Recently I made a 200 mile highway trip and my MPG seemed to be extremely off.

Over the 200 miles I had the cruise control set at 77 mph, I only left this briefly to pass other cars. I averaged just over 15 MPG which seems off to me. I have the 2.7 2wd 3.31 , which is advertised at 26 mpg. Now I understand that the 26 is under perfect conditions and I do have a level and 33s, but I feel like it shouldn't affect my MPGs that much.

Is this about normal or does it sound off?

Thanks Guys

 

I average 20-21mpg at those speeds with my 16 2.7 4wd screw.

 

I have 33 inch tires but no level yet.

 

something doesn't seem right. I can get 19+ at 80mph in a 3.5eb Screw 4x4.....

did you reset the trip computer at the beginning of the trip?

 

yes I did. I have to make the trip back in a few days and I will actually calculate the numbers to make sure its not the computer?

 

did you have it in sport mode or something?

 

Not in sport mode and not in tow mode.

 

flat highway? headwind?

How did the truck run? seem funny?

Honestly with all the sensors these trucks have, if something was awry with the engine, it would've thrown a CEL

 

I keep reading about this Sport-mode and looked to see if i have it in my 2012 Plat 5L, which i dont. I do have a 2018 on order which is another Plat with the 5L.
Will it have sport-mode or is that on the ecoboost's only?

 

All flat highway. Honestly I don't know about the wind. Didn't seem like the truck was running funny to me.