I'm still new to this truck ('04 F150, 5.4L). I've been averaging 680km on a tank of gas with mixed driving. I did air filter, spark plug change, changed the fluids and just the other day changed fuel filter.
Thinking of getting a tuner to bump it up in MPG a bit.

 

What size fuel tank? My 2010 F150 with the 5.4L would do about 900-1000km on the highway with a 136 litre tank with a cold air intake, magnaflow catback and superchips programmer. Mixed driving was about 8-900km.

 

I get about the same, 650-700 km to a tank on my 2010 F150 5.4L 0% of that is highway, it's all in town and no mods yet. I don't let it go down past a 1/4 tough so that's just a rough estimate. Hopefully I will find some highway driving soon to see what that's like.

 

Damn, you guys are getting good MPG. I have an easy foot with my truck and still.
I have 110L tank I believe. $130-$140 to fuel up when I'm right down to the bottom. Thinking of getting a tuner.

 

Keep in mind the 09+ went to a 6 speed which helped a lot with highway mpg. I could get 900ish or 999 as the dash would say with my 2010 on the highway. Can't remember what the mixed was...

 

Both my trucks get 16-17L/100KM (when I take it easy in the Lightning) Lightning has a 4spd and FX4 has a 6spd. The final drive ratio is very close in both.

 

I am getting around 14.7L/100 kms which is about right for mixed on this truck. I am prety easy on th pedal. Any kind of prolonged fun and she's up to 16-17 right away, even higher.

 

Go around the corner..

bahaha jk jk I work from my home (shop in backyard) so I don't have to drive to work, pretty much just in town use, go see the g.f, car shows

 

'07 F-250 6.0L 5R110W 4x4 CCSB 3.73 LT275/65R20 truck and I get about 500 kms. out of a tank of fuel with mixed city and highway driving under my heavy right foot. I believe my truck has the smallest tank for these trucks. By my calculation, that's about 12 mpg's. I would LOVE to be able to see 800 to 900 out of a tank, but I believe that to be a fantasy.