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Nissan QR25DE 2.5L Engine Review

QR25DE 2.5L Engine

The 2.5-liter QR25DE engine is technically the copy of the QR20DE, except a few details.

The engine has another crankshaft, and now engine stroke is 100 mm (2.0-liter engine stroke is 80.3 mm). The connecting rods were shortened. That allowed to increase the engine displacement to 2.5 liters with the same cylinder bore 89 mm. That made this engine more torque. However, that also brings more stress on engine cylinders itself, on piston rings and rods. The engine warranty is shorter than two-liter brother had, and the problem of high oil consumption is more common for the QR25DE.

Some improvements were made in 2007. The intake receiver/manifold was modified. The engine got new pistons and reinforced connecting rods. The balancing system was moved slightly to a central location in the block. Also, the engine was equipped with new camshafts. The engine block still is aluminum like it was.

Engine Specs

Manufacturer
Nissan Shatai Kyushu
Production years
1999-present day
Cylinder block material
Aluminum
Cylinder head material
Aluminum
Fuel type
Gasoline
Fuel system
Electronic fuel injection
Configuration
Inline
Number of cylinders
4
Valves per cylinder
4
Valvetrain layout
DOHC
Bore, mm
89.0
Stroke, mm
100.0
Displacement, cc
2488
Type of internal combustion engine
Four-stroke, naturally aspirated
Compression Ratio
9.5 (10.5)
Power, hp
152-182/6000
Torque, lb ft
173-180/4000
Engine weight
Firing order
1-3-4-2
Engine oil weight
0W-20, 5W-30
Engine oil capacity, liter
5.1
Oil change interval, mile
10,000
Applications
Nissan Teana, Nissan X-Trail, Nissan Murano, Nissan Rogue, Nissan Bassara, Nissan Serena, Nissan Sentra, Nissan Presage, Nissan Altima, Nissan Frontier, Nissan Sentra SE-R, Suzuki Equator

Nissan QR25DE Engine Problems and Reliability

We can say what the QR25DE has almost all potential issues as the QR20DE has, but this engine can consume more engine oil at the end of its life. There are more vibrations and run-out processes.

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