Hey all just a quick question to all regarding mpg's. 2007 KR SCREW 121600 on truck. Had new engine installed at 120000. I am getting roughly 15 mpg with mixed driving. Recently took trip to Hill Country in TX and bested at 17.6 mpg open road hwy. Dont really have a lead foot but I dont baby it either. Just curious if this is about normal for these trucks. I read through the forums and have heard some get 19-20 mpg hwy. I know we dont have trucks for great fuel economy but these sure are thirsty little monsters. Forgot to add 5.4l no mods. Thanks for any feedback. Also would like to add, I really appreciate all the helpful tips, questions, and information that is available on this site. You guys/gals out there are awesome.

 

Overall average of 15 is normal for the 5.4. Long stretches of interstate with cruise set at 65 will beat that, but for mixed, that was what I got with my 2005.

 

I get average 12-14, this is city driving (NJ stop and go traffic).

 

If open road in Texas is 75+ mph, you are doing fine. To get 19-20 on the highway, you have to keep it under 65 with no headwinds.

 

Thanks all. I appreciate the intel. I know if you try to do 60 on hwy here in TX they will be removing your run over buttocks from roadway lol.

 

You got that right! I usually run 75 and I can't keep up with the flow.

 

brother in laws 06 5.4 has never seen better than 13mpg. Usually around the 11.5 to 12.5 range.

 

Mine usually averages 14-17 in mixed driving. But mostly in the 14 range.

 

I average around 16mpg with my 2005 reg cab with the5.4 with 3.55 gears. Mostly interstate drive back and forth to work with some city mix and do 75 down the interstate.

 

Amen bluejay. Yeah forgot to add hmustang im running 3.73 rear. My old 98 SCAB 4x4 4.6 got 16mpg up hill, down hill, head wind or no. So I guess not too bad then or at least until fill up time lol.

 

Same. 15mpg mixed driving. I've seen 18mpg on long trips running 65mph or less with 3.55 gears.