on board computer mpg dte accuracy.
#21
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MPG is based on an algorithm that NIssan does not publish. I believe that MPG and DTE (Distance To Empty) are related. The Factory Service Manual gives a more technical explanation. I have tested MPG on the highway at various speeds: the results are accurate and validate common sense; that is, the faster you go the worse the MPG.
#23
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MY350Z.COM
MY350Z.COM
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Ignore it. Reset the trip odometer, fill the tank, drive it, fill it again and divide the miles driven by the gallons needed to refill. Old school but accurate......On my '03 it is always dead on. 28 MPG on the trip to ZDayZ for 400 miles. 14 when I reset it and ran the Dragon up and back. Hmmmmm......
#24
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#26
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Just clicked over to the dte screen. It says 435 dte blinking however my gas light is on cause I didnt put gas in the morning. Something tells me its unplugged for it to tell me I have 435miles eith less than 3 gallons in the tank lol
Last edited by silva92; 05-23-2013 at 09:09 AM.
#27
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I try to reset as little as possible. my thinking is the longer i have it on the more accurate my lifestyle mpg is. overall im at 16.9-17.1 which makes alot of sense. I have a heavy foot when needed and do about a 75:25 ratio of city and highway driving. also I have a 08 z seems pretty damn spot on. i can make it say what ever i want just reset it go down the street and boom 31 mpg but obviously thats manipulation and not fact
-Long Freeway Drive
-Long Street Driving
-Mixed Street/Highway
that gives me a better idea of the average MPG for each of those scenarios
#28
what i do is drive long distance in the early morning (to find good surf spots) so my Z gets constant speed so it gets about 24.3 mpg then i refill full see what the guage says, reset it and, so far ive beem getting 425 per tank with chill driving, and smetimes getting sideways for a few minutes. Idk but works for me. When it comes down to it. I love my lol
#30
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I've had an '03 Performance for about 8 months now, and have only remembered to reset mine at refill four times now. Those four times it read high by 5.43%, 8.54%, 7.75%, and 6.55%. That's quite a variance, so I was surprised at how many people have reported it is very accurate for them. Wonder what the difference is.
I'm also fairly sure I'm plagued by the common fuel level sensor problem, as my DTE gives me a somewhat accurate number after I fill up when compared to how far I can go on a pretty good fill, but once the tank is getting low it freaks out way too soon, shows me ----, and I only get 13-15 gallons in the tank. :\
I'm also fairly sure I'm plagued by the common fuel level sensor problem, as my DTE gives me a somewhat accurate number after I fill up when compared to how far I can go on a pretty good fill, but once the tank is getting low it freaks out way too soon, shows me ----, and I only get 13-15 gallons in the tank. :\
#31
New Member
iTrader: (3)
I've had an '03 Performance for about 8 months now, and have only remembered to reset mine at refill four times now. Those four times it read high by 5.43%, 8.54%, 7.75%, and 6.55%. That's quite a variance, so I was surprised at how many people have reported it is very accurate for them. Wonder what the difference is.
I'm also fairly sure I'm plagued by the common fuel level sensor problem, as my DTE gives me a somewhat accurate number after I fill up when compared to how far I can go on a pretty good fill, but once the tank is getting low it freaks out way too soon, shows me ----, and I only get 13-15 gallons in the tank. :\
I'm also fairly sure I'm plagued by the common fuel level sensor problem, as my DTE gives me a somewhat accurate number after I fill up when compared to how far I can go on a pretty good fill, but once the tank is getting low it freaks out way too soon, shows me ----, and I only get 13-15 gallons in the tank. :\
Its kind of a game ive made fore myself, when is the z going to ACTUALLY run out of gas lol...It seems like it will run for ever even with the gas gauge needle buried way past the Empty mark...
#33
New Member
I have a 2003 and my mpg gauge is very accurate. I say this after testing against manual calculations (“the old-fashioned way” using gallons at fill and miles driven, calculated over a few fills.).
As terrasmak suggests, I reset the computer with each fill, but record the mpg value. I then add the number of fills and average the computer’s mpg values; and compare this to my manual calculation that I maintain for several fills. The values are always very close. --Spike
As terrasmak suggests, I reset the computer with each fill, but record the mpg value. I then add the number of fills and average the computer’s mpg values; and compare this to my manual calculation that I maintain for several fills. The values are always very close. --Spike
#34
New Member
iTrader: (3)
I have a 2003 and my mpg gauge is very accurate. I say this after testing against manual calculations (“the old-fashioned way” using gallons at fill and miles driven, calculated over a few fills.).
As terrasmak suggests, I reset the computer with each fill, but record the mpg value. I then add the number of fills and average the computer’s mpg values; and compare this to my manual calculation that I maintain for several fills. The values are always very close. --Spike
As terrasmak suggests, I reset the computer with each fill, but record the mpg value. I then add the number of fills and average the computer’s mpg values; and compare this to my manual calculation that I maintain for several fills. The values are always very close. --Spike
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