In modern engines, if the car is in gear and slowing down and the accelerator isn't depressed, no fuel will be pumped through. If you flick it into neutral, the engine needs fuel to stop itself stalling.
(Original post by Steezy)
Petrol usage is based on the revs... So if you keep it in gear, the revs stay higher than if you take it out of gear.... So therefore if you take it out of gear you use less petrol...?
Unless I'm being a retard which could be the case.
Of course you need to balance that up with which gear you're in and how much the engine is slowing you down vs knocking down into neutral, but with having it in gear you have more control if there's an emergency situation.
Last edited by FXX; 27-04-2012 at 13:38.