[Chrysler kid]

For my driving style Coasting in neutral typically yields more of an increase than engine off coasting. It's also less stress on the starter and alternator and battery.

I doubt the mileage dip from my engine off coasting was from anything but the alternator kicking in to compensate from the drain on the battery when the vehicle was off. My alternator typically sends out 14.5 volts and puts a noticeable strain on my engine. Driving at night with the ac on is death to my mileage

Once the alternator clicks into its maintain cycle the car runs noticeably smoother and a slightly higher rpm.