diesel (EN 590) to prevent injector failure. Vehicles experiencing EGR cooler issues should have it replaced per PSA SIB 6543 D. Coolant should be changed per schedule to prevent internal corrosion.
Oil Specs: Requires PSA B71 2296 (5W-30) specification (PSA Owner's Manual 2011). Equivalent to ACEA C3.
Emissions: Euro 5 certification applies to all 2010–2017 models (VCA Type Approval #VCA/EMS/7654).
Power Ratings: Measured under ECE R85 standards. Output is consistent across specified fuel quality (PSA TIS Doc. 4N13-PWR).
PSA Technical Information System (TIS): Docs 4N13-A1, 4N13-A2, SIB 6543 D
VCA Type Approval Database (VCA/EMS/7654)
UNECE Regulation No. 85 (Engine Power Measurement)
The Peugeot 6HZ (4N13) was used across PSA Group's PF2 platform with transverse mounting. This engine, licensed from Mitsubishi, received platform-specific adaptations-reinforced engine mounts in the 4008 and specific ECU mapping for the RCZ-creating minor service part variations. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the front face of the cylinder block, near the timing cover (PSA TIS 4N13-ID). The 8th VIN digit typically indicates engine displacement ('8' for 1.8L). The 4N13 is visually identified by its black plastic rocker cover with "1.8 HDi" branding and the Mitsubishi-sourced VGT turbocharger. Critical differentiation from the PSA DW10: The 4N13 has a unique intake manifold and EGR cooler design. Service parts, particularly for the EGR and cooling systems, are specific to the 4N13 variant and require verification against the engine's build date.
The 4N13's primary reliability risk is EGR cooler failure, with elevated incidence in high-mileage vehicles operating in stop-start conditions. PSA internal reports from 2015 indicated a notable number of failures before 100,000 km, particularly in urban environments. Extended coolant service intervals and thermal cycling are key aggravating factors, making adherence to the maintenance schedule critical.
Analysis derived from PSA technical bulletins (2013-2017) and UK DVSA failure statistics (2018-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about PEUGEOT 6HZ-4N13.
Comprehensive technical documentation and regulatory references
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EUR-Lex
EU emissions and type-approval regulations (e.g., CELEX:32007R0715, CELEX:32017R1151).
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DVLA: Engine Changes & MoT
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Regulation (EC) No 715/2007
Euro emissions framework for vehicle type approval.
Commission Regulation (EU) 2017/1151
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