View Poll Results: How do you calculate your MPg? If by hand is it higher or loewer than the trip comp?
Hand Calculation
24
70.59%
Display
4
11.76%
Mix of hand and display
8
23.53%
5 below display
0
0%
4 below display
0
0%
3 below display
2
5.88%
2 below display
6
17.65%
1 below display
6
17.65%
Same as display
3
8.82%
1 higher than display
1
2.94%
2 higher than display
2
5.88%
3 higher than display
0
0%
4 higher than display
1
2.94%
Multiple Choice Poll. Voters: 34. You may not vote on this poll

How do you figure your MPG?

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  #11  
Old 03-25-2008, 08:36 AM
coolshock1's Avatar
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Default Re: How do you figure your MPG?

Did you only choose that you calculate by hand? If so what would the difference be that you WOULD have chosen?
 
  #12  
Old 03-25-2008, 08:42 AM
mikieboyblue's Avatar
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Location: Mid Hudson Valley, New York
Posts: 1,389
Default Re: How do you figure your MPG?

Originally Posted by coolshock1
Did you only choose that you calculate by hand? If so what would the difference be that you WOULD have chosen?
I chose both and should have put my -1 as the MFD/NAV average is usually one higher. No big deal....
 
  #13  
Old 03-25-2008, 09:36 AM
coolshock1's Avatar
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Default Re: How do you figure your MPG?

I will continue to update my original post with updated Database analysis info.
 
  #14  
Old 03-25-2008, 09:48 AM
haroldo's Avatar
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Default Re: How do you figure your MPG?

Originally Posted by coolshock1
...

300 Vehicles Checked
Hand = 32.67%
Display= 54.33%
Mixed = 13.00%
AVG MPG w/.3636 per vehicle avg subtracted from display entry method = 38.56 MPG for the TCH
Originally Posted by coolshock1
... Hand Calculation of MPG = 33.93%, Display Calculation = 51.79%, Mixed Calculation Method = 12.50%...
Originally Posted by coolshock1
... I am 99 vehicles so far. H=30.3%, D=58.59%, M=11.11%.
Looks like if you keep doint this you are going to find that Hand is ~32%+/- 1%, Display will be ~52% +/- 1% and Mixed will be ~12%+/1 1%.
But at least that's what the pattern looks like to me.
 
  #15  
Old 03-25-2008, 09:51 AM
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Default Re: How do you figure your MPG?

Now what's your guess as to where the AVG MPG for the Camry will be?
 
  #16  
Old 03-25-2008, 10:29 AM
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Default Re: How do you figure your MPG?

I'll put my money on 36 MPG +/- 1 MPG
 
  #17  
Old 03-25-2008, 11:40 AM
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Default Re: How do you figure your MPG?

For those that didn't check the first page for the updates. I went through all of the Camry data and the results are below.

Originally Posted by coolshock1
This is a 2 part Poll. First I would like to know How you calculate your MPG. Second, if you record it by hand what is the difference between your manual calculation and the trip computers calculation.


14 Votes in for a difference between hand calc and display with an AVG difference of .4286 (Mikie's vote added in by hand)


Database Analysis Info

529 Vehicles Checked (Completed)
Hand = 34.22%
Display= 50.47%
Mixed = 15.31%
AVG MPG w/.4286 per vehicle avg subtracted from display entry method = 36.21 MPG for the TCH

The database is reporting 36.5mpg.

While 50.47% of the data reported was calculated via the vehicle itself it really didn't skew the numbers that much (.29% approximately)
 
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