ChrisF

Hi my name is Chris and I'm new in this forum.

I bought myself my first F150. It's used 2015, F150, crewcab, 2.7L FX4, 29500 mileage.
I cranked on it around 300 miles and have some questions about performance of this truck or eventually mistakes I'm doing.

It looks like I can't get MPG, which ecoboost 2.7L engine suppose to have.
My avg. MPG is 14 city/ 15 highway. This all is for 2x4 drive!
When I use 4x4 MPG goes down to 11 MPG city (didn't test on highway).

All this was measured for a 1 person driving truck, no cargo, no towing anything, sport mode or drive with pulled parking break .... All these first 300 miles were made on the same midgrade gas. I'm also tender in acceleration pedal (rather old man drive style, highway 65 max, city 25-30).

Do you have any idea or suggestions what could be reason such poor mpg performance ?

Should I go immediately to nearest Ford service or just change gas and check again.

I appreciate your help

Martian

Well... for one, don't engage 4x4 unless you absolutely need it unless you like replacing things.

Iamraiderpower

you need to make the truck do some relearning

Ricktwuhk

Disconnect battery cables. Touch them together. Reconnect, and drive a few hundred miles letting the truck learn your driving habits. THEN see how much you're getting.

ChrisF

Are you serious ?
What MPG reset does then ?

SixShooter14

few questions...
Where are you getting these numbers? hand calculations? instant mpg from instrument panel? lifetime mpg? trip?

Are you saying Sport mode was on or off?

assuming you're saying that the parking brake was not engaged?

jamesott

What is being suggested is that the truck's computers re-learn what shift points are best for your driving style .. this may be the root cause of your low fuel efficiency.

BlackBoost

What James said.


MPG reset just resets the computer in the dash. It doesn't reset the ECU's fuel maps. You need to do what Rick suggested, and then drive normally for a while. No hard accelerations, steady and smooth driving. This will let the ECU rebuild the data.

darkrider

There are several threads on people buying used Ecoboost trucks with bad MPG... The bottom line is that you should reset adaptations by doing as stated, and check the dipstick. It's highly likely that previous owner/dealer overfilled the oil! You need to wait at least 30 minutes after shutting down the 2.7L to get an accurate oil reading. There's a TSB out on this, as many have been overfilling!

vulnox

This would cause the engine and transmission to relearn based on your driving style. Modern vehicles adapt themselves to the driving style of the owner. If you constantly full throttle way from every red light, the transmission will shift a little earlier and you will find you need less throttle in to get going.

If you are captain conservative, you will find the opposite, etc.

If the previous owner was a speed bandit, then the transmission and engine are not going to operate in the most efficient way for your driving style.

Other issues:
Winter gas sucks, you are missing a couple MPG there most likely
Your location (higher altitude is fine for boosted engine performance, but can impact MPGs)
Wind (Obviously head winds or anything but a tail wind really can have an impact. Here in MI the wind the past week has been nuts).
Outside Temp: Engines run (richer? I think) in cold weather. You get more power, but more fuel consumption. Thinner air essentially. This is part of the appeal for people of "cold air intakes".

Your City MPG doesn't seem too crazy to me, but I would think at 65 MPH you would be able to net 18-20MPG in a 4x2 even with crappy winter gas.

But basically, winter is the worst possible time to be trying to set MPG records.