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Coasting- N vs. in gear coasting
I have been watching this closely and on one off ramp about 1/2 mile long I have been testing. It is a long slight uphill, sweeping turn and then a long downhill. I go up on cruise control at 54mph and just before the top I switch it off. When I shift to N the rpms drop but settle at about 1300 and the instant mpg display show 70-80 88- 90 for a split second and then back into the 80s. I do seem to coase a little further and faster.
When I switch off the cruise and coast in D I see the mpg go right up and to 99 and stay there for a while and maybe I lose 3-5 mph at the end.
It seems that while in D I have DFCO and while in N is bumps the rpm to speed because it will not drop to 700 until I come to a complete stop.
When I am stopped at a light I do shift into N and this seems to hepl FE.
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