Quote:
Originally Posted by ovekvam
I haven't done any calculations here now, but I would guess that a 116i and a 316i would have approximately the same consumption at 100 km/h. At lower speeds, the 116i would be less thirsty, while the 316i would be less thirsty at higher speed. It also depends on how much you accelerate. Keeping a constant speed on a flat road would benefit the 316i, while hill climbing and changing speed would suit the 116i.
In general, large engines are better suited for high speed driving, and small engines work well for low speed urban driving. Our 116i was not very happy at 200 km/h on the Autobahn, and I guess an M135i would be very thirsty in the city.
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Good points.
We've had similar experiences here in the UK with the E87 and E90 1 & 3-series smaller diesels. One particular comment from users either with both, or moving to the 1-series, noticing the mpg is not as good as expected from the 1-series at motorway speeds.
HighlandPete