Boosted16

Sounds like a great tune. The mileage with the Power.!!! What kind of price tag is on that?

rgingo

Had it done by a Ford Racing Ford dealer (about $800), however, many had it done by or signed-off by a licensed mechanic for hundreds less...some did it themselves for about $500. These are prices for when it first was released...may be cheaper now.... new 2018s have it installed stock. Other third party tuners like Livernois are also cheaper and very good. (the Ford Racing tune package also includes the air intake from the GT350, which is why it costs more).

Mustangs of Illinois

Just got my SCT X4 tuner program in today. Amazing the power difference, I mean really amazing. It only took about 15 minutes start to finish to do it. And I am getting 34.5 mpg at 73mph !

Seeqer

I have a 2017 ecoboost mustang. I have not been able to get better than 13 miles per gallon in the city and driving very conservatively. I also noticed on a very hot, 100 degree day my inside temp showed a cool 72.
Has anyone had such poor gas mileage.?

rgingo

You definitely have an abnormal problem... get it checked out at dealer under warranty ASAP. Even in traffic in city I never got that low and don't know of anyone who has. To get MPG that low you would have to be racing/very aggressive.