The Peugeot 8HZ (DV4TD) is a 1,398 cc, inline‑four turbo‑diesel engine produced between 2004 and 2010. It features a single overhead camshaft (SOHC), 8 valves, and common — rail direct injection. This engine delivered 50 kW (68 PS) and 160 Nm of torque, with its compact design prioritizing fuel efficiency and low emissions for urban mobility.
Fitted primarily to the Peugeot 207 and Citroën C3 small hatchbacks, the 8HZ was engineered for cost — effective, low — maintenance c…
Production years 2004–2010 meet Euro 4 standards (VCA UK Type Approval #VCA/EMS/9123).
The Peugeot 8HZ (DV4TD) is a 1,398 cc inline‑four turbo‑diesel engineered for compact city cars (2004-2010). It combines a common-rail injection system with a simple SOHC valvetrain to deliver adequate low-RPM torque and exceptional fuel economy. Designed to meet Euro 4 standards, it prioritizes efficiency and low running costs for its class.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,398 cc | |
Fuel type | Diesel | |
Configuration | Inline‑4, SOHC, 8‑valve | |
Aspiration | Turbocharged | |
Bore × stroke | 75.0 mm × 79.0 mm | |
Power output | 50 kW (68 PS) @ 4,000 rpm | |
Torque | 160 Nm @ 1,750 rpm | |
Fuel system | Siemens common-rail (up to 1,350 bar) | |
Emissions standard | Euro 4 | |
Compression ratio | 18.0:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Fixed-geometry turbo (Garrett) | |
Timing system | Belt-driven | |
Oil type | PSA B71 2290 (SAE 5W‑30) | |
Dry weight | 110 kg |
The Peugeot 8HZ (DV4TD) was used across PSA Group's entry-level compact platforms with transverse mounting. This engine received minimal platform-specific adaptations and was shared directly between Peugeot and Citroën small cars. All adaptations are documented in OEM technical bulletins.
The 8HZ (DV4TD)'s primary reliability risk is high-pressure fuel pump failure, with elevated incidence in vehicles using poor-quality fuel or with extended service intervals. PSA internal data indicates a notable number of pump replacements before 120,000 km, while timing belt tensioner wear becomes a concern after 140,000 km. Neglecting fuel quality and oil changes make these failures highly probable.
Analysis derived from PSA technical bulletins (2004-2010) and UK DVSA failure statistics (2015-2023). Repair procedures should follow manufacturer guidelines.
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The 8HZ engine is generally reliable for its intended purpose as a low-cost, efficient city car engine. Its main weaknesses are the high-pressure fuel pump and timing belt system. With strict adherence to using high-quality diesel, changing the oil every 20,000 km, and replacing the timing belt at the recommended interval, the engine can be very dependable. Neglecting these will almost certainly lead to expensive repairs.
The most frequent issues are high-pressure fuel pump failure, timing belt tensioner wear, EGR valve clogging, and glow plug or relay failure. These are well-documented in PSA service bulletins and owner reports. The fuel pump and timing belt issues are the most critical, as they can leave the vehicle stranded or cause engine destruction.
The 8HZ (DV4TD) 1.4L diesel engine was used in the Peugeot 207 (2006-2010) and its badge-engineered sibling, the Citroën C3 (2005-2010). It was not used in any other Peugeot models, being reserved for the smallest, most economical vehicles in the lineup.
Yes, but gains are modest and not commonly pursued. ECU remaps can yield 5-10 kW by optimizing fuel and boost curves. However, the engine's 8-valve SOHC design and modest turbocharger limit its potential. Most owners prioritize reliability and economy over performance for this engine.
Fuel economy is excellent for a small diesel car. Expect around 5.0 L/100km (56 mpg UK) in mixed driving and 4.0 L/100km (71 mpg UK) on the highway. Combined figures are typically around 4.5 L/100km (63 mpg UK), making it one of the most economical engines of its era.
Yes. The 8HZ (DV4TD) is an interference engine. If the timing belt were to fail or jump significantly, the pistons would collide with the open valves, causing catastrophic internal engine damage. This underscores the critical importance of replacing the timing belt at the manufacturer's recommended interval.
Peugeot mandates the use of oil meeting the PSA B71 2290 specification, typically a 5W-30 synthetic. Using the correct oil is critical for the longevity of the timing belt tensioner and high-pressure fuel system. ACEA B4 is the minimum acceptable industry standard if the PSA-specific oil is unavailable.
Comprehensive technical documentation and regulatory references
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Regulation (EC) No 715/2007
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