Tylerl66

2014 4x4 Crew 21,000 miles
All stock except a Drop in K&N and a 2.5 inch level
I've never had below 16.5mpg and never above 18mpg
I drive a mix of 50/50 Highway/City. Sometimes more city other times more highway.
Longest road trip was 400miles round trip I averaged 75-90mph, I got 17.1 going & 18.0 coming back.
I couldn't be happier. I was getting between 10-12mpg in my single cab 4x4 Hemi

Ruff150

Two months ago I bought a 2014 screw 4x4 5.0. I average 22/23 mpg on the freeway and 16/18 in town. I'm blown away with the gas Milage. Couldn't be happier with it

Sparky101422

I get 22.5 at 55mph and around 19 going 70mph

Ruff150

I was getting 22/23 mpg at 75

commguy15

Any recommendations on the plugs guys? It looks like most people are getting far better mileage results, I'm not sure what I can do to try and get closer to those numbers. I wanted to start with the plug change.

Masi1926

What the F?
This is my average. Everyday. Actually it's usually 13.8.

leopold

I am getting 15 average. It is a screw 4x4 with 3.55 and 14k miles. The only thing added is a ARE tonneau cover.

Jeff67505

My 2011 5.0, 4x4 SCREW, 3:73, 72K is basically all stock, I use Amsoil full synthetic oil, Still original plugs. I did pull plugs out at 60K to see what they looked like and also wanted to make sure they would come out ok and I properly put them back in to spec. Im getting 17 to 20 city/highway. I do run pure gas as much as possible. with pure gas on highway it has jumped to 22 mpg.

Jeff67505

If you do get new plugs, I was considering new ones for my truck and I was told to stay with the OEM Motorcraft spark plug. Something about the vvt.

DBL Boost

I get 15L/100kms