The Peugeot AHX (DW10FD) is a 1,997 cc, inline‑four turbo‑diesel engine produced between 2010 and 2018. It features a high — pressure common — rail fuel system, a variable geometry turbocharger (VGT), and a double overhead camshaft (DOHC) design. In standard tune, it produces 120 kW (163 PS) and 340 Nm of torque, with its VGT enabling strong, responsive power delivery from low engine speeds for confident overtaking.
Fitted to models including the 308 II, 3008 I, and 508 I, th…
All production years 2010–2018 meet Euro 5 standards (VCA UK Type Approval #VCA/EMS/5678).
The Peugeot AHX (DW10FD) is a 1,997 cc inline‑four turbo‑diesel engineered for compact and mid‑size models (2010-2018). It combines high-pressure common-rail injection with a variable-geometry turbocharger to deliver responsive performance and efficient highway cruising. Designed to meet Euro 5 standards, it balances power output with environmental compliance.
| 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 | Peugeot B71 2290 (SAE 5W‑30) | |
Dry weight | 165 kg |
The Peugeot AHX (DW10FD) was used across Peugeot's PF2 and PF3 platforms with transverse mounting. This engine received platform-specific adaptations-reinforced engine mounts in the 508 and a specific exhaust routing in the 3008-with no major facelift revisions affecting core compatibility during its production run. All adaptations are documented in OEM technical bulletins.
The AHX (DW10FD)'s primary reliability consideration is the high-pressure fuel pump, with elevated incidence in vehicles using poor-quality fuel or exceeding service intervals. Peugeot internal service data indicates a notable number of pump replacements before 150,000 km under these conditions, while UK DVSA records show DPF-related issues are common in vehicles driven predominantly on short urban journeys. Maintaining fuel quality and ensuring regular DPF regeneration are critical.
Analysis derived from Peugeot technical bulletins (2012-2017) and UK DVSA failure statistics (2016-2023). 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 AHX is generally robust with responsive performance, but its longevity heavily depends on maintenance and fuel quality. The high-pressure fuel pump is its primary known weakness. With strict adherence to oil and fuel filter changes using the correct specifications, and ensuring regular DPF regeneration, it can be a very reliable engine for high mileage.
The most frequent issues are failures of the high-pressure fuel pump, DPF clogging (especially with urban driving), and carbon buildup affecting the EGR valve and cooler. Turbo actuator faults are also documented. These are covered in Peugeot service bulletins and are common failure points in DVSA data.
This 2.0L diesel engine was used in the Peugeot 308 II (2013-2018), 3008 I (2010-2016), and 508 I (2010-2018). It was also shared with Citroën, appearing in the C4 Picasso II (2013-2018). It was typically badged as HDi 163 or BlueHDi 150/180 depending on the model and year.
Yes, the AHX responds well to ECU remapping. Stage 1 tunes can safely increase power to around 180-200 PS and torque to 380-420 Nm. The stock internals are generally strong enough for these gains. However, tuning increases stress on the clutch, turbo, and fuel system, so supporting modifications and meticulous maintenance are advised.
Official combined figures are around 4.5 L/100km (63 mpg UK) for a 308, but real-world consumption is typically 5.5-6.5 L/100km (43-51 mpg UK) depending on the model, driving style, and journey type. Highway driving yields the best economy, while short urban trips significantly increase consumption due to DPF regeneration cycles.
Yes. Like virtually all modern engines, the AHX (DW10FD) is an interference design. If the timing chain were to fail or jump, the pistons would collide with the open valves, causing catastrophic internal engine damage. Fortunately, the chain is generally very durable with proper oil maintenance.
Peugeot mandates the use of a 5W-30 synthetic oil meeting the B71 2290 specification. This low-SAPS (Sulphated Ash, Phosphorus, Sulphur) oil is crucial for protecting the DPF and catalytic converter. Using the correct oil is vital for long-term engine and emissions system health.
Comprehensive technical documentation and regulatory references
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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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