Trip A over or under estimates MPG?
#1
Trip A over or under estimates MPG?
I was curious to see what others are getting on the 06 HCH MPG differences between manual calculation and Trip A indicator (assuming use of Trip A per tank). Below are stats from my last 5 fillups. BTW, I stop at 1 click when filling up.
OdoMiles TravelledGallonsMPG manualMPG Trip ADifference889456.309.55347.7744.7-3.071342452.509.73946.4652.45.941575232.604.76648.8051.42.602030455.209.69146.9754.37.332484453.8010.26844.2053.18.90
OdoMiles TravelledGallonsMPG manualMPG Trip ADifference889456.309.55347.7744.7-3.071342452.509.73946.4652.45.941575232.604.76648.8051.42.602030455.209.69146.9754.37.332484453.8010.26844.2053.18.90
#3
Re: Trip A over or under estimates MPG?
You have to remember that filling up at gas stations is not 100% accurate. Even if you use the same pump at the same station, the varying pressure can cause it to give you a "click" at a different level of gasoline then the one before it, which will obviously skew your data. I would trust the computer more because there has to be a sensor there that is measuring fuel flow, and since it knows the miles traveled in its internal memory, obviously it can give you a MORE accurate readout of mpg. Hope this helps.
#4
Re: Trip A over or under estimates MPG?
Originally Posted by mwong99
Looks like the stats spreadsheet did not paste properly. Here it is attached.
#5
Re: Trip A over or under estimates MPG?
Last weekend I drove a low mileage HCHII on a 155 mile trip. I reset the trip meter and on arrival the mpg indicated 49.6 miles as I recall. About half of trip was under 70 and half above 70 mph. This is better than my 05 which has a lifetime average of 39.7 and current tank is around 41.2 mpg. I did not fill up the new one, so dont know what actual mileage was. My 05 varies +/- a couple of mpg doing it manually.
#6
Re: Trip A over or under estimates MPG?
Originally Posted by mexiken
You have to remember that filling up at gas stations is not 100% accurate. Even if you use the same pump at the same station, the varying pressure can cause it to give you a "click" at a different level of gasoline then the one before it, which will obviously skew your data. I would trust the computer more because there has to be a sensor there that is measuring fuel flow, and since it knows the miles traveled in its internal memory, obviously it can give you a MORE accurate readout of mpg. Hope this helps.
But over time those pump variations will average out and I believe averaged pump calculations are more accurate than the number on the dash - even if you do not have the 63-mile bug.
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