I've read here a few times that coasting in gear, gets you better mpg than dropping to neutral. Although this was a rather weird idea at first, I actually believe it. I have paid attn to that constantly moving horizontal bar graph in the Z's computer readout. It is true, when lifting off the gas and coasting in a gear, at higher speeds, the bar graph reads completely full (i.e. 60mpg or however high it goes up to); this is not true for when you drop into neutral, it shows like 40s or something.
That alone convinces me that you're better off coasting in gear.
Finally, I drive highway a lot, long trips for work. I've done this a few times, setting the cruise to 75mph. On one 200 mile trip, I averaged 27.7 mpg; on a second, slightly shorter trip, I averaged 28.5 mpg.
__________________
-Are you coming to bed?
-I can't. This is important. -What?
-Someone is WRONG on the internet.
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