Engine BMW M54B25

The volume of the M54B25 engine is 2494 cc (2.5 liters). The power of the unit at 6000 rpm was 192 hp. The torque at 3500 rpm is 245 Nm. The piston stroke is 75 mm, the cylinder diameter is 84 mm. The engine is equipped with a Double VANOS variable valve timing system.

Specifications

Manufacturer	Munich Plant
Also called	M54
Production years	2000-2006
Cylinder block alloy	aluminum
Fuel system	injector
Configuration	inline
Number of cylinders	6
Valves per cylinder	4
Piston stroke, mm	75
Cylinder bore, mm	84
Compression ratio	10.5
Displacement, cc	2494
Power output, hp	192/6000
Torque output, Nm / rpm	237/3500
Fuel type	95
Euro standards	Euro 3-4
Weight, kg	~130
Fuel consumption, L/100 km — city — highway — combined	14.0 7.0 9.4
Oil consumption, gr/1000 km	up to 1000
Recommended engine oil	5W-30 / 5W-40
Engine oil capacity, liter	6.5
Oil change interval, km	10000
Normal engine operating temperature, °C	~95
Engine lifespan, km — official information — real	— ~300

Frequent problems

With long-term operation, even reliable BMW M54B25 engines can experience problems with overheating, misfiring, and high oil consumption.

If the engine overheats, see if the radiator needs to be cleaned, check the condition of the thermostat and the radiator cap. Helps to expel air from the cooling system.

High oil consumption in engines is associated with coking of the piston rings. We need to put on new rings. Also check the crankcase ventilation valve, it may need to be replaced.

When misfires are noticeable, the reason is the hydraulic lifters that need to be replaced.

If the red oil light is constantly on, you need to check the oil pump and oil cup. Another common problem is the failure of the DPRV. It should be borne in mind that the thread under the cylinder head is not highly reliable.

Timely diagnostics and replacement of worn parts will ensure the convenience and reliability of engine operation.