Can you really save fuel doing it? Or not??
Own opinion was yes and to support that saw recently on a re-run of a Top Gear from about 5 yrs ago JC suggested it does (when he was taking an Audi from NW London to Edinburgh & back again on just 1 tank of fuel)
Yet when discussing this at the weekend with a friend he said its an urban myth and you do not save fuel doing it
What does the panel think? |
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By (user no longer on site)
over a year ago
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Its a myth as your engine is running even when free wheeling so its still using fuel. It doesn't save you anything apart from wear and tear on the engine etc. |
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By (user no longer on site)
over a year ago
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its what your car never does lol
free wheeling is when your going downhill and you put it in neutral or put your foot on the clutch. ie engine idling revs only.
ps did your car start today lol |
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"its what your car never does lol
free wheeling is when your going downhill and you put it in neutral or put your foot on the clutch. ie engine idling revs only.
ps did your car start today lol"
oi!!! it started fine twice today thank you very much lol
although i do have to go out again in a min so probably wont be that lucky this time
and it must save you some money cos all then time yo have your foot on the pedal you are putting MORE fuel in than when its idling surely?? |
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By (user no longer on site)
over a year ago
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it def works as i used to spend 60 quid a week getting to work and back, and my mate told me to do it, last week i spent no more than 50 and still had petrol in tank, although i was driving on motorway at 50 mph all the way aswell lol, but it surely also logical that ur rev counter goes way down so less petrol used.........i may well be wrong |
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By (user no longer on site)
over a year ago
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possibly in a petrol,but jc was in a diesel which is a totally different animal.because diesel work on heat and compression,when coasting engine work harder to keep compression up. |
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By *harpDressed ManMan
over a year ago
Here occasionally, but mostly somewhere else |
Question -
Does your car use fuel more if you rev it harder?
If yes...
Wouldn't it be obvious that idle revs uses less fuel than actually working the engine?
If no....
Congratulations! You've won the Nigerian lottery |
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By (user no longer on site)
over a year ago
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Just asked my son, a mechanic, and he looked at me like i was an idiot  when you are freewheeling with the engine running but not in gear, the vehicle is using fuel. It is possible, however to drive a great distance on one tank of petrol, if one does not rev the engine and drive like a maniac  |
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By (user no longer on site)
over a year ago
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"Question -
Does your car use fuel more if you rev it harder?
If yes...
Wouldn't it be obvious that idle revs uses less fuel than actually working the engine?
you will find driving in the top gear of you car you use around the same revs as idle.difference is the action of the wheels and gearbox turning keep the crank rotating.when this is not happening the ecu compensates by putting more fuel into engine.
If no....
Congratulations! You've won the Nigerian lottery"
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By *harpDressed ManMan
over a year ago
Here occasionally, but mostly somewhere else |
I do actually measure my fuel consumption, and I get better MPG by driving with low revs and the occasional coast than I do by driving aggressively. Taking 5 mph off your motorway speed makes a big difference too. |
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