Engine BMW N52B30 under the hood

Engine BMW N52B30

The N52B30 ICE debuted in 2004 and was offered in five variants: from 218 to 272 hp. for the European and US market. In 2006 and 2007, the 3.0-liter engine was included in the Ward’s 10 Best Engines list as the best in-line six-cylinder engine. The 218-horsepower version was produced in two versions, with a torque of 270 and 280 Nm and was designated as N52B30 U1.


Manufacturer Munich Plant
Also called N52
Production years 2004-2011
Cylinder block alloy magnesium-aluminum
Fuel system injector
Configuration inline
Number of cylinders 6
Valves per cylinder 4
Piston stroke, mm 88
Cylinder bore, mm 85
Compression ratio 10.7
Displacement, cc 2996
Power output, hp 218/6100
Torque output, Nm / rpm 270/2400-4200
Fuel type 95
Euro standards Euro 5
Weight, kg ~160
Fuel consumption, L/100 km
— city
— highway
— combined
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


Frequent problems

Engine BMW N52B30Malfunctions of the N52B30 engine consist in high oil consumption, the appearance of extraneous sounds and floating speed.

Increased oil consumption is a major problem with N52B30 motors. The reason may be in the valve stem seals. You should also check the state of the KVKG.

If no action is taken at high oil consumption, catalytic converters can clog. To restore the operation of the unit, you need to buy new parts or install flame arresters.

The ticking sound is a feature of engines manufactured before 2009. This does not pose any problems for the power unit.

When the rpm is unstable, you need to check the Valvetronic system, as well as the Vanos valves and the flow meter. With improper maintenance: oil change every 20 thousand kilometers, use of low quality working fluids, Vanos fails. Flushing the system valves sometimes helps. If the problem persists, a replacement is required.

To exclude engine overheating, you should regularly check the cooling system, keep the radiator clean.

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