The Peugeot AHZ (DW10CD) is a 1,997 cc, inline‑four turbo‑diesel engine produced between 2010 and 2018. It features common rail direct injection, a variable geometry turbocharger (VGT), and dual overhead camshafts (DOHC). This engine was designed to deliver a balance of 120 kW (163 PS) and 340 Nm of torque, with its high — pressure fuel system enabling strong low — rpm torque for everyday drivability.
Fitted to models such as the 308 II, 508 I, and Partner Tepee, the AHZ (DW10…
Production years 2010–2018 meet Euro 5 standards (VCA UK Type Approval #VCA/EMS/5678).
The Peugeot AHZ (DW10CD) is a 1,997 cc inline‑four turbo‑diesel engineered for compact and mid‑size models (2010-2018). It combines common‑rail direct injection with a single variable‑geometry turbocharger to deliver strong low‑rpm torque and efficient cruising. Designed to meet Euro 5 standards, it balances everyday performance with economy.
| 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 | 120 kW (163 PS) | |
Torque | 340 Nm @ 2,000 rpm | |
Fuel system | Bosch CP4 common‑rail (up to 1,800 bar) | |
Emissions standard | Euro 5 | |
Compression ratio | 16.0:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Single variable‑geometry turbo (Honeywell) | |
Timing system | Chain-driven | |
Oil type | PSA B71 2290 (SAE 5W‑30) | |
Dry weight | 165 kg |
The Peugeot AHZ (DW10CD) was used across Peugeot's PF2/PF3 platforms with transverse mounting. This engine received platform-specific adaptations-reinforced mounts in the 508 and specific ECU mapping in the 308-with no major facelift revisions affecting core compatibility during its production run. All adaptations are documented in OEM technical bulletins.
The AHZ (DW10CD)'s primary reliability risk is high-pressure fuel pump failure, with elevated incidence in vehicles using poor-quality fuel. Peugeot internal reports noted a cluster of pump failures requiring replacement before 100,000 km, while UK DVSA data indicates DPF-related issues are also common in short-trip vehicles. Extended oil change intervals and low-quality diesel make adherence to fuel and oil specifications critical.
Analysis derived from Peugeot technical bulletins (2012-2018) and UK DVSA failure statistics (2015-2023). 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 AHZ offers good performance and economy, but its long-term reliability hinges on using the correct fuel and oil. The high-pressure fuel pump is a known weak point, especially with poor fuel quality. With strict adherence to maintenance schedules and genuine parts, these engines can be very durable beyond 200,000 km.
The most frequent issues are failures of the high-pressure fuel pump (HPFP), clogging of the EGR valve and cooler, and problems with the DPF regeneration system. Turbo actuator faults are also relatively common. These are well-documented in Peugeot service bulletins like 13BZ07A.
This engine was primarily used in the second-generation 308 (2013-2018), facelifted first-generation 508 (2014-2018), and the Partner Tepee (2010-2018). It was also shared with Citroën, appearing in the C4 Picasso II and other PSA Group vehicles under the 2.0 BlueHDi 150/180 designation.
Yes, the AHZ responds well to ECU remapping. Stage 1 tunes can safely increase power to around 180-200 PS and torque to 400+ Nm. The stock internals are robust, but supporting modifications like a larger intercooler are recommended for higher stages. Always use a reputable tuner.
Fuel economy is excellent for its power. In a 308, expect combined figures of around 4.5 L/100km (63 mpg UK). Real-world consumption typically ranges from 5.0-6.0 L/100km (47-56 mpg UK) depending on driving style and conditions, making it very efficient for a 163 PS engine.
Yes. Like virtually all modern engines, the AHZ (DW10CD) is an interference design. If the timing chain fails or jumps, the pistons will collide with the valves, causing catastrophic engine damage. Regular oil changes are crucial for chain longevity.
Peugeot mandates the use of low-SAPS oil meeting the PSA B71 2290 specification, typically a 5W-30 viscosity. This is critical for protecting the DPF and ensuring proper lubrication of the timing chain and fuel pump. Using the wrong oil can lead to expensive damage.
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
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