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 executiv…
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 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.
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.
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Yes, the VQ25DD is generally very reliable long-term with proper maintenance. Its aluminum construction and chain-driven timing are robust. The main consideration is periodic intake valve cleaning due to its direct injection design. Regular oil changes and timely replacement of ignition coils ensure excellent longevity, often exceeding 250,000 km.
The most common issues are carbon buildup on intake valves (requiring periodic cleaning), ignition coil failures causing misfires, timing chain tensioner rattle, and occasional high-pressure fuel pump failure. These are well-documented in Nissan service bulletins like NTB08-112.
The VQ25DD was primarily used in the premium Fuga/Y50 sedan (2004-2010), the Teana/J32 mid-size sedan (2003-2008), and the luxurious Cima/Y50 limousine (2003-2010). It was a flagship engine for Nissan's executive vehicle lineup in Japan and select Asian markets.
Yes, the VQ25DD responds well to tuning. ECU remaps can yield 15-25 kW gains by optimizing ignition and fuel maps. Bolt-on modifications like a performance exhaust and intake can add another 5-10 kW. Significant power increases are limited by the stock internals and direct injection system, but 220-230 kW is achievable reliably.
Fuel economy is good for a 2.5L V6. Expect around 10.5-12.0 L/100km (26-23 mpg UK) in a Fuga, depending on driving style. Its direct injection system provides better efficiency than port-injected equivalents, though the need for periodic valve cleaning is a maintenance trade-off.
Yes. The VQ25DD is an interference engine. This means if the timing chain were to fail or jump significantly, the pistons can contact the valves, causing severe internal engine damage. This makes regular maintenance of the timing components critical.
Nissan specifies an API SL or SM rated oil, typically SAE 5W-30 for all operating conditions. Using a high-quality full synthetic oil meeting these specifications is highly recommended. Change intervals should not exceed 10,000 km to prevent sludge and wear.
Comprehensive technical documentation and regulatory references
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