[ama]

Not sure about the mushy brake pedal.......mine doesn't seem to be mushy, but this has been my primary car for almost five years, so I don't have much to compare it with except my wifes F150 and my Ford GT. Regarding the "braking" feeling below 20 mph, I think that is standard fare; I'd check to be sure the transmission reprogramming that was an unadvertised dealer recall was done. That made a world of difference on mine. I also think that the lazy six-to-seven shift is standard. If you keep your foot in it, that will happen closer to 70 mph; backing off will make it happen around 60, but it will happen slowly.
ama