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fuel consumption

Joelojeda18

By Joelojeda18
in Troubleshooting & Recalls

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Joelojeda18 New Member

Joelojeda18

Posted
Posted

I have a 2017 LTZ Silverado 1500 with the 5.3 ecotec engine. I was wondering if this is normal, when I fill up my truck is says it has like 430-450 til empty. But I’m only getting like 350 miles out of a full take of gas. Does anyone know if thats normal or not. The truck only has like 43k miles on the dash. 

HeySkippyDog Senior Enthusiast

HeySkippyDog

Posted
Posted

Are you using the trip odometer to measure or just guessing?

Your fuel mileage will drop if you drive around town and idle a lot. If you're not doing that, I'd be concerned. That range assumes highway mileage, because my 2017 will get that, if I let it use V4 mode (which I don't). I get about 20-21 mpg.

Sent from my SM-J810F using Tapatalk

CamGTP Senior Enthusiast

CamGTP

Posted
Posted

Don't quote me here but I kinda think it goes off your last 25 or 50 mile avg for the miles to empty.

 

I drive 95% city miles with my short commute to work everyday. The last time I went up north to the cabin I filled my tank up before leaving. At this point I was getting maybe 12-14mpg so my range said roughly 350-360 miles to empty. My trip there is all freeway and county roads that are 55-60mph. The miles to empty I swear stayed at 350 miles for over 130-140 miles because I was getting 20-22mpg easy on my trip and with that math I could do a little over 500 miles to the tank. The miles to empty range never auto updates and that bugs me alot.

 

So the next time I filled up the miles to empty said 450+ miles because my avg went way up. Now that it's cold I'm getting about 7-10mpg because I use my remote start and don't care one bit about saving fuel, so my miles to empty is like 230 miles to the tank now if I'm lucky.

mikeyk101 Senior Enthusiast

mikeyk101

Posted
Posted

Dont forget about winter blend gas as well. Your gas mileage will go down with the winter blend as it is manufactured to evaporate quicker.

Grumpy Bear Senior Enthusiast

Grumpy Bear

Posted
Posted
11 minutes ago, mikeyk101 said:

Dont forget about winter blend gas as well. Your gas mileage will go down with the winter blend as it is manufactured to evaporate quicker.

There is nothing of note to remember. Winter fuel has 1.5% less BTU content than summer fuel which directly translates to a mere 1.5% drop in economy. 0.3 mpg on a 20 mpg truck. So 19.7 mpg v 20.0 mpg. Unless you're tracking and averaging thousands of miles over dozens of tanks, you wouldn't know it was happening. 

 

13 hours ago, Joelojeda18 said:

I have a 2017 LTZ Silverado 1500 with the 5.3 ecotec engine. I was wondering if this is normal, when I fill up my truck is says it has like 430-450 til empty. But I’m only getting like 350 miles out of a full take of gas. Does anyone know if thats normal or not. The truck only has like 43k miles on the dash. 

Cam gave you the best answer you're going to get. If you put up that screen and watch it awhile you would see if move continuously. It's a projection based on fuel used and miles driven. The remaining fuel is then given a distance based on the current last 25 miles and that projection added or subtracted as the case may be from the first reading to project a current value. The next tank starts on a fresh fill and the projection based on the last 25 mile average from the last tank. Loop  and repeat.  

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