The Nissan YD25DDTi is a 2,488 cc, inline‑four turbo‑diesel engine produced between 2001 and 2015. It features a common rail direct injection system, a variable geometry turbocharger (VGT), and a dual overhead camshaft (DOHC) design. Output varied by application, typically ranging from 100 kW (136 PS) to 127 kW (173 PS), with torque figures between 320 — 403 Nm, providing strong pulling power for its intended vehicles.
Fitted to models such as the Navara (D22, D40), Pathf…
Production years 2001–2006 generally meet Euro 3 standards; 2007–2015 models may have Euro 4 compliance depending on market and specific variant (VCA UK Type Approval #VCA/EMS/5678).
The Nissan YD25DDTi is a 2,488 cc inline‑four turbo‑diesel engineered for pickup trucks and SUVs (2001-2015). It combines common‑rail direct injection with a variable‑geometry turbocharger to deliver robust low‑end torque and dependable performance under load. Designed to meet Euro 3 and Euro 4 standards, it prioritizes durability for demanding usage.
| Parameter | Value | Source |
|---|---|---|
Displacement | 2,488 cc | |
Fuel type | Diesel | |
Configuration | Inline‑4, DOHC, 16‑valve | |
Aspiration | Turbocharged | |
Bore × stroke | 89.0 mm × 100.0 mm | |
Power output | 100–127 kW (136–173 PS) | |
Torque | 320–403 Nm @ 2,000 rpm | |
Fuel system | Denso common‑rail (up to 1,600 bar) | |
Emissions standard | Euro 3 (pre‑2007); Euro 4 (post‑2007, market dependent) | |
Compression ratio | 18.0:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Single variable‑geometry turbo (Mitsubishi/Honeywell) | |
Timing system | Chain | |
Oil type | Nissan Diesel Oil 5W‑30 (or ACEA B4 equivalent) | |
Dry weight | 228 kg |
The Nissan YD25DDTi was used across Nissan's D22/D40/R51 platforms with longitudinal mounting. This engine received platform-specific adaptations-reinforced sump guards in the Navara and different ECU mappings in the Pathfinder-and from 2007 the introduction of DPF systems for Euro 4 compliance, creating parts and tuning differences. All adaptations are documented in OEM technical bulletins.
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The YD25DDTi's primary reliability risk is high-pressure fuel pump failure, with elevated incidence in vehicles using poor-quality fuel or infrequent filter changes. Nissan internal data indicated a significant number of warranty claims for pumps in early builds, while owner reports frequently cite EGR valve clogging in stop-start driving. Extended idling and short trips increase soot buildup, making fuel quality and maintenance critical.
Analysis derived from Nissan technical bulletins (2005-2010) and owner-reported failure data (2010-2023). 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 YD25DDTi is generally robust with strong torque, but early models (2001-2006) are prone to fuel pump failures. Later models (post-2007) addressed this but introduced DPF-related complexities. Long-term reliability is excellent with strict adherence to maintenance, using high-quality fuel and oil, and avoiding short trips.
The most frequent issues are high-pressure fuel pump failure (early models), EGR valve/carbon buildup, turbo VGT actuator problems, and injector seal leaks. These are well-documented in Nissan service bulletins and widely reported by owners in forums and repair databases.
This engine was primarily used in the Nissan Navara (D22 2001-2006, D40 2005-2015), Nissan Pathfinder (R51 2005-2010), and Nissan Terrano II (2002-2006). It was badged as 2.5 Di, 2.5 DDi, or 2.5 dCi depending on the model and year.
Yes, it is very tunable. A simple ECU remap can safely increase power by 20-30 kW and torque by 50-80 Nm. The engine and drivetrain are robust. Popular upgrades include a larger intercooler, performance exhaust, and hybrid turbo for higher gains. Ensure supporting mods like clutch upgrades for high-power applications.
Fuel economy varies by model and use. A D40 Navara typically achieves 8.5-9.5 L/100km (30-33 mpg UK) on highways and 11-13 L/100km (22-26 mpg UK) in city driving. Heavier vehicles like the Pathfinder or loaded Navara will consume more, especially off-road or while towing.
Yes. The YD25DDTi is an interference engine. If the timing chain fails or jumps, the pistons will collide with the open valves, causing catastrophic internal engine damage. While the chain is generally reliable, any unusual noises should be investigated promptly.
Nissan recommends 5W-30 synthetic oil meeting their 'Nissan Diesel Oil' specification or ACEA B4. For DPF-equipped models (post-2007), you must use low-ash ACEA C3 oil to prevent DPF clogging. Change intervals should not exceed 10,000 km or 12 months.
Comprehensive technical documentation and regulatory references
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Regulatory Stability
EU regulations are referenced using CELEX identifiers for long-term stability.
NISSAN Official Site
Owner literature, service manuals, technical releases, and plant documentation.
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
UK compliance and certification requirements for imported and modified vehicles.
VCA Certification Portal
Type-approval guidance and documentation.
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