Let's try and keep this thread simple to see if we can spot any kind of pattern. Please post your gears, engine, and cab size, then your average mpg.

I'll commit to summarizing the data after a couple weeks of good postings to see if we can see any measurable patterns. Along with others, I'm torn between lower gears and MPGs.

 

Are you considering lifts and tires as well? What about tunes and other mods? Or is the information you're seeking just for stock trucks?

3.31:1 gears
2.7L EB
SCrew
Lifetime 3600 miles: 21.0MPG*.**

*Mix of 87eco/93 perf tune, 2.5"/2.25" lift, 34" AT tires
** A good portion of my miles is highway. I don't do a lot of city stop and go traffic. Hardly any.

 

Let's consider everything. But I agree, mention of you have larger tires. I don't think a lift affects it that much; it's usual the heavier tires that follow a lift. On a side note, 21 mpg is great with tires and a lift and 3.31 gears.

 

3.31:1 gears
5.0L
SCrew
Lifetime 11,200 miles: 18.2 MPG

 

4x4 SCrew
5.0
3.31
Lifetime 1400 miles - 19.2 MPG

 

3.55:1 gears
3.5L EcoBoost
SCrew
Lifetime 3,400 miles: 19 MPG(was 19.4 until I found Sport Mode)

 

Regular cab

3.5 N/A

3.73 gear

18.0 mpg

95% in town driving. It's been on the highway once.

 

4X4 SCREW 5.5' bed
3.5 NA
3.73 non-LS rear end
1100 miles, stock 17" wheels/tires, no lift
19.8 mpg lifetime average, 70% city

 

3.55EL 4X4
5.0L
SCab with ARE MX cap on 6.6'
17.9 lifetime 4500 mixed driving have see 24@60mph
20" wheels

 

5.0L 3.31 gears
4x4 SCREW Lariat
6.6' box with Bak tonneau
stock 20" wheels

17.8 mpg lifetime of 3200 miles 80% highway at 70-75 mph
(13.2L/100km 5200km @ 112-120km/h)
21.4 mpg most recent highway trip of 1200 miles, pretty much steady at 70 mph (11L/100km @ 112km/h)