What type of engine is equipped in this vehicle?

[BuffUpdate]

I would like someone to verify the type of engine in a specific automobile.

I am examining a 2011 523i 3.0, registered on September 8, 2011.


I believe it is a N52, but does anyone have confirmation?
Thank you, everyone!

[Sumoto]

Verify using your vehicle's VIN. Does the vendor not supply the VIN, or are there no local websites that offer the VIN along with the registration plate?

[Sumoto]

https://www.realoem.com/bmw/enUS/select

[Finestey]

It may be either n52 or n53; therefore, it is advisable to proceed as indicated and verify using the VIN number.

[LimeLing]

The European market variant of the vehicle was equipped with the N53B30 engine, whereas the Asian market variant used the N52B25. However, I would recommend verifying the VIN.

[BuffUpdate]

Thank you, I will obtain the VIN and provide an update.

[BuffUpdate]

According to the VIN decoder, it is a N53.

Is that advantageous or disadvantageous?

[Bleakerje]

I believed the N53 was exclusively offered in 25i and 30i variants.
Both engines possess advantages and disadvantages.

[BuffUpdate]

I am examining the 3.0 version.

[Bleakerje]

The 3.0i was marketed as the 25i and 30i. Identical engine, although configured differently at the factory and equipped with a distinct intake manifold.

The N52 utilised port injection and was regarded as highly reliable; nevertheless, it is ageing and requires numerous component replacements.


The N53 was BMW's first direct injection engine and represented a significant advancement. Concerns include the NOx sensor, NOx catalytic converter, injectors, and high-pressure fuel pump. These are notorious for malfunctioning, and the repair costs can be substantial. I have observed individuals acquiring discount N53 vehicles, only to later lament on forums about engine misfiring, with mechanics stating that six new injectors are required. Conduct extensive research prior to making a purchase.

[Markwe]

N53.