With modern ECUs, coasting (moving the car in neutral) consumes more fuel than driving in gear without accelerator input. Coasting is same as idling. But driving in gear without accelerator input or braking will cut-off the fuel. So if you are going downhill or coming to a signal stop, always slowdown in gear and not in neutral.
The simplest and the most effective rule for better FE is to use the accelerator pedal as less as possible (use the momentum properly) |