Is it consumes less driving in neutral?

Driving in neutral, it is often confused with driving sailing, because a car with manual gearbox this can only be achieved by engaging the deadlock.
The reality about driving in neutral is that it is not effective for saving fuel and we can easily endanger

Why not save fuel driving in neutral?

Deadlocked, without running any engaged, the motor runs at idle speed. It is the idling rotation of the engine to keep in continuous operation without external intervention.
It is estimated that idling spends between 0.5 and 0.7 liters per hour, which on one hand is not much. To save fuel when we drive downhill must make use of engine braking, which does not consume fuel.

Why do I put myself at risk driving in neutral?

The car is at the mercy of their inertia, which means that on steep slopes catch increasing speed without anything except applying the brakes to stop you. And this has undesirable effects because the engine braking. It is dangerous to drive in neutral because we lose much of the control of the car (and do not save anything, even more, we spend the brakes unnecessarily).