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      09-08-2018, 12:11 AM   #1879
brad850csi
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Quote:
Originally Posted by mkoesel View Post
So it turns out the 45e is an I6 rather than an I4 as was used in the outgoing 40e:

https://g05.bimmerpost.com/forums/sh....php?t=1532990

This surprises me because I had expected more power from BMW's second generation I6 hybrid setup when it finally hit the market, such as perhaps a "50e" with 450hp or even more. Per the X5 45e press release, the TwinPower I6 used in this application is the least powerful BMW has ever released for regular production - nearly 100hp shy (on its own) of the new B58B30O1 coming soon to the G20 M340i and G29 Z4 M40i.

Furthermore, it's a shame that the 40e will be left with no immediate replacement in terms of a high output four cylinder PHEV setup that exceeds the power of any non-hybrid four cylinder model BMW offers. When you look at Volvo's top of the line T8 I4 hybrid setup, it shows what can be achieved. Indeed, BMW has also just announced (but followers of this thread knew was coming for years now) the B48A20T1 with 300hp, which could have been used instead in the 45e, matching its output with two less cylinders. Presumably this was determined to be more costly and/or not as efficient. But it is nevertheless unfortunate from my perspective to see BMW apparently backing away from augmenting their four cylinder and six cylinder engines with electric motors to the effect of producing more power than those engines could on their own.
I was actually thinking that the 45e was going to be a higher tuned 4 cylinder but I'm happy that it is a 6 cylinder.

However I completely agree with there being a 4 cylinder and a 6 cylinder option, perhaps 35e or 40e and 45e or 50e for the two different engines would have been quite good.

The difference in fuel use between the 210kw version and the 265kw B58 must be minimum with the added hybrid system.

Equally the difference between the 135kw and the 190kw B48 or even the new 225kw in the X2 M35i must again be minimal. I also wonder if the 190kw B48 engine would have been faster overall and used less fuel than the 210kw B58 version in the new 45e. I've love to hear some further analysis around this.
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