IMHO the best way to save gas is just to be gentle on the gas pedal and on the brakes... I have a gas mileage reader on my dash that constantly moves the needle and it's saying I don't consume gas whenever I put it in neutral or whenever I let off the gas pedal... To wait for the moment 'til the car is about to stop before shifting from 5th to neutral doesn't help at all... Apparently, I feel that it's safer for my car whenever I just shift from any gear to neutral before gently stepping on the brakes... I also don't use the tranny to slow down my car unless I'm doing some spirited driving... I actually did all the experimentation of how to use the gas, brakes, and tranny in order to actually find out what the best way is to consume less gas, it turns out that there isn't much difference between any of them (20.9 mpg, 21.4 mpg, 21.9 mpg - same results came up numerous times). Just be gentle on the brakes and on the gas when accelerating ~ I found that to be the best way to save gas...