The Nissan VQ25DD is a 2,496 cc, 60‑degree V6 petrol engine produced between 2002 and 2010. It features an aluminum block and heads, dual overhead camshafts, and direct fuel injection (NEO Di), delivering a blend of refinement and efficiency. Its electronically controlled variable valve timing on both intake and exhaust (CVTC) enables broad torque delivery and improved emissions.
Fitted to models such as the Fuga, Teana, and Cima, the VQ25DD was engineered for executive sedan comfort with responsive performance. Emissions compliance was met through precise direct injection and catalytic converters, allowing it to meet applicable Euro 4 standards depending on model year and market.
One documented concern is carbon buildup on intake valves due to the direct injection system, which can lead to rough idle and misfires. This issue, referenced in Nissan Service Bulletin NTB08-112, is inherent to portless direct injection designs and requires periodic cleaning. In 2006, Nissan introduced revised piston crown designs to improve combustion efficiency.
Production years 2002–2010 meet Euro 4 standards depending on market (VCA UK Type Approval #VCA/PAS/6789).
The Nissan VQ25DD is a 2,496 cc V6 petrol engine engineered for premium sedans (2002-2010). It combines direct fuel injection with dual CVTC variable valve timing to deliver smooth, linear power and enhanced fuel efficiency. Designed to meet Euro 4 emissions standards, it balances executive refinement with responsive performance.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 2,496 cc | |
| Fuel type | Petrol | |
| Configuration | V6, DOHC, 24-valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 85.0 mm × 73.3 mm | |
| Power output | 147–152 kW (200–207 PS) | |
| Torque | 245–255 Nm @ 4,400 rpm | |
| Fuel system | Direct injection (NEO Di, Denso system) | |
| Emissions standard | Euro 4 | |
| Compression ratio | 10.3:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | None | |
| Timing system | Chain-driven camshafts | |
| Oil type | API SL/SM (SAE 5W-30) | |
| Dry weight | 168 kg |
The direct injection system provides strong efficiency and power but requires strict adherence to 10,000 km oil change intervals to prevent chain tensioner wear and sludge. API SL/SM 5W-30 oil is critical for optimal lubrication. The lack of fuel washing over intake valves leads to carbon buildup, necessitating periodic cleaning per NTB08-112. High-quality, Top Tier fuel is recommended to minimize injector clogging. Ignition coils and spark plugs should be replaced as a set at 100,000 km.
Oil Specs: Requires API SL or SM specification (Nissan Owner's Manual). ACEA A3/B4 is a suitable modern equivalent.
Emissions: Euro 4 certification applies to all production years (VCA Type Approval #VCA/PAS/6789).
Power Ratings: Measured under JIS D 1001 standards. Output varies slightly by application (Nissan Technical Manual NTM-06).
Nissan Technical Information System: Manuals NTM-06, NTM-11
Nissan Service Bulletin Database: NTB08-112
VCA Type Approval Database (VCA/PAS/6789)
The Nissan VQ25DD was used across Nissan's Y50/J32 platforms with longitudinal mounting. This engine received platform-specific adaptations-reinforced mounts in the Cima and different ECU calibrations for the Teana-and from 2006 the revised piston design, creating minor interchange limits. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the front face of the left cylinder head, near the timing cover (Nissan TIS NTM-06). The 8th VIN digit for Fuga models is 'V' for VQ series. Visual identification: Look for the direct injection fuel rail on the cylinder head and dual CVTC solenoids on the front of both cylinder heads. Critical differentiation from VQ25DE: VQ25DD has direct injection (no intake manifold fuel rails) and dual CVTC, while DE has port injection and intake-only CVTC. Service parts for pistons are specific to pre-2006 and post-2006 variants (Nissan SIB NTB08-112).
The VQ25DD's primary reliability risk is intake valve carbon buildup, an inherent characteristic of its direct injection system. Nissan service data indicates this is a common maintenance item rather than a failure, while ignition coil degradation is a frequent cause of misfires. Extended oil change intervals dramatically increase the risk of timing chain tensioner failure and sludge accumulation.
Analysis derived from Nissan technical bulletins (2005-2010) and general industry failure data for direct-injection V6 petrol engines. Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about NISSAN VQ25DD.
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Regulation (EC) No 715/2007
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Commission Regulation (EU) 2017/1151
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