[Bunklung]

I find that I am constantly averaging above 4 mi/kWh since each full charge, but my lifetime average is always around 3.8 mi/kWh +/-.1

Does anyone else notice this?

 

[Lbrooks51115]

I find that I am constantly averaging above 4 mi/kWh since each full charge, but my lifetime average is always around 3.8 mi/kWh +/-.1

Does anyone else notice this?

What I notice is a major descrepency between what's displayed in the app and the car. In the car my life rime efficiency is steady at 5.7 kWh. The lifetime effeciency in app is variable. When I recharge it goes down to 4.3 kWh but as I drive on the charge it goes up and usually before I recharge it's at 4.6-4.kWh. I than recharge and it goes back down...

 

[NewsCoulomb]

I was told (but haven't verified), that the app actually includes charging efficiencies, so it reads lower than what is displayed in the car.

For instance, my lifetime efficiency is 3.6 mi/kWh, but I only ever see efficiency that low when I'm driving freeway speeds on long trips.

 

[Bunklung]

What I notice is a major descrepency between what's displayed in the app and the car. In the car my life rime efficiency is steady at 5.7 kWh. The lifetime effeciency in app is variable. When I recharge it goes down to 4.3 kWh but as I drive on the charge it goes up and usually before I recharge it's at 4.6-4.kWh. I than recharge and it goes back down...

How do you find the lifetime efficiency from within the car itself? I can't seem to find mine in any of the menus. I see the avg from, that on my driver side dash.

 

[NewsCoulomb]

How do you find the lifetime efficiency from within the car itself? I can't seem to find mine in any of the menus. I see the avg from, that on my driver side dash.

I think most people are using the MyChevrolet App, which is why it displays a different number than what you see on the dash. I believe you can also log in to your OnStar account and look up your car's data.

 

[Lbrooks51115]

How do you find the lifetime efficiency from within the car itself? I can't seem to find mine in any of the menus. I see the avg from, that on my driver side dash.

I think in my case I have used the DIC settings and have not rest since purchase so it reflects the total trip odometer and gives you kWh.

 

[stanwagon]

I really do want to know the lifetime efficiency, and so never reset the trip odo on the DIC. Sadly a software update caused a reset at 5000 miles, but I can just keep track of the number from the first 5000 and average it in.

What is mildly annoying is that the 0.7 kWh I gain on the downhill when leaving the house with a fully charged (using hilltop reserve) battery is not included in any of the readings (because GM will never show negative numbers for kWh used), including the DIC odo. So to get a more accurate reading I have to add 2% to the DIC reading of (for last few months) 5.3 mi/kwH, turning it into 5.4. As I write this I realize that all my experiments only show that the 0.7 is ignored in some of the other charts on the central console. But it seems logical that it is ignored on the main trip odo as well.

 

[wesley]

I realized that much of the information on the energy spent and the distance travelled could be reset, and not always intentionally. Also, the MyChevrolet app becomes severely lacking when you select Korea as the region and it doesn't even show the efficiency value. No OnStar, so no logging, either.

So instead of stressing over the lack of accuracy or feature, I decided to simply log the trip distance and energy usage in a spreadsheet and have it automatically calculate the efficiency on the trip / monthly / lifetime scale. Comparing with these numbers, it appears that the efficiency number shown below the speedometer for my car is accurate when counting from the point when the battery-related software update was applied.

 

[Paul Gipe]

I realized that much of the information on the energy spent and the distance travelled could be reset, and not always intentionally. Also, the MyChevrolet app becomes severely lacking when you select Korea as the region and it doesn't even show the efficiency value. No OnStar, so no logging, either.

So instead of stressing over the lack of accuracy or feature, I decided to simply log the trip distance and energy usage in a spreadsheet and have it automatically calculate the efficiency on the trip / monthly / lifetime scale. Comparing with these numbers, it appears that the efficiency number shown below the speedometer for my car is accurate when counting from the point when the battery-related software update was applied.

This is what I do as well. I enter the data in a spreadsheet and keep track that way.


Paul

 

[stanwagon]

Wesley: Different cases though mean that the efficiency number you are using might not be accurate. I start every drive with a 2-mile 750-foot downhill that gives me 0.7 kWh. After every reset, the 0.7 gain is completely ignored in the various charts, including the trip odometer you mentioned. Since I reset, roughly, when I have used about 35 kWh, that means that that recorder is off by 0.7 kWh. So an adequate approximation is gotten by adding 2% to the rate, turning my 5.3 into 5.4.

 

[wesley]

Wesley: Different cases though mean that the efficiency number you are using might not be accurate. I start every drive with a 2-mile 750-foot downhill that gives me 0.7 kWh. After every reset, the 0.7 gain is completely ignored in the various charts, including the trip odometer you mentioned. Since I reset, roughly, when I have used about 35 kWh, that means that that recorder is off by 0.7 kWh. So an adequate approximation is gotten by adding 2% to the rate, turning my 5.3 into 5.4.

I agree that it would not be accurate in that situation. If it happened to me, I would subtract 0.7kWh from the numbers I enter into the spreadsheet.