Quote:
Originally Posted by Transfer
Crikey! I don't think I can justify the 35i anymore. 3mpg was not significant but 6mpg most certainly is and the xDrive28i will still hit 60 in less than 6.5 seconds. The final piece for us will be driving both models and seeing if the 28i has enough oomph.
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In my experience, it will likely be a bigger gap. We have a 135i with the six speed automatic. My wife has a very short commute and it typically gets 16 mpg. A loaner F30 328i (with the 8s auto) returned 24 mpg on the same commute.
The transmission makes a huge difference and allows the 4 cylinder with a narrower power band to feel as quick in city driving as the 6 with the older transmission. Clearly in full throttle situations and at triple digit speeds, the six holds a noticeable advantage, but in city driving situations, I don't feel much, if any advantage, and the efficiency gains are certainly a huge advantage.