MPG improving after 600 miles?

[Easy Rider]

 

And in a true average calculation, there is no way those 10 miles could "warp" the total average calculation to any great extent.

 

So you see, there should be very little warpage due to those first 10 miles of bad MPGs,

 

I am not necessarily talking about JUST the first 10 miles.....but it's possible that the computer somehow thinks that it used 10 gallons of gas to go those 10 miles.

 

I'm referring to the lousy real performance during the first couple of hundred miles or so........which can effect your long term average for much longer.

 

And you still haven't answered the real question: " Why don't you just reset the "long term" average and have a more realistic number to look at ??"......so I quit.

[hybridbear]

 

That is my point, that the first 10 miles are miniscule in an average calculation when compared to the total of 2700 miles I currently have on my odometer. And in a true average calculation, there is no way those 10 miles could "warp" the total average calculation to any great extent.

 

For a worst case type of an example, say I had only gotten 20 MPG for those first 10 miles, then the average calc for those 10 miles would have been something like:

 

10 miles / 0.5 gal = 20 MPG

 

So say in the next 2700 miles, I had these example results:

 

2700 miles / 57.4 gal = 47 MPG

 

So then the total average calculation for those combined 2710 miles would then be:

 

2710 miles / 57.9 gal = 46.8 MPG

 

So you see, there should be very little warpage due to those first 10 miles of bad MPGs, after another 2700 miles of good MPGs are added into the mix, at least not to any real sigificance. And as you mentioned, having the little affect on my displayed average MPGs should bring it even closer to reality since the displayed trip and average MPGs are on the optimistic side.

 

 

Yes, sometimes they are significantly higher. I have seen as much as 3 MPG difference between actual pump_tank_gallons_to_odometer calculations versus the displayed trip summary for that fill-up.

What Lifetime MPG display display do you have on your 2014? They took away the Lifetime Summary for 2014.

[djminfll]

I reset my lifetime after the software upgrade - so my average from Feb '13 until August '13 was wiped out, Aug '13 through May '14 is at about 44. But this is climbing since I got the new job and have the perfect commute for a hybrid. I'm hoping it will continue to climb over the next year. I am going to reset it again at 30K, which at the rate I'm driving will be in around September or October.

FYI, in reference to the tire conversations earlier in this thread, I have 22K on the car now, and my tires still look like new. I had them rotated at 10K and 20K during the routine service appointments, and I check the air pressure periodically, but I don't do anything else to maintain them.

[Hybrider]

What Lifetime MPG display display do you have on your 2014? They took away the Lifetime Summary for 2014.

 

It is listed as "Avg Fuel Economy", "Average Fuel", or "Avg MPG" in the 2014 owner's manual, and it is available on most of the main screens, including the Empower, and also on the MyView which is the view I use most now, where I select the "Tach rpm x 1000 + Avg MPG", so I can see the most precise indicator of when the ICE starts and stops, along with the "Fuel History" view so I can get a good idea of what my current trip MPGs will be once I stop.

 

But this is the exact same average MPG value (44.5 MPG) that is shown on my Trip 2 screen which I am using as my pseudo-Lifetime Summary.

Edited May 25, 2014 by Hybrider

[hybridbear]

 

 

It is listed as "Avg Fuel Economy", "Average Fuel", or "Avg MPG" in the 2014 owner's manual, and it is available on most of the main screens, including the Empower, and also on the MyView which is the view I use most now, where I select the "Tach rpm x 1000 + Avg MPG", so I can see the most precise indicator of when the ICE starts and stops, along with the "Fuel History" view so I can get a good idea of what my current trip MPGs will be once I stop.

 

But this is the exact same average MPG value (44.5 MPG) that is shown on my Trip 2 screen which I am using as my pseudo-Lifetime Summary.

 

Ok. So you've never reset that MPG display?

[Hybrider]

Ok. So you've never reset that MPG display?

No, I've never reset it since I want it to be a true lifetime average.

I'm curious though, if I reset it, will it go to "0.0" or some other value?

[hybridbear]

 

No, I've never reset it since I want it to be a true lifetime average.

I'm curious though, if I reset it, will it go to "0.0" or some other value?

 

It will read "---" until you drive about 0.1 miles or so and then it starts calculating. I reset that display daily and use it to track my day-to-day MPG. Because that average is only a small amount of data and thus changes quickly I find that it helps me to maximize my MPG on each trip. I reset Trip 1 with each tank of gas and Trip 2 at each 1000 miles on the odometer. Trip 2 thus gives me a longer term average to look at to see seasonal changes. And then I have the Lifetime Summary which I reset when we purchased the car, so it only includes our driving.

[Easy Rider]

That's pretty much what I have been doing too.

I reset them ALL at about 1000, reset the "active" one fairly often, do T-1 with each fill and am trying to let T-2 be a long term average......if I don't reset it again by mistake !!

[acdii]

Right now mine sits at 41.7 with 23700 miles on it. This is from the day it was driven off the lot, which included all the really cold winter driving. I dont plan to reset it just yet, maybe when I replace the tires.