this is so lame, I was expecting much better from the 4, and v6 to stay the same, how is it possible with "less" HP for it to get worse mpg.
It is very possible. Horsepower is far from the only thing that contributes to fuel efficiency. The ecoboost is turbochargered so they can not only increase the horsepower but also MPG's. The turbo can recover waste energy in the exhaust and send it back into the intake. this increases the mass of the air, and helps burn the fuel more efficiently..aka better fuel economy.
on another note...I love how all the car numbers EXCEPT the GT leaked
2015 mustang GT, Performance Pack, Recaro seats, All-weather floor mats.
VIN received: 10/16/14