Fuel consumption during idling
Thread Starter
Junior Member
Joined: Apr 2013
Posts: 43
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From: Vancouver Canada
BMW Z4, GL350
Fuel consumption during idling
I have noticed when I stopped the car at a traffic stop or the gear changed to Parking or Neutral, The fuel consumption indicator is at full. Do I have an issue in my car? Or is it simply indicating, if I am going to stay like this, I am going to burn all my fuel with least economy? However when I am coasting it go down as expected.
Last edited by AJZ4; Feb 16, 2014 at 01:49 AM.
Member
Joined: Jun 2013
Posts: 160
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Fj cruiser 2014 GLK250
no you don't have an issue, what you see is normal...when you are stopped or parked you burn infinite fuel to go 1 mile since you are not moving. The fuel economy gauge is just displaying its maximum....
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Joined: Jun 2008
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GL
The gauge should show no reading, but I guess that's their compromise.
As noted, it's consistent with the "infinite" fuel consumption for zero miles, but it should just display it's raw flow rate (which should be an option at any time.)
I expected the 550 to have the start-stop feature (apparently on the 450, not on the 550, unless mine is somehow malfunctioning.)
I am tempted to manually start-stop the car pretty frequently now (not to the extent of traffic lights, but if there's more than an expected momentary delay, I'm quick to hit the button, eg. waiting to pickup a passenger at the curb, where I would previously have idled and perhaps my only thought would be to set the a/c to recirculate.)
As noted, it's consistent with the "infinite" fuel consumption for zero miles, but it should just display it's raw flow rate (which should be an option at any time.)
I expected the 550 to have the start-stop feature (apparently on the 450, not on the 550, unless mine is somehow malfunctioning.)
I am tempted to manually start-stop the car pretty frequently now (not to the extent of traffic lights, but if there's more than an expected momentary delay, I'm quick to hit the button, eg. waiting to pickup a passenger at the curb, where I would previously have idled and perhaps my only thought would be to set the a/c to recirculate.)
Member
Joined: Jun 2013
Posts: 160
Likes: 2
Fj cruiser 2014 GLK250
The gauge should show no reading, but I guess that's their compromise.
As noted, it's consistent with the "infinite" fuel consumption for zero miles, but it should just display it's raw flow rate (which should be an option at any time.)
I expected the 550 to have the start-stop feature (apparently on the 450, not on the 550, unless mine is somehow malfunctioning.)
I am tempted to manually start-stop the car pretty frequently now (not to the extent of traffic lights, but if there's more than an expected momentary delay, I'm quick to hit the button, eg. waiting to pickup a passenger at the curb, where I would previously have idled and perhaps my only thought would be to set the a/c to recirculate.)
As noted, it's consistent with the "infinite" fuel consumption for zero miles, but it should just display it's raw flow rate (which should be an option at any time.)
I expected the 550 to have the start-stop feature (apparently on the 450, not on the 550, unless mine is somehow malfunctioning.)
I am tempted to manually start-stop the car pretty frequently now (not to the extent of traffic lights, but if there's more than an expected momentary delay, I'm quick to hit the button, eg. waiting to pickup a passenger at the curb, where I would previously have idled and perhaps my only thought would be to set the a/c to recirculate.)
Thread Starter
Junior Member
Joined: Apr 2013
Posts: 43
Likes: 1
From: Vancouver Canada
BMW Z4, GL350
The OP's car is in L/100 klms so it reads higher maximum they show is 20, If it was a US car it would show the opposite 0 mpg this could be where the confusion comes in. Each is at opposite ends of the display. When idling the real fuel usage is more likely to be 2-3 l/hr or 1/2 gph. so not really very much for short stops...
Thanks for the explanation. However if you think this way, when accelerating why its going close to 20 and during coasting it going close to 0
?
Member
Joined: Jun 2013
Posts: 160
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Fj cruiser 2014 GLK250
Which in L/100 klm is correct, when you accelerate you will use more fuel (higher L/100 klm) than coasting. if you are coasting down a hill foot off the gas then the L/100 klm will be zero or infinite MPG (Higher in imperial) since you are using no fuel but yet you may be coasting at 100 kph so in MPG it would be infinite or in L/100 klm it would show as zero.... does this help
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Thread Starter
Junior Member
Joined: Apr 2013
Posts: 43
Likes: 1
From: Vancouver Canada
BMW Z4, GL350
Which in L/100 klm is correct, when you accelerate you will use more fuel (higher L/100 klm) than coasting. if you are coasting down a hill foot off the gas then the L/100 klm will be zero or infinite MPG (Higher in imperial) since you are using no fuel but yet you may be coasting at 100 kph so in MPG it would be infinite or in L/100 klm it would show as zero.... does this help
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