[mecheng77]

I thought the 325i uses a 3.0l engine, it states
N52B25, which is a 2.5l and I believe that is for the Canada only 323i??

https://en.wikipedia.org/wiki/BMW_3_Series_(E90)

[Welcome to NBA Jam]

You know you can edit it if you want, right

[mecheng77]

Originally Posted by Welcome to NBA Jam

You know you can edit it if you want, right

Correct, I don't have an account but wanted to confirm first.

[relative4]

In direct response to your general question, no - Wiki is never wrong.

[Yngvejos]

My 325i has a n52b25 engine. Afaik 325i had n52b25 in 2005-2007 in Europe.

[Efthreeoh]

N52 came in 2.5L and 3.0L sizes. The US market cars only got the 3.0L.

[RayLivingston]

BMW has, more than once, rounded the engine size UP in the model number e.g. - the '99-'00 US "325i" actually had a 2.3L engine, and the 335i has a 3.0L engine, and older 745is had 3.5L engines. But I can't think of a single them they've ever rounded DOWN. An E90 with a 3.0L engine would be marketed as a 330i, not a 325i.

Regards,
Ray L.

[Joebie]

Originally Posted by RayLivingston

An E90 with a 3.0L engine would be marketed as a 330i, not a 325i.

Damn, sounds like they misbadged all 500,000 e90 328i's across the entire United States then. Time for a recall.


EDIT: To give you a less sarcastic reply, the reason they call the 328i a 328i despite having a 3.0L engine is just a historic namesake thing. the last two numbers USED to be a good representation of the displacement, but for about 15-20 years now its just been a bigger-is-better type of naming scheme having nothing to really do with displacement.

[lowrydr310]

Originally Posted by Yngvejos

My 325i has a n52b25 engine. Afaik 325i had n52b25 in 2005-2007 in Europe.

My 2006 325i (USA market) has a N52B30. In the United States, the E90 325i was only available in 2006. For 2007, the same model was called the 328i.

Originally Posted by RayLivingston

BMW has, more than once, rounded the engine size UP in the model number e.g. - the '99-'00 US "325i" actually had a 2.3L engine, and the 335i has a 3.0L engine, and older 745is had 3.5L engines. But I can't think of a single them they've ever rounded DOWN. An E90 with a 3.0L engine would be marketed as a 330i, not a 325i.

Regards,
Ray L.

Sorry Ray, that's just incorrect information. My 2006 325i has a N52B30.

[feuer]

Originally Posted by Joester

Damn, sounds like they misbadged all 500,000 e90 328i's across the entire United States then. Time for a recall.


EDIT: To give you a less sarcastic reply, the reason they call the 328i a 328i despite having a 3.0L engine is just a historic namesake thing. the last two numbers USED to be a good representation of the displacement, but for about 15-20 years now its just been a bigger-is-better type of naming scheme having nothing to really do with displacement.

Since late 90's is "linked" with power output. Two 3.0L will have diferent tunes and will make diferent horse power output, less HP 328i, more HP 330i. Turbo engines especially, new 330i with 2.0L turbo because it makes as much HP as naturally aspirated 330i with 3.0L.

[mecheng77]

Originally Posted by feuer

Since late 90's is "linked" with power output. Two 3.0L will have diferent tunes and will make diferent horse power output, less HP 328i, more HP 330i. Turbo engines especially, new 330i with 2.0L turbo because it makes as much HP as naturally aspirated 330i with 3.0L.

Thanks guys for clearing it up. If someone has a wiki account feel free to correct it :

[Efthreeoh]

Originally Posted by RayLivingston

BMW has, more than once, rounded the engine size UP in the model number e.g. - the '99-'00 US "325i" actually had a 2.3L engine, and the 335i has a 3.0L engine, and older 745is had 3.5L engines. But I can't think of a single them they've ever rounded DOWN. An E90 with a 3.0L engine would be marketed as a 330i, not a 325i.

Regards,
Ray L.

Just to bust your chops... in a friendly way...

The USA market E30 325e and es had the M20B27 6-banger, which was a 2.7L version of the M20. In 1988, thank God, BMW dropped the "eta" version of the M20 in the USA, and adopted the wonderful M20B25 Bosch Motronic injected M20.

BMW 3-series model numbers roughly eluded to displacement, but with the advent of the E46, BMW went completely to a marketing-based model number scheme where model numbers represented the level of equipment in the model, so the numbers are now a "trim level" rather than representing engine displacement or horsepower level; but generally the higher model number means higher horepower.

The only way to determine BMW engine displacement is the last two digits of the engine model designator.

[Krisbiker2]

Afaik engine displacement digits relate to power mostly for German tax reasons- the 3L diesel for example comes rated at 2.5, 3 and 3.5 in Europe depending on power output. Trim levels bear no resemblance to these.