Equipment: 2010 2.0T Premium, just turned 11 years old.
I'll start by saying I'm an obsessive record-keeper, which makes this hard to explain. Today I sat down to look at my mileage averages on a spreadsheet I've always kept. In the MPG determination I have always used the mileage from the trip odometer. I also periodically (every few months) note a total odometer reading with a date; today I was comparing those #s to the sums of the trip odometer readings, which of course should technically be equal.
For the first comparison, there was 1 mile difference (8740 vs 8739 at the 8-month mark). Then things basically go to slop - the total odometer #s are consistently higher than the summed trip odometer readings, mostly in the 9-14% range. I'm certain I'm not perfect with my record-keeping, but right now It's 69000 miles vs. 60400. That's on the order of 30 tankfuls; I've missed 2, maybe 3.
This really surprises me; has anyone else noticed this? I'm going to start logging trip odo vs. total odo in real time, and I should see a difference in a tankful or two if the 2 odos are not recording mileage at the same rate.
Thanks -
B
I'll start by saying I'm an obsessive record-keeper, which makes this hard to explain. Today I sat down to look at my mileage averages on a spreadsheet I've always kept. In the MPG determination I have always used the mileage from the trip odometer. I also periodically (every few months) note a total odometer reading with a date; today I was comparing those #s to the sums of the trip odometer readings, which of course should technically be equal.
For the first comparison, there was 1 mile difference (8740 vs 8739 at the 8-month mark). Then things basically go to slop - the total odometer #s are consistently higher than the summed trip odometer readings, mostly in the 9-14% range. I'm certain I'm not perfect with my record-keeping, but right now It's 69000 miles vs. 60400. That's on the order of 30 tankfuls; I've missed 2, maybe 3.
This really surprises me; has anyone else noticed this? I'm going to start logging trip odo vs. total odo in real time, and I should see a difference in a tankful or two if the 2 odos are not recording mileage at the same rate.
Thanks -
B
