Engine BMW N20B20 under the hood

Engine BMW N20B20

The four-cylinder N20B20 turbo engine began to be installed on BMW cars in 2011. The engine replaced the N53B25 and N53B30 units. The block of the new motor is made of aluminum alloy and contains two balance shafts. Steel-coated engine cylinders, forged crankshaft with four offset counterweights, 144.35mm long cranks.

The cylinder head of the engine is similar to the N55, with composite camshafts and TVDI direct fuel injection (TVDI), contains the Valvetronic 3 and Double-Vanos system.


Manufacturer BMW Plant Hams Hall
Also called N20
Production years 2011
Cylinder block alloy aluminum
Fuel system injector
Configuration inline
Number of cylinders 4
Valves per cylinder 4
Piston stroke, mm 90.1
Cylinder bore, mm 84
Compression ratio 10-11
Displacement, cc 1997
Power output, hp 156/5000 / 184/5000 / 218/5500 / 245/5000
Torque output, Nm / rpm 240/1250-4500 / 270/1250-4500 / 310/1350-4800 / 350/1250-4800
Fuel type 95-98
Euro standards Euro 5-6
Fuel consumption, L/100 km
— city
— highway
— combined
Oil consumption, gr/1000 km up to 700
Recommended engine oil 5W-30 / 5W-40
Engine oil capacity, liter 5
Oil change interval, km 10000
Engine lifespan, km
— official information
— real


Frequent problems

Malfunctions in the BMW N20B20 engine are the appearance of vibrations, increased fuel consumption and floating speed.

The main cause of unit vibrations is dirty injectors. In most cases, the problem is resolved quickly.

Engine BMW N20B20If the speed is floating, the condition of the idle valve and throttle valve should be inspected – they can become very dirty and cause a malfunction in the operation of the power unit.

When there is an increase in fuel consumption, the problem may be hidden in a malfunction of the air mass meter. This is one of the main reasons to be ruled out in the first place.

It should be borne in mind that when operating the BMW N20B20 engine, it is better not to save on working fluids. It is advisable to fill up with 98th gasoline and oil recommended by BMW. With regular diagnostics and maintenance, the BMW N20B20 engine will work reliably.

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