[andymj]

Why does the 3/4 series get the lowest performance out of the x40i engine ?

1/2 series (I know its the M140i - but still) .. is 340bhp
3/4series is 326bhp
5 series (coming in 2017, but still using the B58 engine) is 335bhp.

Do BMW only give the 3/4 Series the 40i engine with the lower bhp to ensure a larger gap to the M3/M4 ?

Interestingly, (or not depending on your POV), the 7 Series also only gets 326BHP out of the x40i B58 engine.

[225]

At a guess the higher power in the 1/2 40i is to make it mperformance specific and the new 5 series gets an updated version which i imagine will go into the new 340i g series.

[teaston]

Originally Posted by 225

At a guess the higher power in the 1/2 40i is to make it mperformance specific and the new 5 series gets an updated version which i imagine will go into the new 340i g series.

This pretty much nails it!

Also there's going to be an M340i, so they want to leave the higher power for that I should think.

[PurpleTT]

Originally Posted by teaston

Also there's going to be an M340i

Any ideas as to when this might be my old fruit?

[teaston]

Originally Posted by PurpleTT

Any ideas as to when this might be my old fruit?

A while after the G20 3 series comes out I should think, so probably 2019.

[ukbeemerboy]

Originally Posted by teaston

Also there's going to be an M340i, so they want to leave the higher power for that I should think.

Where has this info been sourced from?

[225]

Originally Posted by ukbeemerboy

Where has this info been sourced from?

It was an article on the front page for one. Seems inevitable as well as im sure the new m3 will be knocking on at least 450bhp if this one has 426 odd so plenty of space between the two.

Just hope they make a touring varient.

[G82Dude]

Originally Posted by ukbeemerboy

Where has this info been sourced from?

+1 - not seen anything to indicate an M340/M440 in coming...!

Wouldn't make any sense with the current line up; 14HP isn't going to make a lot of difference?! The 1/2 series engines stop(ped) at 28 and 30i and they never had a basic 35/40i version (ignoring the gen 1 135i), so makes sense. Just doesn't with a 3/4 series. Unless of course they tweak it to 360+HP...

[SkyJawa]

because the 3er is too common

[SkyJawa]

Originally Posted by F82Dude

+1 - not seen anything to indicate an M340/M440 in coming...! And is 14HP going to make a lot of difference?!

Not just about power, but weight too!

[G82Dude]

Originally Posted by SkyJawa

Not just about power, but weight too!

Exactly. So a fairly pointless car with a 14HP upgrade...?! And wouldn't it compete badly with their own MPPK with a 35HP increase?! Gotta be 360 min. Just snaffle the engine from the M2!

[225]

Originally Posted by F82Dude

+1 - not seen anything to indicate an M340/M440 in coming...!

Wouldn't make any sense with the current line up; 14HP isn't going to make a lot of difference?! The 1/2 series engines stop(ped) at 28 and 30i and they never had a basic 35/40i version (ignoring the gen 1 135i), so makes sense. Just doesn't with a 3/4 series. Unless of course they tweak it to 360+HP...

We are talking g series so at least 2018

[teaston]

Originally Posted by F82Dude

+1 - not seen anything to indicate an M340/M440 in coming...!

Wouldn't make any sense with the current line up; 14HP isn't going to make a lot of difference?! The 1/2 series engines stop(ped) at 28 and 30i and they never had a basic 35/40i version (ignoring the gen 1 135i), so makes sense. Just doesn't with a 3/4 series. Unless of course they tweak it to 360+HP...

I think it's more about differentiating the 40i from the rest of the range, same as Merc do with the C43 & Audi do with the S4/5

[dopper99]

Originally Posted by 225

It was an article on the front page for one. Seems inevitable as well as im sure the new m3 will be knocking on at least 450bhp if this one has 426 odd so plenty of space between the two.

Just hope they make a touring varient.

The next gen M3 should be knocking on 500bhp (I hope).
My CP has 450bhp.

[Chris330]

Remember the dyno results on the x40i f3x show it's pumping out way above what's stated - closer to 340bhp.

Also, the MPPK takes it to 360bhp

[HighlandPete]

Originally Posted by SkyJawa

Not just about power, but weight too!

Add in market placement and performance across the ranges and models.

Not a new thing, and not about the power which can be extracted from any particular engine.

[dopper99]

Originally Posted by Chris330

Remember the dyno results on the x40i f3x show it's pumping out way above what's stated - closer to 340bhp. .....

Yes I thought this. In fact I'm wondering in reality if all B58 40i engines are putting out the same power, regardless of what the published figures are. It doesn’t make a lot of sense from a production point of view to make slightly different variants of the exact same engine.

[Jack_is_Back]

Surely an M340i would replace the current 340i, they wouldn't sell both?

[MashinBenzin]

Originally Posted by dopper99

Yes I thought this. In fact I'm wondering in reality if all B58 40i engines are putting out the same power, regardless of what the published figures are. It doesn’t make a lot of sense from a production point of view to make slightly different variants of the exact same engine.

I wondered the same, why would BMW bother with all these relatively minor differences in power. I guess it's just a map tho, so might add nothing to production costs?

But then the fact that F3x 40i engines always seem to dyno higher, as pointed out above...

[teaston]

Originally Posted by Jack_is_Back

Surely an M340i would replace the current 340i, they wouldn't sell both?

Yes that is the plan I believe, same as there's just an M140i & no 140i.

[dopper99]

The M340i will be a great car. No run flats for a start.

[SkyJawa]

Originally Posted by dopper99

The M340i will be a great car. No run flats for a start.

Well you can spec them on the other m lites so expect them to still be an option.