Average Miles per gallon
5 Year Member
Joined: Feb 2020
Posts: 7,704
Likes: 2,188
I'm not OP but in a similar situation.
2016 3.5 eco boost, 4x4, 2 inch level, K02's 33's tires inflated to 40 psi
56,000 miles on vehicle
Spark plugs and air filter replaced in March 2026
15,6 MPG City prior to replacing plugs and air filter, no change afterwards.
(I've converted the miles and mpg to standard measurements)
Actual 90,000 km driven Gas mileage city 18L/100KM
Next attempt will be to clean or replace map sensors. If I can locate them.
2016 3.5 eco boost, 4x4, 2 inch level, K02's 33's tires inflated to 40 psi
56,000 miles on vehicle
Spark plugs and air filter replaced in March 2026
15,6 MPG City prior to replacing plugs and air filter, no change afterwards.
(I've converted the miles and mpg to standard measurements)
Actual 90,000 km driven Gas mileage city 18L/100KM
Next attempt will be to clean or replace map sensors. If I can locate them.
Senior Member
Joined: Jan 2017
Posts: 1,891
Likes: 1,065
If Hawaii adds more alcohol to fuel mix, mpg goes down, Level the truck, mpg goes down, remove front air dam mpg goes down, change diameter of tires, mpg might not go down, but speedometer is no longer accurate and displayed mpg can go down. leave it in 4wd all the time mpg goes down, Then driving habits will effect mpg.
My 2018 3.5 Ecoboost on a 700mile road trip speed limit 75 I average 22mpg, into South Dakota and run 85 and it drops to 17mpg, Add wind, it drops if headwind and improves with tail wind,
My 2018 3.5 Ecoboost on a 700mile road trip speed limit 75 I average 22mpg, into South Dakota and run 85 and it drops to 17mpg, Add wind, it drops if headwind and improves with tail wind,
