2014+ Gas Mileage (MPG) Topic

[crafferty]

This past weekend I got a fantastic 14.8mpg on the highway to and from Atlanta. But I was also going 85mph for most of the trip.

[brwk]

I've noticed that if you put the truck in M6 you'll go into V4 more often. I have done this the last few days and noticed my mileage has gone up 2 MPG during my commute to work

That curious, I'm going to try that.

[Victor Ferreira]

That curious, I'm going to try that.

I've been doing that since he suggested it and it actually did improve my mileage a little. Why this happens I'll never know, but hey, it helps, so it's fine with me.

 

 

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[GtEcH25]

Since I purchased the truck, about a month ago, I've averaged right at about 20 MPG. I pulled a 2 horse trailer, 1 horse loaded, for the first time today and took it down to about 11.3 MPG. I'm quite impressed with the MPG's this thing gets. Coming from a 4cyl Outback that got 27 MPG consistently, its not too shabby.

[Ventilator]

That curious, I'm going to try that.

I tried it a year ago, and again last week. I actually got worse gas mileage, but my regular gas station is putting in new tanks and pumps. It didn't stay in V4 any longer than normal, maybe less for my driving. I tried it with both Shell 93 and Citgo 87 octane. It could have been the different brand of 87, but the Shell 93 is the same brands as my normal 87. Back in drive for me. Should be back to normal gas this week, I'll give it another shot then.

[Rawyzf]

Anyone else calculate the MPG manually and compare it to the DIC?

 

I do it manually and enter this information into Fuelly (in my sig).

 

The DIC is always at least .5 better than actual results. LOL, I don't mind my mileage overall, but wish it was accurate.

[mjj]

Anyone else calculate the MPG manually and compare it to the DIC?

 

I do it manually and enter this information into Fuelly (in my sig).

 

The DIC is always at least .5 better than actual results. LOL, I don't mind my mileage overall, but wish it was accurate.

Yep, I do every tankful. You can see a screenshot of mine a few pages back. Mine too is always around .5 better on the DIC.

 

I've been pretty much all E85 but have recently tried a few tanks of regular 87 and have been avg about 18 mpg mixed driving.

[Mike1220]

Anyone else calculate the MPG manually and compare it to the DIC?

 

I do it manually and enter this information into Fuelly (in my sig).

 

The DIC is always at least .5 better than actual results. LOL, I don't mind my mileage overall, but wish it was accurate.

I've seen between .3 and .8 difference. The .8 was only twice in 21K miles

I wish these trucks had a "fuel consumed/used" screen for the DIC. My old Yukon had it and I always used that and it never matched perfectly to what went back into the truck at the pump.

Sometimes makes me wonder if the pumps are 110% accurate on how much is dispensed

[Rawyzf]

Yeah, someone is off a little. Either the pump or the DIC calculations. However, being that I have gotten gas a different places to see what the truck likes best, and always come out to be about .5 off, I think it's the DIC calculation that is off.

[tnchevy]

I've never been in a vehicle that was right on when it comes to mpg. My f150 work truck, my jeep, and my motorcycle and my silverado are all between .5 and 1 mpg off to the high side.

[Rawyzf]

I've never been in a vehicle that was right on when it comes to mpg. My f150 work truck, my jeep, and my motorcycle and my silverado are all between .5 and 1 mpg off to the high side.

My Saab 9-7x Aero (aka Trailblazer SS) was very close. Usually within .1 or .2.

[bboyce536]

In order for fuel pumps to be certified by weights and measures, they have to be set within .006 gallons and it is technically illegal to have all pumps set to either give to the customer any extra amount or the station owner. They essentially have to average out; some give, some take. But most guys set them right on 0 regardless. This is for Michigan and Ohio at least.

 

Also, pumps will click off at different times based on flow rate of the pump itself. So unless you fill up at the same pump every time, you could be clicking off at slightly different amounts every time.

 

I tend to trust the DIC when it comes to its readout, the DI engines know exactly how much fuel they are putting into the cylinders, so why wouldn't the truck know what MPG it is getting. Besides, every time I fill up, I am usually within .2 mpg what the DIC says and I always chalk it up to be the difference in filling up with different pumps.

[tnchevy]

I guess some trucks are different, mine is usually .7 off of what it should be.

[Rawyzf]

I used the same station and pump and method 80% of the time. Still off, I blame Dic. ☺

[ccdies]

I'm right there with you.

me too, except for 17 MPG on highway, I'm getting 13 on e85

Edited June 14, 2015 by ccdies