Getting absolutely Horrible Mileage with my 2018 5 liter F150 Dakar, I have 35 inch Mickey Thompsons with a 3.55 to 1 axles, 10 speed Transmission and was thinking of getting a tuner to Help increase my Mileage, I'm getting 19 to 23 L per 100 Km which pans out to approximately 12 to 15 MPG does this sound right? Dealer tells me since there is No Lights on they cannot see anything wron? any help would be appreciated , Thanks in Advance, Mike

 

35's and 3:55's that's the problem.

 

12-15 mpg is about as good as you're going to get once you start adding level/lift and bigger wheels & tires.

 

shorter gears might bring your city average up from being 12-15 to like 14-16 instead. But your highway mileage is going to suffer regardless of what you do.

You wanted a lift and 35's, you are getting what you wanted.

 

agreed to all of the above

 

Are you hand-calculating the mpg? What fuel are you using? What wheels and tires are they?

 

Add a little boost and it will go down even more.

Mike

 

10-12 to be exact

 

Run e85 for maximum pass everything but a gas station status. 👌

 

Yes but SPG (Smiles Per Gallon) goes up exponential.


Mike