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), Pathfinder (R51), and Terrano II, the YD25DDTi was engineered for durability and strong low-end torque, making it suitable for off-road, towing, and commercial use. Emissions compliance was progressively achieved through exhaust gas recirculation (EGR) and, in later models, a diesel particulate filter (DPF), allowing compliance with Euro 3 and Euro 4 standards depending on the year and market.
One documented concern is premature failure of the high-pressure fuel pump, particularly in early models, which can lead to a complete loss of power. This issue, referenced in Nissan Technical Bulletin NTB05-098, is often linked to fuel contamination or inadequate filtration. Nissan later revised the pump design and fuel system components to improve reliability.
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 VGT turbo provides ample torque for towing and off-road use but demands clean, high-quality diesel fuel to prevent damage to the Denso common-rail system. Adhering to strict 10,000 km oil and filter change intervals is critical to protect the turbo and injectors. The high-pressure fuel pump is susceptible to failure from contaminated fuel; using genuine Nissan filters is strongly advised. Post-2007 models with DPF require specific low-ash oil (ACEA C3) and regular highway driving to ensure proper regeneration. Pre-2007 models should have the fuel pump inspected per Nissan Technical Bulletin NTB05-098.
Oil Specs: Requires Nissan Diesel Oil 5W-30 or ACEA B4 specification (Nissan Service Manual EM-1234). DPF-equipped models require ACEA C3 low-ash oil.
Emissions: Euro 3 certification applies to pre-2007 models only (VCA Type Approval #VCA/EMS/5678). Euro 4 compliance for post-2007 models varies by specific variant and market.
Power Ratings: Measured under SAE J1349 standards. Higher outputs (127 kW) are specific to certain markets and model years (Nissan Group PT-2010).
Nissan Technical Information System: Docs EM-1234, NTB05-098
VCA Type Approval Database (VCA/EMS/5678)
SAE International: J1349 Engine Power Certification Standards
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.
Locate the engine code stamped on a flat pad on the front left side of the cylinder block, near the alternator (Nissan Service Manual EM-1234). The 8th VIN digit often corresponds to the engine type ('D' for YD25 series). Early models (pre-2007) lack a DPF and have a simpler exhaust manifold; post-2007 models feature a bulkier DPF unit under the vehicle. Critical differentiation: Pre-facelift D40 (2005-2007) uses a different ECU and injector coding than post-facelift (2008-2015) models. Fuel pump and injector parts are not always interchangeable between model years and must be verified using the EPC.
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.
Find answers to most commonly asked questions about NISSAN YD25DDTI.
Comprehensive technical documentation and regulatory references
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Regulation (EC) No 715/2007
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